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One kind of other manufacturing method of an ammonium salt crystallization prevention sampling device

发布日期:2020-01-07 13:12 Document serial number: 19641810 Release date: 2020-01-07 13:12
One kind of other manufacturing method of an ammonium salt crystallization prevention sampling device

The invention relates to the technical field of sampling devices, in particular to a sampling device for removing ammonium salts and preventing crystallization.



Background technique:

Currently, due to environmental protection requirements, the exhaust emissions of cement plants must meet national standards. However, because there is a large amount of no in the cement tail gas, if you want to remove the no, you must spray a large amount of ammonia in the preheater and decomposition furnace of the cement plant, and convert the no to n2 and water through the ammonia. In this way, the discharge can reach Standard, but a large amount of ammonia will generate a large amount of crystalline ammonium salt in the system. The crystalline ammonium salt will not only corrode the pipeline of the gas analysis instrument, but also block the sampling pipeline of the gas analysis instrument, resulting in the gas analysis installed on the preheater. The meter cannot work, so we must find a way to remove the crystalline ammonium salt in the exhaust gas. For this reason, the applicant has conducted beneficial exploration and research and found a solution to the above problems. The technical solution to be introduced below is generated in this context.



Technical realization elements:

The purpose of the present invention is to provide an anti-crystallization sampling device for removing ammonium salts to prevent the crystalline ammonium salts from corroding the pipeline of the gas analysis instrument and blocking the sampling pipeline of the gas analysis instrument to ensure the normal operation of the gas analyzer.

The technical problem to be solved by the present invention can be achieved by using the following technical solutions:

An anti-crystallization sampling device for removing ammonium salts, including:

A sampling box fixedly arranged on the outer surface of the chimney;

A filtering inner cylinder disposed in the sampling box, one end of the filtering inner cylinder is closed, and the other end is open;

A sampling probe tube, one end of which passes through the sampling box and communicates with the filtering inner cylinder, and the other end of which extends into the chimney flue for collecting sample gas in the chimney flue;

A filtering structure provided in the other end of the filtering inner cylinder and sealingly matched with an inner cylinder surface of the other end of the filtering inner cylinder, the filtering structure having a filtering outlet therein;

A decrystallizing tank installed on the sampling box and located outside the sampling box, the decrystallizing tank has a same gas inlet, a same gas outlet, and a drainage port. The filtering outlet of the filtering structure is connected, the sample gas outlet is connected to an external pumping mechanism, and the decrystallizing tank is filled with an ammonium salt absorption ball; and

A heating mechanism installed in the sampling box for heating the collected sample gas.

In a preferred embodiment of the present invention, the sampling box body is enclosed by a front box plate, a rear box plate, an upper box plate, a lower box plate, a left box plate, and a right box plate, wherein the front box plate , The rear box plate, the lower box plate and the left box plate are connected to each other to form a whole, the upper box plate and the right box plate are connected to each other to form a whole, and the left edge of the upper box plate is connected to the left side by a plurality of hinges. The upper side edge of the box plate is hinged, and the lower side edge of the right box plate and the right side edge of the lower box plate are detachably connected through a box buckle structure.

In a preferred embodiment of the present invention, the box buckle structure includes:

A box buckle fixedly installed on a lower plate surface of the lower box plate near the right box plate; and

A box buckle fixedly installed on a right plate surface of the right box board near the lower box board and cooperating with the box buckle hook.

In a preferred embodiment of the present invention, the filtering structure includes:

A filter element support body is provided in the other end of the filter inner cylinder body and sealingly cooperates with the inner cylinder surface of the other end of the filter inner cylinder body. A filter through hole is provided at the center of the filter element support body. An outer port of the filtering through hole as a filtering outlet of the filtering structure; and

A filter element installed on the filter element support body and located in the filter inner cylinder, a filter port of the filter element is in communication with a filter through hole of the filter element support body.

In a preferred embodiment of the present invention, the filter element is a metal powder element.

In a preferred embodiment of the present invention, an outer cylinder is further included, and one end of the outer cylinder is fixedly installed on the left plate surface of the left box plate of the sampling box through an outer cylinder mounting flange. The other end is inserted into a pre-installed mounting hole on the outside surface of the chimney, so that the sampling box is fixedly disposed on the outside surface of the chimney, and one end of the sampling probe tube passes through the outer cylinder through the The left box plate enters the sampling box body.

In a preferred embodiment of the present invention, one end of the filtering inner cylinder is fixedly installed on the right plate surface of the left box plate of the sampling box and connected to the outer cylinder through a filtering inner cylinder mounting flange. The body is disposed correspondingly, so that one end of the filtering inner cylinder is closed, and one end of the sampling probe tube passes through the left box plate of the sampling box and communicates with the filtering inner cylinder.

In a preferred embodiment of the present invention, the decrystallizing tank includes:

A decrystallized tank sealing head is fixedly installed on the lower box plate of the sampling box body, an upper part thereof enters the sampling box body, and a lower part thereof is outside the sampling box body. An axially extending gas transmission channel is formed in the decrystallized tank seal head, and an upper end of the decrystallized tank seal head is formed with the sample gas inlet communicating with the gas transmission channel;

A decrystallizing tank body part, an upper end of the decrystallizing tank body part is detachably connected to a lower end of the decrystallizing tank head, and the inside of the decrystallizing tank body is connected with the decrystallizing pot seal. The lower end of the gas transmission channel of the head communicates, the sample gas outlet is opened on the lower side wall of the decrystallizing tank body portion, and the drainage opening is opened on the bottom, and the ammonium salt absorption ball is filled in the The inside of the tank body of the decrystallizing tank is described.

In a preferred embodiment of the present invention, the sample gas inlet on the head of the decrystallizing tank seal is connected to the filter outlet of the filter structure through a bent joint.

The working process of the ammonium salt removal and anti-crystallization sampling device of the present invention is as follows:

The sample gas in the chimney's flue enters the filter inner cylinder through the sampling probe tube, and the heating mechanism heats the filter inner cylinder so that the temperature of the sample gas after passing through the filter inner cylinder rises to above 180 ° C; then, the heating After the sample gas passes through the filtering structure, it enters the decrystallizing tank. The filtering structure can filter the dust, soot and other particulates in the sample gas. Because the space in the decrystallizing tank is very large and filled with Sample gas retention time and ammonium salt absorption ball that adsorbs ammonium salt. The sample gas must be drawn out from the sample gas outlet of the decrystallizing tank. It must be blocked by a large number of ammonium salt absorption balls. During this process, it will stay longer. Time, during the staying process, the temperature of the sample gas decreases rapidly. Due to the decrease in temperature, a large amount of ammonium salt will crystallize and adhere to the surface of the ammonium salt absorption ball, so that a large amount of ammonium salt can be removed from the sample. The gas is stripped out, and the clean sample gas after removing the ammonium salt is sent to the gas analyzer for analysis processing through the sample gas outlet of the decrystallizing tank. The crystallized ammonium salt is discharged through the drain of the decrystallizing tank.

Since the above technical solution is adopted, the present invention has the beneficial effect that the present invention effectively removes the ammonium salt in the sample gas, and effectively prevents the crystalline ammonium salt from corroding the pipeline of the gas analysis instrument and blocking the sampling pipeline of the gas analysis instrument. Ensure that the gas analyzer is working properly.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 is a schematic structural diagram of the present invention.

detailed description

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further described below with reference to specific drawings.

Referring to FIG. 1, the figure shows a sampling device for anti-ammonium salt removal, including a sampling box 100, a filtering inner cylinder 200, an outer cylinder 300, a sampling probe 400, a filtering structure 500, and a decrystallizing tank 600. And a heating mechanism (not shown).

The sampling box 100 is fixed on the outer surface of the chimney, and is surrounded by a front box 110, a rear box 120, an upper box 130, a lower box 140, a left box 150, and a right box 160, wherein The front case plate 110, the rear case plate 120, the lower case plate 140, and the left case plate 150 are connected to each other to form a whole, and the upper case plate 130 and the right case plate 160 are connected to each other to form a whole and serve as a box cover of the sampling box 100. The left edge of the upper box plate 130 is hinged to the upper side edge of the left box plate 150 through a plurality of hinges 170, and the lower edge of the right box plate 160 and the right edge of the lower box plate 140 are connected by a box buckle structure 180. Removable connection. The box buckle structure 180 includes a matching box buckle hook 181 and a box buckle 182. The box buckle hook 181 is fixedly installed on the lower plate surface of the lower box plate 140 near the right box plate 160, and the box buckle 182 is fixedly installed on the right box plate 160. The right plate surface is near the lower box plate 140. When the sampling box 100 needs to be opened, the lock between the right box plate 160 and the lower box plate 140 is released by turning the box buckle 182, and the box cover composed of the upper box plate 130 and the right box plate 160 can be turned upwards, Open the sampling box 100.

The filtering inner cylinder 200 is disposed in the sampling box 100. Specifically, one end of the filter inner cylinder 200 is fixedly installed on the right plate surface of the left box plate 150 of the sampling tank 100 through the filter inner cylinder mounting flange 210 so that the end portion of the filter inner cylinder 200 forms a seal. Its other end is open.

One end of the outer cylinder 300 is fixedly installed on the left surface of the left box plate 150 of the sampling box 100 through the outer cylinder mounting flange 310, and the other end is inserted into a pre-installed mounting hole on the outside surface of the chimney to make the sampling box The body 100 is fixedly disposed on the outer surface of the chimney. The outer cylinder 300 and the filtering inner cylinder 200 are disposed correspondingly.

One end of the sampling probe 400 extends into the outer cylinder 300 and passes through the left case 150 of the sampling box 100 and communicates with the filtering inner cylinder 200. The other end extends into the chimney flue for collecting smoke from the chimney. Sample gas in the Tao.

The filtering structure 500 is disposed in the other end of the filtering inner cylinder 200 and sealingly cooperates with the inner cylinder surface of the other end of the filtering inner cylinder 200. Specifically, the filter structure 500 includes a filter element support body 510 and a filter element 520. The filter element support body 510 is disposed in the other end of the filter inner cylinder 200 and sealingly cooperates with the inner cylinder surface of the other end of the filter inner cylinder 200. The filter element supports A filter through hole 511 is set at the center of the body 510, and an outer port of the filter through hole 511 is used as a filter outlet of the filter structure 500. The filter element 520 is installed on the filter element support body 510 and is located in the inner filter cylinder 200. The filter port of the filter element 520 is in communication with the filter through hole 511 of the filter element support 510. In this embodiment, the filter element 520 is a metal powder element.

The decrystallizing tank 600 is installed on the sampling box 100 and located outside the sampling box 100. Specifically, the decrystallizing tank 600 includes a decrystallizing tank sealing head 610 and a decrystallizing tank body 620. The decrystallizing tank sealing head 610 is fixedly installed on the lower box plate 140 of the sampling box 100, and the upper part thereof enters the sampling box 100, and the lower part is outside the sampling box 100. There is an axially extending gas transmission channel 611, and a sample gas inlet 601 communicating with the gas transmission channel 611 is formed at the upper end of the decrystallizing tank sealing head 610. The sample gas inlet 601 on the decrystallizing tank sealing head 610 is connected to the filtering outlet of the filtering structure 500 through a bent joint 630. The upper end of the decrystallizing tank body portion 620 is detachably connected to the lower end of the decrystallizing tank head portion 610, and the inside of the decrystallizing tank body portion 620 is in communication with the lower end of the gas transmission channel 611 of the decrystallizing tank head portion 610. A sample gas outlet 602 connected to an external pumping mechanism is provided on the lower side wall of the decrystallizer tank body portion 620, and a drain port 603 for discharging crystalline ammonium salt is provided on the bottom of the decrystallizer tank body portion 620. Filled with ammonium salt absorbing balls 630.

The heating mechanism is installed in the sampling box 100 and is mainly used to heat the collected sample gas. In this embodiment, the heating mechanism may use a heating wire for heating, and the heating wire may be coated on the outer cylinder surface of the filtering inner cylinder 200 and the outer periphery of the portion of the decrystallizing tank sealing head 610 located in the sampling box 100 On the surface, the sample gas is heated to prevent the sample gas from crystallizing in the filtering inner cylinder 200 and the decrystallizing tank head 610.

The working process of the ammonium salt removal and anti-crystallization sampling device of the present invention is as follows:

The sample gas in the flue of the chimney enters the filtering inner cylinder 200 through the sampling probe 400, and the heating mechanism heats the filtering inner cylinder 200 so that the temperature of the sample gas after passing through the filtering inner cylinder 200 rises to above 180 ° C. Then, the heated sample gas passes through the filtering structure 500 and enters the decrystallizing tank 600. The filtering structure 500 can filter the particulates such as dust, smoke and so on in the sample gas. It is full of ammonium salt absorption balls 630 for increasing the residence time of the sample gas and adsorbing the ammonium salt. The sample gas is to be extracted from the sample gas outlet 602 of the decrystallizing tank 600, and it must be blocked by a large number of ammonium salt absorption balls 630. During this process, it will stay for a long time. During the staying process, the temperature of the sample gas will decrease rapidly. Due to the decrease in temperature, a large amount of ammonium salt will crystallize and adhere to the surface of the ammonium salt absorption ball 630. In this way, a large amount of ammonium salt can be stripped from the sample gas, and the clean sample gas after removing the ammonium salt is then sent to the gas analyzer for analysis by the sample gas outlet 602 of the decrystallizing tank 600. The crystallized ammonium salt passes through The drain port 603 of the decrystallizing tank 600 is discharged. The ammonium salt in the sample gas is effectively removed, and the crystalline ammonium salt is effectively prevented from corroding the pipeline of the gas analysis instrument and the sampling pipeline of the gas analysis instrument is blocked to ensure the normal operation of the gas analyzer.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the foregoing embodiments. What is described in the above embodiments and the description is only to explain the principle of the present invention. The present invention will also have the following without departing from the spirit and scope of the present invention. Various changes and improvements fall within the scope of the claimed invention. The scope of protection of the invention is defined by the appended claims and their equivalents.

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