CN211784606U - Extraction formula coal chemical industry coal gas flue gas concentration on-line monitoring device - Google Patents
Extraction formula coal chemical industry coal gas flue gas concentration on-line monitoring device Download PDFInfo
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- CN211784606U CN211784606U CN202020347525.3U CN202020347525U CN211784606U CN 211784606 U CN211784606 U CN 211784606U CN 202020347525 U CN202020347525 U CN 202020347525U CN 211784606 U CN211784606 U CN 211784606U
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Abstract
The utility model discloses an extraction type coal chemical industry gas flue gas concentration on-line monitoring device, which relates to the technical field of flue gas detection, and comprises a flue gas sampling device, a flue gas pretreatment device, a flue gas analysis device and a data acquisition and transmission device; the flue gas sampling device is used for being connected with a flue gas outlet of the gasification furnace so as to collect flue gas sample gas; the flue gas pretreatment device is connected with the flue gas sampling device and is used for pretreating the sample gas collected by the flue gas sampling device; the flue gas analysis device is connected with the flue gas pretreatment device and is used for analyzing the concentration of sample gas components pretreated by the flue gas pretreatment device; the data acquisition and transmission device is connected with the gasifier control system and the flue gas analysis device and is used for processing the acquired flue gas analysis result and transmitting the processed flue gas analysis result to the gasifier control system. The beneficial effects of the utility model can be in real time and accurately analyze the concentration of flue gas composition, and have great significance to guide gasifier production control.
Description
Technical Field
The utility model relates to a smoke detection technical device field, concretely relates to extraction formula coal chemical industry coal gas flue gas concentration on-line monitoring device.
Background
The coal chemical industry is a process of using coal as a raw material, converting the coal into gas, liquid and solid products or semi-products through chemical processing, and then further processing the products into chemical and energy products. The gasification of coal plays an important role in coal chemical industry, is used for producing various gas fuels, is clean energy, and is beneficial to improving the living standard of people and protecting the environment; the synthesis gas produced by coal gasification is a raw material for synthesizing various products such as liquid fuel, chemical raw materials and the like.
The coal gasification principle is as follows: coal gasification refers to a series of chemical reactions between organic matters in coal and gasifying agents (such as steam/air or oxygen) at a certain temperature and pressure in specific equipment to convert solid coal into coal containing CO and H2、 CH4Isocombustible gas and CO2、N2And the like. The reactions that occur in the gasification process include pyrolysis, gasification, and combustion reactions of coal. Pyrolysis of coal refers to the process by which coal changes from a solid phase to a gas, solid, liquid three-phase product. The gasification and combustion reactions of coal then include two reaction types, namely heterogeneous gas-solid reactions and homogeneous gas-phase reactions. When coal is gasified, three conditions, namely a gasification furnace, a gasification agent and heat supply, are required, and one of the three conditions is not necessary. The gasification furnace is the most critical equipment in the coal chemical industry, and most coal chemical engineering projects need to go through the link that coal is converted into synthesis gas through the gasification furnace.
The production process of the gasification furnace comprises the following steps: the raw material coal is crushed and sent to a coal mill by a transportation facility, and the raw material is put in the coal millThe coal is ground into coal powder (90 percent)<100 μm) and dried, the pulverized coal is often pressed into a pulverized coal bunker, a pressurized pulverized coal bunker and a feeding bunker, and the pulverized coal is sent to a coal burner of a gasification furnace by high-pressure nitrogen or carbon dioxide gas. High-pressure oxygen from air separation is preheated, mixed with medium-pressure superheated steam and then introduced into a coal burner. The coal powder, oxygen and steam are subjected to oxidation of carbon and various conversion reactions under the high-temperature pressurizing condition of the gasification furnace. High-temperature coal gas at about 1500 ℃ at the top of the gasification furnace is chilled to about 900 ℃ by cold coal gas after dedusting and cooling, and then enters a synthesis gas cooler. The coal gas with the heat recovered by the synthesis gas cooler and the high-pressure and medium-pressure saturated steam or superheated steam as a byproduct enters a dry dust removal and wet washing system, and the dust content in the treated coal gas is less than 1mg/m3And (5) sending the mixture to the subsequent process.
The composition (volume%) of the gas generated at the outlet of the gasification furnace was about: 27-33 parts of hydrogen, 40-48 parts of carbon monoxide, 4-8 parts of carbon dioxide, 8-10 parts of methane and 2 parts of other gases can be used as urban gas and synthesis gas after processing treatment, and because a large amount of inflammable and explosive gases are contained, the analysis and measurement of the gas contents such as the oxygen content of outlet flue gas, the carbon monoxide content and the like are of great significance and important significance for guiding the production control of the pneumatic furnace in the production process.
Because the gasification furnace is a furnace type adopting a pressurized gasification technology, the gasification strength is high, the pressure of outlet gas is high, generally 4 Mpa-7 Mpa, the temperature is high, generally 600-1000 ℃; the dust amount is large, a large amount of tar components are contained, the smoke condition is complex, and no equipment for real-time online monitoring of the smoke at the outlet of the gasification furnace in the coal chemical industry exists at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide an extraction formula coal chemical industry coal gas flue gas concentration on-line monitoring device to real-time supervision gasifier export flue gas composition and concentration have great, important meaning to guiding gasifier production control.
The technical solution of the utility model is as follows:
an extraction type coal chemical industry gas flue gas concentration online monitoring device comprises a flue gas sampling device, a flue gas pretreatment device, a flue gas analysis device and a data acquisition and transmission device;
the flue gas sampling device is used for being connected with a flue gas outlet of the gasification furnace so as to collect flue gas sample gas;
the flue gas pretreatment device is connected with the flue gas sampling device and is used for pretreating the sample gas collected by the flue gas sampling device;
the flue gas analysis device is connected with the flue gas pretreatment device and is used for analyzing the concentration of the sample gas components pretreated by the flue gas pretreatment device;
the data acquisition and transmission device is connected with the gasifier control system and the flue gas analysis device and is used for acquiring the analysis result of the flue gas pretreatment device and transmitting the acquired analysis result to the gasifier control system after processing.
As a preferred technical scheme, the flue gas pretreatment device comprises a pressure reducing device, a tar removing device, a dust removing device, a filtering device, a flow limiting device and a water removing device which are sequentially connected, wherein the air inlet of the pressure reducing device is connected with the flue gas sampling device, and the air outlet of the water removing device is connected with the flue gas analyzing device.
As preferred technical scheme, the tar removing device includes the tar removing tank, sample gas import, tar dissolving agent import, steam inlet, waste liquid export and sample gas export have on the tar removing tank, tar dissolving agent import, steam inlet set up respectively the upper portion of tar removing tank, the waste liquid export sets up the bottom of tar removing tank, the setting of sample gas import is in tar dissolving agent import with the below of steam inlet.
As the preferred technical scheme, dust collector includes the dust removal jar, sample gas import, steam inlet, waste liquid export and sample gas export have on the dust removal jar, steam inlet, sample gas export all set up the top of sample gas import.
As a preferred technical scheme, the water removal device comprises three condensing devices which are connected in sequence, wherein the first condensing device and the second condensing device are straight pipe condensing devices, and the third condensing device is a spiral pipe condensing device.
As a preferred technical scheme, the decoking oil tank is also provided with a liquid level sensor for monitoring the liquid level in the decoking oil tank, the decoking oil tank is respectively provided with a second cut-off valve, a third cut-off valve and a fourth cut-off valve for controlling the on-off of a tar dissolving agent inlet, a steam inlet and a waste liquid outlet, and the liquid level sensor is in linkage connection with the second cut-off valve, the third cut-off valve and the fourth cut-off valve; still be provided with the fifth trip valve that is used for controlling waste liquid outlet break-make on the dust removal tank, level sensor with the linkage of fifth trip valve is connected.
As a preferred technical scheme, a sixth cut-off valve used for controlling the on-off of the pipeline is arranged between the dust removal device and the filtering device, and the liquid level sensor is in linkage connection with the sixth cut-off valve.
As a preferred technical scheme, the flue gas sampling device comprises a sampling pipeline and a first cut-off valve used for controlling the cut-off of the sampling pipeline, wherein the gas inlet of the sampling pipeline is connected with the flue gas outlet of the gasification furnace, the gas outlet of the sampling pipeline is connected with the pressure reducing device, and the liquid level sensor is in linkage connection with the first cut-off valve.
An extraction type coal chemical industry gas flue gas concentration online monitoring method comprises the following steps:
s1, opening the flue gas sampling device, and enabling sample gas to enter the flue gas sampling device from a flue gas outlet on the gasification furnace;
s2, enabling the sample gas to enter a flue gas pretreatment device from the flue gas sampling device, depressurizing the sample gas through the flue gas pretreatment device, and removing tar, dust impurities and moisture in the sample gas;
s3, enabling the sample gas processed in the step S2 to enter a flue gas analysis device, and analyzing the concentration of the components of the sample gas through the flue gas analysis device to obtain concentration data of the components of the sample gas;
and S4, acquiring the concentration data of the sample gas components in the step S3 through a data acquisition and transmission device, processing the concentration data of the sample gas components and transmitting the processed concentration data to a gasification furnace control system.
As a preferred technical solution, the step S2 specifically includes: the sample gas is firstly reduced to 0.2-1.0Mpa by a pressure reducing device; then the gas enters a tar removing device, a tar dissolving agent is filled in the tar removing device, and the tar in the sample gas is removed through the tar dissolving agent; the sample gas treated by the tar removing device enters a dust removing device to remove dust in the sample gas; the sample gas treated by the dust removal device enters a filtering device, the filtering precision of the filtering device is 0.5-2.5 mu m, and dust impurities are removed; the sample gas treated by the filtering device enters a flow limiting device, so that the pressure and the flow rate of the sample gas are further reduced; and the sample gas treated by the flow limiting device sequentially enters three condensing devices, wherein the first condensing device and the second condensing device are straight pipe condensing devices, the sample gas is cooled to 5-10 ℃, and the third condensing device is a spiral pipe condensing device and continuously cools the sample gas to 1-2 ℃.
The utility model has the advantages that: the utility model discloses flue gas sampling device of innovation takes a sample to the flue gas that comes out from the gasifier, with sample gas through pretreatment such as flue gas pretreatment device's step-down, dust removal, remove tar, dewatering, reduce impurity composition in the sample gas to flue gas analysis device's influence, carry out the concentration analysis of sample gas composition in real time among the clean dry sample gas gets into flue gas analysis device, transmit the concentration of the sample gas composition who will record to gasifier control system through data acquisition transmission device at last, the utility model discloses its can be in real time and accurately analyze the concentration value that obtains flue gas composition, specifically as O2And the concentrations of CO and the like, which has great significance for guiding the production control of the gasification furnace, and fills the blank of real-time monitoring of the flue gas at the outlet of the gasification furnace in the coal chemical industry.
Drawings
FIG. 1 is a schematic block diagram of the system principle of the preferred embodiment of the present invention;
FIG. 2 is a schematic view of a part of the structure of the preferred embodiment of the present invention;
reference numerals: 1. a flue gas sampling device; 11. a first manual shut-off valve; 12. a first pneumatic shut-off valve; 2. a flue gas pretreatment device; 21. a pressure reducing valve 22 and a tar removing tank; 221. a liquid level sensor; 222. a second shut-off valve; 223. a third shut-off valve; 224. a fourth shut-off valve; 23. a dust removal tank; 231. a fifth cut-off valve; 24. a first filter; 25. a current limiter; 26. a condensing unit; 27. a second filter; 28. a sixth cut-off valve; 3. a flue gas analysis device; 31. a flue gas analyzer; 32. a flow meter; 4. a data acquisition and transmission device; 5. a gasification furnace; 6. a gasifier control system.
Detailed Description
The present invention will be described in further detail with reference to the following specific examples, but the present invention is not limited to the following specific examples.
Example 1
As shown in fig. 1 and 2, the embodiment provides an extraction type coal chemical industry gas flue gas concentration online monitoring device, which includes a flue gas sampling device 1, a flue gas pretreatment device 2, a flue gas analysis device 3, and a data acquisition and transmission device 4;
the flue gas sampling device 1 is used for being connected with a flue gas outlet of the gasification furnace 5 so as to collect flue gas sample gas; in the embodiment, the flue gas sampling device 1 comprises a sampling pipeline and a first cut-off valve for controlling the cut-off of the sampling pipeline, wherein the gas inlet of the sampling pipeline is connected with the flue gas outlet of the gasification furnace 5, the gas outlet of the sampling pipeline is connected with the flue gas pretreatment device 2, and the first cut-off valve comprises a first manual cut-off valve 11 and a first pneumatic cut-off valve 12; the pressure of flue gas in the flue gas outlet pipeline of gasifier 5 is very big, and is 4-7Mpa generally, welds the sampling pipeline behind the flue gas outlet pipeline of gasifier 5, and in the flue gas meeting automatic flow direction sampling pipeline in the gasifier 5, adopts manual valve and automatic valve duplicate protection, can turn off the pipeline fast, prevents the impact of high-pressure flue gas to follow-up equipment.
The flue gas pretreatment device 2 is connected with the flue gas sampling device 1 and is used for pretreating the sample gas collected by the flue gas sampling device 1; in this embodiment, the flue gas pretreatment device 2 includes a pressure reduction device, a tar removal device, a dust removal device, a filtering device, a flow limiting device, and a water removal device, which are connected in sequence; specifically, in the embodiment, the pressure reducing device comprises a pressure reducing valve 21, an air inlet of the pressure reducing valve 21 is connected with a sampling pipeline of the flue gas sampling device 1 and is used for reducing the pressure of the sample gas from 6.5Mpa to 0.2-1.0Mpa, the pressure reducing valve 21 can resist the high temperature of 600 ℃ and the high pressure of 4-7Mpa, and the drift diameter is DN50-DN250, so that the sample gas can smoothly pass through the pipeline and the valve; the decoking oil device comprises a decoking oil tank 22, an air inlet pipe of the decoking oil tank 22 is connected with a pressure reducing valve 21, the decoking oil tank 22 is provided with a sample gas inlet, a tar dissolving agent inlet, a steam inlet, a waste liquid outlet and a sample gas outlet, the tar dissolving agent inlet and the steam inlet are respectively arranged at the upper part of the decoking oil tank 22, the waste liquid outlet is arranged at the bottom of the decoking oil tank 22, the sample gas inlet is arranged below the tar dissolving agent inlet and the steam inlet, and the sample gas outlet is arranged above the sample gas inlet; the dust removal device comprises a dust removal tank 23, an air inlet pipe of the dust removal tank 23 is connected with the decoking oil tank 22, the dust removal tank 23 is provided with a sample gas inlet, a steam inlet, a waste liquid outlet and a sample gas outlet, and the steam inlet and the sample gas outlet are both arranged above the sample gas inlet; the filtering device comprises a first filter 24, the filtering precision of the first filter 24 is 0.5-2.5 mu m, the pressure resistance is less than 5Mpa, and most of dust impurities and the like which are not removed by the dust removing tank 23 can be removed after the sample gas passes through the first filter 24; the flow limiting device comprises a flow restrictor 25, and the pressure and the flow rate of the sample gas are further reduced through the flow restrictor 25, so that the sample gas can be introduced into the analysis device; the water removal device comprises a condensation device 26, the condensation device 26 is a three-way condensation device connected in sequence in the embodiment, the first-way condensation device and the second-way condensation device are straight pipe condensation devices and can instantly cool the high-temperature sample gas to 5-10 ℃, a large part of water is discharged after condensation of the two-way condensation device, the third-way condensation device is a spiral pipeline condensation device and is used for continuously cooling the condensation gas in the first two ways to 1-2 ℃, residual water in the gas is condensed and discharged in the way, and the dew point of the sample gas passing through the condensation device 26 is 2-7 ℃, so that 99.99% of water can be removed.
The flue gas analysis device 3 is connected with the flue gas pretreatment device 2 and is used for analyzing the concentration of sample gas components pretreated by the flue gas pretreatment device 2; in this embodiment, the flue gas analyzer 3 includes a flue gas analyzer 31, and the flue gas analyzer 31 employs an analyzer based on an oxygen paramagnetic principle and an infrared absorption principle.
The data acquisition and transmission device 4 is connected with the gasifier control system 6 and the flue gas analysis device 3, and is used for acquiring the concentration value of the sample gas component obtained by analyzing the flue gas pretreatment device 2, and transmitting the acquired concentration value of the sample gas component to the gasifier control system 6 after being processed for operation reference of production control personnel.
As a preferred technical solution of the present embodiment, it may further have the following technical features:
the decoking oil tank 22 is also provided with a liquid level sensor 221 for monitoring the liquid level in the decoking oil tank 22, the decoking oil tank 22 is respectively provided with a second cut-off valve 222, a third cut-off valve 223 and a fourth cut-off valve 224 for controlling the make-and-break of a tar dissolving agent inlet, a steam inlet and a waste liquid outlet, and the liquid level sensor 221 is in linkage connection with the second cut-off valve 222, the third cut-off valve 223 and the fourth cut-off valve 224; still be provided with the fifth trip valve 231 that is used for controlling the waste liquid export break-make on the dust removal tank 23, level sensor 221 is connected with the linkage of fifth trip valve 231, is convenient for monitor the liquid level in the decoking oil jar 22 to be convenient for take a sample and the blowback according to the liquid level. A sixth cut-off valve 28 for controlling the on-off of the pipeline is arranged between the dust removing tank 23 and the first filter 24, and the liquid level sensor 221 is in linkage connection with the sixth cut-off valve 28, so that the on-off control is convenient. The liquid level sensor 221 is linked with the first manual cut-off valve 11 and the first pneumatic cut-off valve 12. In the back flushing process in the embodiment, after the liquid level in the decoking oil tank 22 is monitored by the liquid level sensor 221 to reach a set value, the fourth cut-off valve 224 at the bottom of the decoking oil tank 22, the fifth cut-off valve 231 at the bottom of the dust removing tank 23 and the third cut-off valve 223 for high-temperature steam at the top are opened in a linkage manner, the first pneumatic cut-off valve 12 and the eighth cut-off valve 28 are closed, and waste liquid in the decoking oil tank 22 and the dust removing tank 23 is discharged; after reaching the empty discharge position, the liquid level sensor 221 closes the tank bottom fourth cut-off valve 224, the fifth cut-off valve 231, and the top high-temperature steam third cut-off valve 223 in an interlocking manner, and opens the upper second cut-off valve 222 to allow the decoking oil dissolving agent to enter the decoking oil tank 22 and the dust removal tank 23. After the liquid level sensor 221 monitors that the solution in the decoking oil tank 22 reaches the set liquid level, the second cut-off valve 22 is closed in a linkage manner, and the first pneumatic cut-off valve 12 and the eighth cut-off valve 28 are opened on the main air path, so that the online monitoring device in the embodiment is in a sampling working state.
The flue gas pretreatment device 2 further comprises a second filter 27, an air inlet of the second filter 27 is connected with the condensing device 26, and an air outlet of the second filter 27 is connected with the flue gas analysis device 3, so as to further remove dust in the sample gas and reduce the influence of the dust on the test result of the flue gas analysis device 3.
The flue gas analysis device 3 further comprises a flow meter 32, an air inlet of the flow meter 32 is connected with the second filter 27, and an air outlet of the flow meter 32 is connected with the flue gas analyzer 31, so as to measure the flow of the sample gas entering the flue gas analyzer 31 and avoid damaging the flue gas analyzer 31.
This embodiment is through adopting flue gas sampling device to take a sample to the flue gas that comes out from the gasifier, with sample gas through pretreatment such as flue gas pretreatment device's step-down, remove the dust, remove tar, dewatering after, reduce impurity composition in the sample gas to flue gas analysis device's influence, carry out the concentration analysis of sample gas composition in real time among the clean dry sample gas entering flue gas analysis device, transmit to gasifier control system after handling through the concentration of sample gas composition that data acquisition transmission device will record at last, the utility model discloses its concentration value that can real-time and accurately analyze and obtain flue gas composition, this has great, important meaning to guiding gasifier production control to gasifier export flue gas real-time supervision's blank in the coal chemical industry has been filled. Meanwhile, the embodiment effectively removes tar, a large amount of dust components similar to mud, moisture and the like in the flue gas sample gas by adopting the flue gas pretreatment device, and reduces the influence of other components in the sample gas on the analysis result.
Example 2
The embodiment provides an extraction type coal chemical industry gas flue gas concentration online monitoring method, which comprises the following steps:
s1, opening the flue gas sampling device 1, and enabling sample gas to enter the flue gas sampling device 1 from a flue gas outlet on the gasification furnace 5;
s2, enabling the sample gas to enter a flue gas pretreatment device 2 from the flue gas sampling device 1, reducing the pressure of the sample gas through the flue gas pretreatment device 2, and removing tar, dust impurities, water and the like in the sample gas; the method specifically comprises the following steps: the sample gas passes through a pressure reducing valve 21 to reduce the pressure of the sample gas to 0.2-1.0 Mpa; then the gas enters a tar removing tank 22, a tar dissolving agent is filled in the tar removing device, and the tar in the sample gas is removed through the tar dissolving agent; the sample gas treated by the decoking oil tank 22 enters a dust removal tank 23 to remove dust in the sample gas; the sample gas treated by the dust removing tank 23 enters a first filter 24, the filtering precision of the first filter 24 is 0.5-2.5 mu m, and dust impurities are removed; the sample gas treated by the first filter 24 enters a flow restrictor 25 to further reduce the pressure and flow rate of the sample gas; the sample gas treated by the flow restrictor 25 sequentially enters three condensing devices 26, wherein the first condensing device and the second condensing device are straight pipe condensing devices, the sample gas is cooled to 5-10 ℃, the third condensing device is a spiral pipe condensing device, and the sample gas is continuously cooled to 1-2 ℃.
S3, the sample gas processed in the step S2 enters the smoke analyzer 31, and the concentration of the components of the sample gas is analyzed by the smoke analyzer 31 to obtain the concentration data of the components of the sample gas;
and S4, acquiring the concentration data of the sample gas component in the step S3 through the data acquisition and transmission device 4, processing the concentration data of the sample gas component and transmitting the processed concentration data to the gasification furnace control system 6.
The method further comprises a back flushing process, specifically, after the liquid level in the decoking oil tank 22 is monitored by a liquid level sensor 221 to reach a set value, a fourth cut-off valve 224 at the bottom of the decoking oil tank 22, a fifth cut-off valve 231 at the bottom of the dust removing tank 23 and a third cut-off valve 223 for high-temperature steam at the top are opened in a linkage manner, the first pneumatic cut-off valve 12 and the eighth cut-off valve 28 are closed, tar and impurities in the tar tank 22 and the dust removing tank 23 are further removed by using the high-temperature steam, and then waste liquid in the decoking oil tank 22 and the dust removing tank 23; after the waste liquid in the tar removing tank 22 and the dust removing tank 23 reaches the discharge vacancy, the liquid level sensor 221 closes the fourth cut-off valve 224 at the bottom of the tank, the fifth cut-off valve 231 and the third cut-off valve 223 for high-temperature steam at the top in a linkage manner, and simultaneously opens the second cut-off valve 222 at the upper part, so that the tar removing dissolving agent enters the tar removing tank 22 and the dust removing tank 23, and when the tar removing dissolving agent in the tar removing tank 22 and the dust removing tank 23 reaches a liquid level set value, the online monitoring device can be opened for sampling analysis.
The above are merely examples of the features of the present invention, and do not limit the scope of the present invention. All technical solutions formed by adopting equivalent exchanges or equivalent replacements fall within the protection scope of the present invention.
Claims (8)
1. An extraction type coal chemical industry gas flue gas concentration online monitoring device is characterized by comprising a flue gas sampling device (1), a flue gas pretreatment device (2), a flue gas analysis device (3) and a data acquisition and transmission device (4);
the flue gas sampling device (1) is used for being connected with a flue gas outlet of the gasification furnace (5) to collect flue gas sample gas;
the flue gas pretreatment device (2) is connected with the flue gas sampling device (1) and is used for pretreating sample gas collected by the flue gas sampling device (1);
the flue gas analysis device (3) is connected with the flue gas pretreatment device (2) and is used for analyzing the concentration of the sample gas components pretreated by the flue gas pretreatment device (2);
the data acquisition and transmission device (4) is connected with the gasification furnace control system (6) and the flue gas analysis device (3) and is used for acquiring the analysis result of the flue gas pretreatment device (2) and transmitting the acquired analysis result to the gasification furnace control system (6) after processing.
2. The extraction type coal chemical industry gas flue gas concentration online monitoring device as claimed in claim 1, wherein the flue gas pretreatment device (2) comprises a pressure reduction device, a tar removal device, a dust removal device, a filtering device, a flow limiting device and a water removal device which are connected in sequence, wherein an air inlet of the pressure reduction device is connected with the flue gas sampling device (1), and an air outlet of the water removal device is connected with the flue gas analysis device (3).
3. The extraction type coal chemical industry gas flue gas concentration online monitoring device according to claim 2, wherein the tar removing device comprises a tar removing tank (22), the tar removing tank (22) is provided with a sample gas inlet, a tar dissolving agent inlet, a steam inlet, a waste liquid outlet and a sample gas outlet, the tar dissolving agent inlet and the steam inlet are respectively arranged on the upper part of the tar removing tank (22), the waste liquid outlet is arranged at the bottom of the tar removing tank (22), and the sample gas inlet is arranged below the tar dissolving agent inlet and the steam inlet.
4. The extraction type coal chemical industry gas flue gas concentration online monitoring device according to claim 2, wherein the dust removal device comprises a dust removal tank (23), the dust removal tank (23) is provided with a sample gas inlet, a steam inlet, a waste liquid outlet and a sample gas outlet, and the steam inlet and the sample gas outlet are both arranged above the sample gas inlet.
5. The extraction type coal chemical industry gas flue gas concentration online monitoring device as claimed in claim 2, wherein the water removal device comprises three condensing devices (26) connected in sequence, the first condensing device and the second condensing device are straight pipe condensing devices, and the third condensing device is a spiral pipeline device.
6. The extraction type coal chemical industry gas flue gas concentration online monitoring device according to claim 4, wherein a liquid level sensor (221) for monitoring the liquid level in the decoking oil tank (22) is further arranged on the decoking oil tank (22), a second cut-off valve (222), a third cut-off valve (223) and a fourth cut-off valve (224) for controlling the on-off of a tar dissolving agent inlet, a steam inlet and a waste liquid outlet are respectively arranged on the decoking oil tank (22), and the liquid level sensor (221) is in linkage connection with the second cut-off valve (222), the third cut-off valve (223) and the fourth cut-off valve (224); still be provided with fifth trip valve (231) that are used for controlling waste liquid outlet break-make on dust removal tank (23), level sensor (221) with fifth trip valve (231) linkage is connected.
7. The extraction type coal chemical industry gas flue gas concentration online monitoring device of claim 6, characterized in that: the dust collector with be provided with between the filter equipment and be used for controlling the sixth trip valve (28) of pipeline break-make, level sensor (221) with sixth trip valve (28) linkage is connected.
8. The extraction type coal chemical industry gas flue gas concentration online monitoring device as claimed in claim 6, wherein the flue gas sampling device (1) comprises a sampling pipeline and a first cut-off valve for controlling the cut-off of the sampling pipeline, the gas inlet of the sampling pipeline is connected with the flue gas outlet of the gasification furnace (5), the gas outlet is connected with the pressure reducing device, and the liquid level sensor (221) is in linkage connection with the first cut-off valve.
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| CN111238885A (en) * | 2020-03-18 | 2020-06-05 | 江西力沃德科技有限公司 | Extraction type coal chemical industry gas flue gas concentration online monitoring device and method |
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