CN212039674U - A clean system for purifying agricultural straw burns burning furnace tail gas - Google Patents
A clean system for purifying agricultural straw burns burning furnace tail gas Download PDFInfo
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- CN212039674U CN212039674U CN202020652234.5U CN202020652234U CN212039674U CN 212039674 U CN212039674 U CN 212039674U CN 202020652234 U CN202020652234 U CN 202020652234U CN 212039674 U CN212039674 U CN 212039674U
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Abstract
The utility model discloses a purification system for purifying tail gas of an agricultural straw incinerator, which comprises a wind collecting cover, a dust removal filter box, a nitrogen removal box, a cyclone dust collector, a carbon removal box and an exhaust chimney which are arranged from left to right in sequence; the air collecting cover is used for absorbing tail gas in the straw incinerator, and a first fan is arranged in the air collecting cover. The utility model discloses can burn the nitrogen oxide in the production tail gas to the straw, purify effectively like nitrogen monoxide and nitrogen dioxide, get rid of effectively carbon monoxide in the tail gas, purify a small amount of sulfur dioxide in the tail gas, sulfur dioxide and nitrogen oxide in the tail gas are oxidized to the electron beam that produces through the electron accelerator to under the circumstances of letting in ammonia, in the very short time oxidation become ammonium sulfate and ammonium nitrate; heat copper oxide through electric heater, turn into carbon dioxide with carbon monoxide, the utility model discloses purify thoroughly, purification efficiency is high, can get rid of harmful nitrogen oxide and oxycarbide simultaneously.
Description
Technical Field
The utility model relates to a gas purification technical field, especially a clean system for purifying agricultural straw burns burning furnace tail gas.
Background
The straw burning refers to burning the crop straws with fire to destroy or produce fertilizer plant ash, and the agricultural straw burning can also be made into biological particles to be used as fuel. However, the straw burning easily causes haze weather, generates a large amount of toxic and harmful substances, and threatens the health of human bodies. The pollution caused by straw burning is mainly that a large amount of tiny carbon particles and dust are easily released into the air due to insufficient burning, and although the straw burning is forbidden mostly, the pollution caused by the straw burning still exists.
The pollution treatment of burning straw generally uses special straw combustion equipment, then intensively purifies the waste gas generated by burning, and finally discharges the waste gas after reaching the emission standard of the polluted gas. Straw burns and is generally in the ground chemical treatment, peasant burns the straw on the spot, now for the non-staining atmosphere, can concentrate on burning the straw in rural area, only carry out simple processing to tail gas, sometimes do not reach emission standard, the gaseous product that the straw burnt is mainly nitrogen monoxide, nitrogen dioxide, carbon monoxide, carbon dioxide and a small amount of sulfur dioxide, nitrogen monoxide, nitrogen dioxide, carbon monoxide and sulfur dioxide can not directly discharge, there is not high purification efficiency to the present clean system of straw burning, the purifying effect is not thorough and can not be simultaneously to the problem of nitrogen oxide and carbon oxide purification.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a clean system for purifying agricultural straw burns burning furnace tail gas. The problem that the existing tail gas purification system has low purification efficiency, incomplete purification effect and can not purify nitrogen oxides and carbon oxides simultaneously is solved.
The purpose of the utility model is realized through the following technical scheme:
a purification system for purifying tail gas of an agricultural straw incinerator comprises a wind collecting cover, a dust removal filter box, a nitrogen removal box, a cyclone dust collector, a carbon removal box and an exhaust chimney which are sequentially arranged from left to right.
The air-collecting cover is used for absorbing tail gas in the straw incinerator, set up first fan in the air-collecting cover, the air inlet of dust removal rose box passes through the right angle return bend and is connected with the air-collecting cover, first fan sends the tail gas of absorption into in the dust removal rose box.
The dust removal rose box is provided with from left to right and filters cotton board and two active carbon filter screens, the gas outlet of dust removal rose box passes through the pipe connection with the air inlet of nitrogen removal case.
The device comprises a nitrogen removal box, an electron accelerator and an ammonia sprayer, wherein the nitrogen removal box is used for removing nitrogen oxides in tail gas, the electron accelerator is arranged on the side wall of the nitrogen removal box, the ammonia sprayer is arranged at the top of the nitrogen removal box, the irradiation direction of the electron accelerator is perpendicular to the airflow direction of the ammonia sprayer, the ammonia sprayer is connected with an ammonia generating assembly through a pipeline, the ammonia generating assembly comprises a liquid ammonia storage tank and a gasifier, the liquid outlet of the liquid ammonia storage tank is connected with the inlet end of the gasifier, and the outlet end of the gasifier is connected with the ammonia sprayer; the input end of the electron accelerator is also connected with a power box.
The gas outlet of the nitrogen removal box is connected with the gas inlet of a cyclone dust collector through a pipeline, and the cyclone dust collector is used for converting ammonium nitrate aerosol powder particles generated in the nitrogen removal box into ammonium nitrate crystal particles; and the air outlet of the cyclone dust collector is connected with the air inlet of the carbon removing box through a pipeline.
A support is arranged in the carbon removal box, an electric heater is arranged in the support, copper oxide is arranged on the support, and the electric heater is used for heating the copper oxide so as to remove carbon monoxide in tail gas; and the air outlet of the carbon removal box is connected with an exhaust chimney through a pipeline.
A second fan is arranged in a pipeline between the gas outlet of the dedusting filter box and the gas inlet of the nitrogen removal box, a third fan is arranged in a pipeline between the gas outlet of the nitrogen removal box and the gas inlet of the cyclone dust collector, and a fourth fan is arranged in a pipeline between the gas outlet of the cyclone dust collector and the gas inlet of the carbon removal box; and a fifth fan is arranged in a pipeline between the air outlet of the carbon removal box and the air inlet of the exhaust chimney.
The support is made of copper.
The power box is a direct-current high-voltage power box.
And air bag type maintenance doors are arranged on the side walls of the dust removal filter box, the nitrogen removal box and the carbon removal box.
The utility model has the advantages that:
the utility model discloses can burn the nitrogen oxide in the production tail gas to the straw, purify effectively like nitrogen monoxide and nitrogen dioxide, get rid of effectively carbon monoxide in the tail gas, purify a small amount of sulfur dioxide in the tail gas, sulfur dioxide and nitrogen oxide in the tail gas are oxidized to the electron beam that produces through the electron accelerator to under the circumstances of letting in ammonia, in the very short time oxidation become ammonium sulfate and ammonium nitrate; heat copper oxide through electric heater, turn into carbon dioxide with carbon monoxide, the utility model discloses purify thoroughly, purification efficiency is high, can get rid of harmful nitrogen oxide and oxycarbide simultaneously.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure, 1-a wind collecting cover, 2-a dust removing filter box, 3-a nitrogen removing box, 4-a cyclone dust collector, 5-a carbon removing box, 6-an exhaust chimney, 7-a first fan, 8-a filter cotton plate, 9-an active carbon filter screen, 10-an electron accelerator, 11-an ammonia sprayer, 12-a liquid ammonia storage tank, 13-a gasifier, 14-a power supply box, 15-a bracket, 16-an electric heater, 17-a second fan, 18-a third fan, 19-a fourth fan and 20-a fifth fan.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 1, a purification system for purifying tail gas of an agricultural straw incinerator comprises a wind collection cover 1, a dust removal filter box 2, a nitrogen removal box 3, a cyclone dust collector 4, a carbon removal box 5, an exhaust chimney 6, a first fan 7, a filter cotton plate 8, an active carbon filter screen 9, an electron accelerator 10, an ammonia gas nozzle 11, a liquid ammonia storage tank 12, a gasifier 13, a power supply box 14, a support 15, an electric heater 16, a second fan 17, a third fan 18, a fourth fan 19 and a fifth fan 20.
A connected mode of a clean system for purifying agricultural straw burns burning furnace tail gas is as follows:
a purification system for purifying tail gas of an agricultural straw incinerator comprises a wind collecting cover 1, a dedusting filter box 2, a nitrogen removal box 3, a cyclone dust collector 4, a carbon removal box 5 and an exhaust chimney 6 which are sequentially arranged from left to right.
The exhaust hood 1 is used for absorbing the tail gas in the straw incinerator, set up first fan 7 in the exhaust hood 1, the air inlet of dust removal rose box 2 passes through the right angle return bend and is connected with exhaust hood 1, first fan 7 sends the tail gas of absorption into in the dust removal rose box 2.
The dust removal rose box 2 is provided with from left to right and filters cotton board 8 and two active carbon filter screens 9, the gas outlet of dust removal rose box 2 passes through the pipe connection with the air inlet of denitrogenation case 3.
The nitrogen removal tank 3 is used for removing nitrogen oxides in tail gas, an electron accelerator 10 and an ammonia nozzle 11 are arranged in the nitrogen removal tank 3, the electron accelerator 10 is arranged on the side wall of the nitrogen removal tank 3, the ammonia nozzle 11 is arranged at the top of the nitrogen removal tank 3, the irradiation direction of the electron accelerator 10 is perpendicular to the airflow direction of the ammonia nozzle 11, the ammonia nozzle 11 is connected with an ammonia generating assembly through a pipeline, the ammonia generating assembly comprises a liquid ammonia storage tank 12 and a gasifier 13, the liquid outlet of the liquid ammonia storage tank 12 is connected with the inlet end of the gasifier 13, and the outlet end of the gasifier 13 is connected with the ammonia nozzle 11; the input end of the electron accelerator 10 is also connected with a power box 14.
The gas outlet of the nitrogen removal tank 3 is connected with the gas inlet of the cyclone dust collector 4 through a pipeline, and the cyclone dust collector 4 is used for converting ammonium nitrate aerosol powder particles generated in the nitrogen removal tank 3 into ammonium nitrate crystal particles; and the air outlet of the cyclone dust collector 4 is connected with the air inlet of the carbon removing box 5 through a pipeline.
A support 15 is arranged in the carbon removal box 5, an electric heater 16 is arranged in the support 15, copper oxide is arranged on the support 15, and the electric heater 16 is used for heating the copper oxide so as to remove carbon monoxide in tail gas; the gas outlet of the carbon removal box 5 is connected with an exhaust chimney 6 through a pipeline.
A second fan 17 is arranged in a pipeline between the air outlet of the dedusting filter box 2 and the air inlet of the nitrogen removal box 3, a third fan 18 is arranged in a pipeline between the air outlet of the nitrogen removal box 3 and the air inlet of the cyclone dust collector 4, and a fourth fan 19 is arranged in a pipeline between the air outlet of the cyclone dust collector 4 and the air inlet of the carbon removal box 5; a fifth fan 20 is arranged in a pipeline between the air outlet of the carbon removing box 5 and the air inlet of the exhaust chimney 6.
The bracket 15 is made of copper.
The power box 14 is a direct current high voltage power box.
And the side walls of the dust removal filter tank 2, the nitrogen removal tank 3 and the carbon removal tank 5 are provided with air bag type maintenance doors.
The working principle of the purification system for purifying the tail gas of the agricultural straw incinerator is as follows:
the tail gas generated by straw burning contains carbon monoxide, carbon dioxide, nitric oxide, nitrogen dioxide and a small amount of sulfur dioxide, and various types of particles generated by incomplete combustion, firstly, a wind collecting cover 1 in the system is connected with the straw burning furnace, a first fan 7 in a pipeline between the wind collecting cover 1 and a dedusting filter box 2 sucks the tail gas in the straw burning furnace, the sucked tail gas enters the dedusting filter box 2, firstly, the tail gas passes through a filter cotton plate 8 and two activated carbon filter screens 9 to adsorb the particles and dust particles of the tail gas and remove most of the particles, the tail gas after passing through the dedusting filter box 2 enters a nitrogen removal box 3 to remove the nitric oxide, the nitrogen dioxide and the small amount of sulfur dioxide, an electron accelerator 10 generates high-energy plasma under the power supply of a direct-current high-voltage power supply box 14, the nitric oxide, the nitrogen dioxide and the small amount of sulfur dioxide in the tail gas are irradiated by an electron beam of the electron accelerator 10, in a very short time, about ten thousandth of a second, nitric oxide, nitrogen dioxide and a small amount of sulfur dioxide are oxidized to generate sulfuric acid and nitric acid, liquid ammonia is sent into a gasifier 13 by a liquid ammonia storage tank 12 to be gasified into ammonia gas, the ammonia gas is downwards sprayed by an ammonia gas nozzle 11, the spraying direction of the ammonia gas nozzle 11 is vertical to the electron beam irradiation direction of an electron accelerator 10, under the condition of adding ammonia gas, nitric acid and sulfuric acid formed by oxidation react with the ammonia gas to generate aerosol powder particles of ammonium sulfate and ammonium nitrate, the aerosol powder particles of the ammonium sulfate and the ammonium nitrate enter the cyclone dust collector 4 along with tail gas under the action of the third fan 18, the cyclone dust collector 4 has the function of agglutinating and growing the aerosol powder particles of the ammonium sulfate and the ammonium nitrate in a short time to form crystal grains of the ammonium sulfate and the ammonium nitrate, and the crystal grains of the ammonium sulfate and the ammonium nitrate are collected to be used as agricultural fertilizers.
Tail gas behind cyclone 4 gets into carbon removal case 5 under fourth fan 19's effect, is provided with the support 15 of metal copper material in the carbon removal case 5, has placed the copper oxide on the support 15, is provided with electric heater 16 in the support, and electric heater 16 heats the copper oxide, and carbon monoxide in the tail gas and copper oxide take place the reaction, generate carbon dioxide and copper, have just so accomplished getting rid of carbon monoxide.
The tail gas after passing through the carbon removal box 5 does not contain nitric oxide, nitrogen dioxide, sulfur dioxide and carbon monoxide any more, and is discharged through the exhaust chimney 6 under the action of the fifth fan 20.
The utility model provides a dust removal rose box 2, all be provided with gasbag formula maintenance door on the lateral wall of denitrogenation case 3 and decarbonization case 5, this is for guaranteeing entire system's seal, when overhauing, open gasbag formula maintenance door, can change filtration cotton board 8 and active carbon filter screen 9 in the dust removal rose box 2, maintain and change electron accelerator 10 and ammonia shower nozzle 11 in the denitrogenation case 3, place the cupric oxide in the decarbonization case 5 and maintain and change electric heater, and to dust removal rose box 2, clean in the denitrogenation case 3 and the decarbonization case 5.
The utility model discloses can burn the nitrogen oxide in the production tail gas to the straw, purify effectively like nitrogen monoxide and nitrogen dioxide, get rid of effectively carbon monoxide in the tail gas, purify a small amount of sulfur dioxide in the tail gas, sulfur dioxide and nitrogen oxide in the tail gas are oxidized to the electron beam that produces through the electron accelerator to under the circumstances of letting in ammonia, in the very short time oxidation become ammonium sulfate and ammonium nitrate; heat copper oxide through electric heater, turn into carbon dioxide with carbon monoxide, the utility model discloses purify thoroughly, purification efficiency is high, can get rid of harmful nitrogen oxide and oxycarbide simultaneously.
Finally, it should be noted that the above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a clean system for purifying agricultural straw burns burning furnace tail gas which characterized in that: comprises a wind collecting cover (1), a dust removal filter box (2), a nitrogen removal box (3), a cyclone dust collector (4), a carbon removal box (5) and an exhaust chimney (6) which are arranged from left to right in sequence;
the exhaust dust collection device is characterized in that the air collection cover (1) is used for absorbing tail gas in the straw incinerator, a first fan (7) is arranged in the air collection cover (1), an air inlet of the dust removal filter box (2) is connected with the air collection cover (1) through a right-angle bent pipe, and the first fan (7) sends the absorbed tail gas into the dust removal filter box (2);
a filter cotton plate (8) and two activated carbon filter screens (9) are arranged in the dust removal filter box (2) from left to right, and an air outlet of the dust removal filter box (2) is connected with an air inlet of the nitrogen removal box (3) through a pipeline;
the device comprises a nitrogen removal box (3), an electron accelerator (10) and an ammonia sprayer (11) are arranged in the nitrogen removal box (3), the electron accelerator (10) is arranged on the side wall of the nitrogen removal box (3), the ammonia sprayer (11) is arranged at the top of the nitrogen removal box (3), the irradiation direction of the electron accelerator (10) is perpendicular to the airflow direction of the ammonia sprayer (11), the ammonia sprayer (11) is connected with an ammonia generation assembly through a pipeline, the ammonia generation assembly comprises a liquid ammonia storage tank (12) and a gasifier (13), the liquid outlet of the liquid ammonia storage tank (12) is connected with the inlet end of the gasifier (13), and the outlet end of the gasifier (13) is connected with the ammonia sprayer (11); the input end of the electron accelerator (10) is also connected with a power box (14);
an air outlet of the nitrogen removal box (3) is connected with an air inlet of a cyclone dust collector (4) through a pipeline, and the cyclone dust collector (4) is used for converting ammonium nitrate aerosol powder particles generated in the nitrogen removal box (3) into ammonium nitrate crystal particles; the air outlet of the cyclone dust collector (4) is connected with the air inlet of the carbon removal box (5) through a pipeline;
a support (15) is arranged in the carbon removal box (5), an electric heater (16) is arranged in the support (15), copper oxide is arranged on the support (15), and the electric heater (16) is used for heating the copper oxide so as to remove carbon monoxide in tail gas; and the air outlet of the carbon removal box (5) is connected with an exhaust chimney (6) through a pipeline.
2. The purification system for purifying the tail gas of the agricultural straw incinerator according to claim 1, characterized in that: a second fan (17) is arranged in a pipeline between the air outlet of the dedusting filter box (2) and the air inlet of the denitriding box (3), a third fan (18) is arranged in a pipeline between the air outlet of the denitriding box (3) and the air inlet of the cyclone dust collector (4), and a fourth fan (19) is arranged in a pipeline between the air outlet of the cyclone dust collector (4) and the air inlet of the decarbonizing box (5); and a fifth fan (20) is arranged in a pipeline between the air outlet of the carbon removal box (5) and the air inlet of the exhaust chimney (6).
3. The purification system for purifying the tail gas of the agricultural straw incinerator according to claim 1, characterized in that: the bracket (15) is made of copper.
4. The purification system for purifying the tail gas of the agricultural straw incinerator according to claim 1, characterized in that: the power box (14) is a direct-current high-voltage power box.
5. The purification system for purifying the tail gas of the agricultural straw incinerator according to claim 1, characterized in that: and air bag type maintenance doors are arranged on the side walls of the dust removal filter box (2), the nitrogen removal box (3) and the carbon removal box (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020652234.5U CN212039674U (en) | 2020-04-26 | 2020-04-26 | A clean system for purifying agricultural straw burns burning furnace tail gas |
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| CN202020652234.5U CN212039674U (en) | 2020-04-26 | 2020-04-26 | A clean system for purifying agricultural straw burns burning furnace tail gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113546516A (en) * | 2021-09-03 | 2021-10-26 | 郑州大学环境技术咨询工程有限公司 | CO for boiler2Collecting device |
| CN114288813A (en) * | 2021-12-15 | 2022-04-08 | 赖绍波 | Mine air purification wind pressure device |
| CN115090064A (en) * | 2022-07-25 | 2022-09-23 | 周海城 | High-sealing-performance energy-saving tail gas treatment equipment |
-
2020
- 2020-04-26 CN CN202020652234.5U patent/CN212039674U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113546516A (en) * | 2021-09-03 | 2021-10-26 | 郑州大学环境技术咨询工程有限公司 | CO for boiler2Collecting device |
| CN113546516B (en) * | 2021-09-03 | 2022-08-12 | 郑州大学环境技术咨询工程有限公司 | Boiler CO 2 Collection method |
| CN114288813A (en) * | 2021-12-15 | 2022-04-08 | 赖绍波 | Mine air purification wind pressure device |
| CN114288813B (en) * | 2021-12-15 | 2023-10-10 | 济南沃尔菲斯科技有限公司 | Mine air purification wind pressure device |
| CN115090064A (en) * | 2022-07-25 | 2022-09-23 | 周海城 | High-sealing-performance energy-saving tail gas treatment equipment |
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