CN110339698A - A kind of processing method of boiler emission exhaust gas - Google Patents

A kind of processing method of boiler emission exhaust gas Download PDF

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Publication number
CN110339698A
CN110339698A CN201910736743.8A CN201910736743A CN110339698A CN 110339698 A CN110339698 A CN 110339698A CN 201910736743 A CN201910736743 A CN 201910736743A CN 110339698 A CN110339698 A CN 110339698A
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CN
China
Prior art keywords
gas
desulfurizing agent
tank
exhaust gas
pipeline
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910736743.8A
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Chinese (zh)
Inventor
张永锋
白云飞
雷立忠
蒋惩
蒋佳峰
陈奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yili Clean Energy Technology Co Ltd (yingshang)
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Yili Clean Energy Technology Co Ltd (yingshang)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Yili Clean Energy Technology Co Ltd (yingshang) filed Critical Yili Clean Energy Technology Co Ltd (yingshang)
Priority to CN201910736743.8A priority Critical patent/CN110339698A/en
Publication of CN110339698A publication Critical patent/CN110339698A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30Particle separators, e.g. dust precipitators, using loose filtering material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact

Abstract

The invention discloses a kind of processing methods of boiler emission exhaust gas, the following steps are included: gas sampling, at several pipelines connection boiler exit gas mouth, the other end of pipeline connects gas sampling tank, carry out mixed collection, spray process, spray process is carried out to the gas entered in gas sampling tank using several spray nozzles, the present invention passes through setting desulfurizing agent tank, after spraying operation, still circulation flows to desulfurizing agent tank after desulfurizing agent use, some unused desulfurizing agents can continue to use, desulfurizing agent after use precipitates in desulfurizing agent tank, by the way that vapor can is arranged, contain the desulfurizing agent of steam state in the gas Jing Guo spray process, gas after heating is contacted with the biggish condenser pipe of the temperature difference, separate the desulfurizing agent of steam state, reduce the loss of desulfurizing agent, by designing the spaced active carbon net of staggered form, due to gas The contact area of body and active carbon net is larger, to improve filter effect, avoids the exhaust emission environment of discharge.

Description

A kind of processing method of boiler emission exhaust gas
Technical field
The present invention relates to exhaust-gas treatment field, in particular to a kind of processing method of boiler emission exhaust gas.
Background technique
Exhaust-gas treatment refers to that the exhaust gas generated for industrial site, factory floor is pre-processed before external discharge, To reach the work for the standard that national exhaust gas externally discharges, general exhaust-gas treatment includes VOCs treatment, at dust exhaust gas Reason, soda acid exhaust-gas treatment, peculiar smell exhaust-gas treatment and air sterilizing purification etc..
Contain sulfide in the exhaust gas of existing boiler emission, is discharged into air and will form acid rain, so that environment is polluted, it is existing Having in the course of work for carrying out desulfurization process to exhaust gas, the use of desulfurizing agent is more frequent, after desulfurizing agent use, partial desulfurization agent Can due to exhaust gas temperature or height and formed in the steam state molecule exhaust gas that is present in that treated so that desulfurizing agent uses rear loss late It is larger, while the impurity of some granular-grades fails to exclude in time in desulfuration operations, is directly discharged into atmosphere and pollutes environment, is This, it is proposed that a kind of processing method of boiler emission exhaust gas.
Summary of the invention
The main purpose of the present invention is to provide a kind of processing methods of boiler emission exhaust gas, can effectively solve background skill The problems in art.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of processing method of boiler emission exhaust gas, comprising the following steps:
(1), gas sampling: at several pipelines connection boiler exit gas mouth, the other end of pipeline connects gas sampling tank, Carry out mixed collection;
(2), spray process: carrying out spray process to the gas entered in gas sampling tank using several spray nozzles, One end of spray nozzle is connected to desulfurizing agent tank, and liquid pump is configured in tank, and setting pipeline connects in the bottom end of tank body and desulfurizing agent tank It is logical;
(3), air inducing discharges: connecting air inducing pipeline at gas sampling tank bottom end, and installs air-introduced machine at air inducing pipeline, meets The other end of air piping carries out gas discharge;
(4), filtration treatment: the spaced active carbon net of staggered form is set in the outlet end of air inducing pipeline, adsorbs exhaust gas In remaining particulate matter.
Preferably, in the step (1), several pipelines used in gas sampling are spiral shape hollow pipe, to exhaust gas Cooling processing is carried out, length of hollow pipe is 5-10 meters at this.
Preferably, increase between the step (2) and step (3) and be provided with vapor can, by the gas of spray process The gas of the period is passed into vapor can by the desulfurizing agent containing steam state through piping, and on the segment pipe surface, installation adds Hot plate, and condenser pipe is installed in the inner wall of vapor can, the desulfurizing agent with condenser pipe of steam state contact to form liquid after heating, finally exist The bottom end setting liquid pipe of vapor can is connected to desulfurizing agent tank.
Preferably, the gas temperature in the heating plate inside pipeline is 100-200 °, the condenser pipe surface gas Temperature is 50-80 °.
Preferably, in the step (2), the concentration of desulfurizing agent is 1-20mg/L, and the gas flow rate in gas sampling tank For 200-1000ml/min.
Preferably, in the step (3), the gas flow rate in air inducing pipeline is 200-1000ml/min.
Preferably, in the step (4), pipeline locating for active carbon net is connect with air inducing pipeline spiral, and active carbon net Mesh diameter be 1-2mm.
Compared with prior art, the present invention provides a kind of processing methods of boiler emission exhaust gas, have following beneficial to effect Fruit:
1, the present invention is by setting desulfurizing agent tank, and after spraying operation, still circulation flows to desulfurizing agent after desulfurizing agent use Tank, some unused desulfurizing agents can continue to use, and the desulfurizing agent after use precipitates in desulfurizing agent tank, facilitates at concentration Reason;
2, the present invention is by setting vapor can, containing the desulfurizing agent of steam state in the gas Jing Guo spray process, by adding Hot gas, so that the desulfurizing agent of steam state be made to separate, comes back to desulfurization so that gas is contacted with the biggish condenser pipe of the temperature difference In agent tank, reduce the loss of desulfurizing agent.
3, the present invention increases pipeline interior air-flow locating for active carbon net by the design spaced active carbon net of staggered form Flow velocity, while the contact area of gas and active carbon net is larger, to improve filter effect, guarantees the bulky grain in gas Impurity is filtered, and the exhaust emission environment of discharge is avoided.
Part is not directed in the device to be the same as those in the prior art or can be realized by using the prior art.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the processing method of boiler emission exhaust gas of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top", The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with Specific orientation construction and operation, therefore be not considered as limiting the invention.
Embodiment 1:
A kind of processing method of boiler emission exhaust gas, comprising the following steps:
(1), gas sampling: at several pipelines connection boiler exit gas mouth, the other end of pipeline connects gas sampling tank, Mixed collection is carried out, several pipelines used in gas sampling are spiral shape hollow pipe, cooling processing are carried out to exhaust gas, at this The length of hollow pipe is 5-10 meters;
(2), spray process: carrying out spray process to the gas entered in gas sampling tank using several spray nozzles, One end of spray nozzle is connected to desulfurizing agent tank, and liquid pump is configured in tank, and setting pipeline connects in the bottom end of tank body and desulfurizing agent tank Logical, the concentration of desulfurizing agent is 5mg/L, and the gas flow rate in gas sampling tank is 200-1000ml/min;
Increase between gas sampling tank and air inducing pipeline and be provided with vapor can, by containing vapour in the gas of spray process The gas of the period is passed into vapor can by the desulfurizing agent of state through piping, installs heating plate on the segment pipe surface, and Condenser pipe is installed in the inner wall of vapor can, the desulfurizing agent with condenser pipe of steam state contact to form liquid after heating, finally in vapor can Bottom end setting liquid pipe be connected to desulfurizing agent tank.
Gas temperature in heating plate inside pipeline is 100 °, and the temperature of condenser pipe surface gas is 50 °.
(3), air inducing discharges: connecting air inducing pipeline at gas sampling tank bottom end, and installs air-introduced machine at air inducing pipeline, meets The other end of air piping carries out gas discharge, and the gas flow rate in air inducing pipeline is 200-1000ml/min;
(4), filtration treatment: the spaced active carbon net of staggered form is set in the outlet end of air inducing pipeline, adsorbs exhaust gas In remaining particulate matter, pipeline locating for active carbon net is connect with air inducing pipeline spiral, and the mesh diameter of active carbon net is 1- 2mm。
Embodiment 2:
A kind of processing method of boiler emission exhaust gas, comprising the following steps:
(1), gas sampling: at several pipelines connection boiler exit gas mouth, the other end of pipeline connects gas sampling tank, Mixed collection is carried out, several pipelines used in gas sampling are spiral shape hollow pipe, cooling processing are carried out to exhaust gas, at this The length of hollow pipe is 5-10 meters;
(2), spray process: carrying out spray process to the gas entered in gas sampling tank using several spray nozzles, One end of spray nozzle is connected to desulfurizing agent tank, and liquid pump is configured in tank, and setting pipeline connects in the bottom end of tank body and desulfurizing agent tank Logical, the concentration of desulfurizing agent is 10mg/L, and the gas flow rate in gas sampling tank is 200-1000ml/min;
Increase between gas sampling tank and air inducing pipeline and be provided with vapor can, by containing vapour in the gas of spray process The gas of the period is passed into vapor can by the desulfurizing agent of state through piping, installs heating plate on the segment pipe surface, and Condenser pipe is installed in the inner wall of vapor can, the desulfurizing agent with condenser pipe of steam state contact to form liquid after heating, finally in vapor can Bottom end setting liquid pipe be connected to desulfurizing agent tank.
Gas temperature in heating plate inside pipeline is 150 °, and the temperature of condenser pipe surface gas is 65 °.
(3), air inducing discharges: connecting air inducing pipeline at gas sampling tank bottom end, and installs air-introduced machine at air inducing pipeline, meets The other end of air piping carries out gas discharge, and the gas flow rate in air inducing pipeline is 200-1000ml/min;
(4), filtration treatment: the spaced active carbon net of staggered form is set in the outlet end of air inducing pipeline, adsorbs exhaust gas In remaining particulate matter, pipeline locating for active carbon net is connect with air inducing pipeline spiral, and the mesh diameter of active carbon net is 1- 2mm。
Embodiment 3:
A kind of processing method of boiler emission exhaust gas, comprising the following steps:
(1), gas sampling: at several pipelines connection boiler exit gas mouth, the other end of pipeline connects gas sampling tank, Mixed collection is carried out, several pipelines used in gas sampling are spiral shape hollow pipe, cooling processing are carried out to exhaust gas, at this The length of hollow pipe is 5-10 meters;
(2), spray process: carrying out spray process to the gas entered in gas sampling tank using several spray nozzles, One end of spray nozzle is connected to desulfurizing agent tank, and liquid pump is configured in tank, and setting pipeline connects in the bottom end of tank body and desulfurizing agent tank Logical, the concentration of desulfurizing agent is 20mg/L, and the gas flow rate in gas sampling tank is 200-1000ml/min;
Increase between gas sampling tank and air inducing pipeline and be provided with vapor can, by containing vapour in the gas of spray process The gas of the period is passed into vapor can by the desulfurizing agent of state through piping, installs heating plate on the segment pipe surface, and Condenser pipe is installed in the inner wall of vapor can, the desulfurizing agent with condenser pipe of steam state contact to form liquid after heating, finally in vapor can Bottom end setting liquid pipe be connected to desulfurizing agent tank.
Gas temperature in heating plate inside pipeline is 200 °, and the temperature of condenser pipe surface gas is 80 °.
(3), air inducing discharges: connecting air inducing pipeline at gas sampling tank bottom end, and installs air-introduced machine at air inducing pipeline, meets The other end of air piping carries out gas discharge, and the gas flow rate in air inducing pipeline is 200-1000ml/min;
(4), filtration treatment: the spaced active carbon net of staggered form is set in the outlet end of air inducing pipeline, adsorbs exhaust gas In remaining particulate matter, pipeline locating for active carbon net is connect with air inducing pipeline spiral, and the mesh diameter of active carbon net is 1- 2mm。
It is respectively 89.89%, 90.88% and to the desulfurization degree of final discharge gas detection in above three embodiments 88.73%, while the desulfurization agent content in desulfurizing agent tank is respectively 1253 liters, 1255 liters and 1300 liters, in conclusion comparison is real The concentration for applying desulfurizing agent in example is best in 10mg/L, while gas temperature and condenser pipe surface gas in heating plate inside pipeline Temperature between the temperature difference it is bigger, it is more to recycle the resulting dosage that falls off.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (7)

1. a kind of processing method of boiler emission exhaust gas, which comprises the following steps:
(1), gas sampling: at several pipelines connection boiler exit gas mouth, the other end of pipeline connects gas sampling tank, carries out Mixed collection;
(2), spray process: spray process is carried out to the gas entered in gas sampling tank using several spray nozzles, is being sprayed One end of mouth is connected to desulfurizing agent tank, and liquid pump is configured in tank, is connected in the bottom end of tank body with setting pipeline in desulfurizing agent tank;
(3), air inducing discharges: connecting air inducing pipeline at gas sampling tank bottom end, and installs air-introduced machine at air inducing pipeline, manages windward The other end in road carries out gas discharge;
(4), filtration treatment: the spaced active carbon net of staggered form is set in the outlet end of air inducing pipeline, is adsorbed residual in exhaust gas The particulate matter stayed.
2. a kind of processing method of boiler emission exhaust gas according to claim 1, it is characterised in that: in the step (1), Several pipelines used in gas sampling are spiral shape hollow pipe, carry out cooling processing to exhaust gas, the length of hollow pipe at this Degree is 5-10 meters.
3. a kind of processing method of boiler emission exhaust gas according to claim 1, it is characterised in that: the step (2) with Increase between step (3) and be provided with vapor can, by the desulfurizing agent containing steam state in the gas of spray process, by the period Gas is passed into vapor can through piping, installs heating plate on the segment pipe surface, and install and condense in the inner wall of vapor can Pipe, the desulfurizing agent with condenser pipe of steam state contact to form liquid after heating, and liquid pipe and desulfurizing agent finally is arranged in the bottom end of vapor can Tank connection.
4. a kind of processing method of boiler emission exhaust gas according to claim 3, it is characterised in that: on the inside of the heating plate Gas temperature in pipeline is 100-200 °, and the temperature of the condenser pipe surface gas is 50-80 °.
5. a kind of processing method of boiler emission exhaust gas according to claim 1, it is characterised in that: in the step (2), The concentration of desulfurizing agent is 1-20mg/L, and the gas flow rate in gas sampling tank is 200-1000ml/min.
6. a kind of processing method of boiler emission exhaust gas according to claim 1, it is characterised in that: in the step (3), Gas flow rate in air inducing pipeline is 200-1000ml/min.
7. a kind of processing method of boiler emission exhaust gas according to claim 1, it is characterised in that: in the step (4), Pipeline locating for active carbon net is connect with air inducing pipeline spiral, and the mesh diameter of active carbon net is 1-2mm.
CN201910736743.8A 2019-08-10 2019-08-10 A kind of processing method of boiler emission exhaust gas Pending CN110339698A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107497221A (en) * 2017-07-19 2017-12-22 湖南沃邦环保科技有限公司 A kind of exhaust gas purification system
CN206823485U (en) * 2017-05-04 2018-01-02 山东蓝博环保设备有限公司 A kind of novel desulphurization denitration dehumidifying integrated apparatus
CN207769383U (en) * 2017-12-27 2018-08-28 南昌市中天环保设备有限公司 A kind of flue gas desulfurization and denitrification device
CN207838545U (en) * 2017-11-28 2018-09-11 长兴普艾尔环境科技有限公司 Multi-layer combined air purifier
CN109882952A (en) * 2017-12-05 2019-06-14 陕西百世恒环保科技发展有限公司 A kind of efficient indoor air purification device
CN209005537U (en) * 2018-09-18 2019-06-21 抚顺齐隆化工有限公司 A kind of flue gas desulphurization unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206823485U (en) * 2017-05-04 2018-01-02 山东蓝博环保设备有限公司 A kind of novel desulphurization denitration dehumidifying integrated apparatus
CN107497221A (en) * 2017-07-19 2017-12-22 湖南沃邦环保科技有限公司 A kind of exhaust gas purification system
CN207838545U (en) * 2017-11-28 2018-09-11 长兴普艾尔环境科技有限公司 Multi-layer combined air purifier
CN109882952A (en) * 2017-12-05 2019-06-14 陕西百世恒环保科技发展有限公司 A kind of efficient indoor air purification device
CN207769383U (en) * 2017-12-27 2018-08-28 南昌市中天环保设备有限公司 A kind of flue gas desulfurization and denitrification device
CN209005537U (en) * 2018-09-18 2019-06-21 抚顺齐隆化工有限公司 A kind of flue gas desulphurization unit

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Application publication date: 20191018

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