CN114028923A - On-line desulfurization method for combustion furnace for tail gas generated in carbon black production - Google Patents
On-line desulfurization method for combustion furnace for tail gas generated in carbon black production Download PDFInfo
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- CN114028923A CN114028923A CN202111432945.7A CN202111432945A CN114028923A CN 114028923 A CN114028923 A CN 114028923A CN 202111432945 A CN202111432945 A CN 202111432945A CN 114028923 A CN114028923 A CN 114028923A
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- tail gas
- combustion furnace
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- desulfurizer
- carbon black
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/485—Sulfur compounds containing only one sulfur compound other than sulfur oxides or hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
- B01D53/523—Mixtures of hydrogen sulfide and sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/306—Alkali metal compounds of potassium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/308—Carbonoxysulfide COS
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses an online desulfurization method for a carbon black production tail gas combustion furnace, wherein a completely dissolved 20% concentration K2CO3 solution is used as a desulfurizer, the desulfurizer is axially sprayed into a tail gas combustion furnace after being atomized by a carrier, the atomized desulfurizer and tail gas in the combustion of the tail gas combustion furnace at about 1100 ℃ are subjected to mixed desulfurization reaction in the combustion, the desulfurized flue gas is subjected to flue gas sulfur content detection, and the waste gas is discharged after the detection is qualified.
Description
Technical Field
The invention relates to the field of environmental protection and waste gas purification, in particular to a desulfurization method in online combustion of a combustion furnace for producing tail gas from carbon black.
Background
With the rapid development of social economy and the further acceleration of the industrialization process, a large amount of gaseous pollutants (mainly comprising paint, organic substances containing sulfur, nitrogen and oxygen or inorganic substances) are generated in the industrial process, industrial waste gas is formed, and the untreated industrial waste gas is discharged into the atmosphere, so that the environment is seriously polluted and the life quality of nearby residents is affected, for example, the residents feel uncomfortable, and symptoms such as headache, dizziness, nausea, vomiting, inappetence and poor spirit are caused. In addition, the desulfurization treatment process for industrial tail gas has an influence on the respiratory system, the circulatory system, the digestive system and the reproductive system of people, enterprises in coal chemical industry, petrochemical industry, refinery and the like process sulfur-containing crude oil or sulfur-containing coal in production to generate a large amount of sulfur-containing waste gas, and the tail gas is directly discharged without being treated, so that the tail gas cannot meet the national environmental protection requirement, can cause harm to the social environment and the health of people, and aggravates meteorological disasters such as acid rain and the like, and therefore, the desulfurization treatment process for industrial tail gas is an important issue concerned by industries such as petrochemical industry and the like.
The sulfur-containing waste gas in industry is usually recovered in the form of elemental sulfur by a sulfur recovery device, however, even though the waste gas is treated by a recovery unit, H still remains in the tail gas2S、Sx、COS、SO2And the emission requirement cannot be met by a certain amount of sulfur-containing compounds. In addition, the common treatment method is TO treat the sulfur-containing tail gas by a thermal incineration Technology (TO), and the thermal incineration Technology (TO) is adopted TO treat the sulfur-containing tail gas, so that a large amount of fuel is consumed, the economy is poor, and byproducts such as NOx and the like are often generated under a high-temperature condition, and secondary pollution is caused.
Especially with the rapid development of the tire and rubber industries in recent years, the consumption of carbon black used as a production matching reinforcing agent is increased year by year, the development of the carbon black industry is rapid, wet carbon black particles are required to be dried in the main stream wet carbon black production process, the drying process is to use a tail gas combustion furnace to burn hot smoke gas for heat exchange drying, the smoke gas after heat exchange is discharged on site, and in view of the environmental protection requirement on the discharged smoke gas, the existing desulfurization scheme in the carbon black industry adopts a method of centralized collection and desulfurization treatment after discharge.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide an online desulfurization method for a combustion furnace for tail gas generated in carbon black production, which can solve the problems that the traditional sulfur-containing tail gas purification method has excessive residues and generates byproducts such as NOx to influence the quality of a carbon black finished product.
In order to achieve the above object, an embodiment of the present invention provides an online desulfurization method for a combustion furnace for producing tail gas from carbon black, comprising the following steps:
s1, preparing a desulfurizing agent, and preparing a completely dissolved 20% concentration K2CO3The solution is used as a desulfurizing agent;
s2, erecting a desulfurization pipeline, erecting a carrier atomization device at the furnace end of the tail gas combustion furnace and erecting a spraying mechanism arranged along the axial direction of the tail gas combustion furnace, and axially spraying the desulfurizer in S1 into the tail gas combustion furnace after carrier atomization;
s3, carrying out mixed desulfurization reaction on the atomized desulfurizer and the combustion waste gas at about 1100 ℃ in the tail gas combustion furnace;
and S4, detecting the sulfur content in the flue gas of the desulfurized waste gas, and discharging the waste gas after the detection is qualified.
Preferably, when the sulfur content in the flue gas of the desulfurized tail gas is detected in S4, the detected sulfur content in the desulfurized tail gas is stably reduced to 150mg/m3The test was judged to be acceptable when the oxygen content was 6% or less.
Preferably, the spraying mechanism in S2 is provided with a matched flow control mechanism, and the control K is used to control2CO3The spraying flow of the desulfurizer solution is adjusted to control SO in the waste gas2Content of SO in exhaust gas2Content and K2CO3The spraying flow of the desulfurizer solution is in inverse proportion.
Compared with the prior art, the technical scheme has the advantages that the potassium carbonate water solution is used as the desulfurizer and sprayed into the tail gas combustion furnace, the sulfur content in the flue gas is effectively removed, the quality of a carbon black product is not affected, and the potassium carbonate water is adoptedThe solution is used as a desulfurizer, byproducts such as NOx and the like are not generated, the pollution to carbon black is avoided, and meanwhile, residual H in tail gas2S、Sx、COS、SO2The residual amount of the sulfur-containing compounds is greatly reduced.
Detailed Description
The following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Example 1: an on-line desulfurization method for a combustion furnace for tail gas generated in carbon black production comprises the following steps:
s1, preparing a desulfurizing agent, and preparing a completely dissolved 20% concentration K2CO3The solution acts as a desulfurizing agent.
And S2, erecting a desulfurization pipeline, erecting a carrier atomization device at the position of a tail gas combustion furnace end, and erecting a spraying mechanism arranged along the axial direction of the tail gas combustion furnace. The desulfurizer in S1 is atomized by carrier and sprayed into the tail gas combustion furnace, the spraying mechanism is provided with a matched flow control mechanism, and K is controlled2CO3The spraying flow of the desulfurizer solution is adjusted to control SO in the flue gas2Content of SO in exhaust gas2Content and K2CO3The spraying flow of the desulfurizer solution is in inverse proportion, thereby realizing SO in the waste gas2And (4) controlling the content.
And S3, mixing the atomized desulfurizer and the combustion waste gas at about 1100 ℃ in the tail gas combustion furnace for desulfurization reaction.
S4, when the sulfur content in the exhaust gas after desulfurization is detected, the detected sulfur content in the exhaust gas after desulfurization is stably reduced to 150mg/m3And (4) determining that the detection is qualified when the oxygen content is below 6%, and discharging tail gas after the detection is qualified.
The technical scheme has the advantage that the tail gas is sprayed into the tail gas combustion furnaceThe desulfurizing agent is used for synchronously desulfurizing, so that the waste gas is discharged on site to meet the environmental protection requirement (the sulfur content is less than 150mg/m3 and the oxygen content is 6%), potassium carbonate aqueous solution is used as the desulfurizing agent and sprayed into the tail gas combustion furnace, the sulfur content of the waste gas is effectively removed, the quality of a carbon black product is not influenced, the potassium carbonate aqueous solution is used as the desulfurizing agent, byproducts such as NOx and the like are not generated, the carbon black is prevented from being polluted, and meanwhile, residual H in tail gas2S、Sx、COS、SO2The residual amount of the sulfur-containing compounds is greatly reduced.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (3)
1. An online desulfurization method for a combustion furnace for tail gas generated in carbon black production is characterized by comprising the following steps:
s1, preparing a desulfurizing agent, and preparing a completely dissolved 20% concentration K2CO3The solution is used as a desulfurizing agent;
s2, erecting a desulfurization pipeline, erecting a carrier atomization device at the furnace end of the tail gas combustion furnace and erecting a spraying mechanism arranged along the axial direction of the tail gas combustion furnace, and axially spraying the desulfurizer in S1 into the tail gas combustion furnace after carrier atomization;
s3, carrying out mixed desulfurization reaction on the atomized desulfurizer and the combustion tail gas at about 1100 ℃ in the tail gas combustion furnace;
and S4, detecting the sulfur content in the flue gas of the desulfurized waste gas, and discharging the waste gas after the detection is qualified.
2. The carbon black production tail of claim 1The on-line desulfurization method for the gas combustion furnace is characterized in that when the sulfur content of flue gas in the desulfurized waste gas is detected in S4, the detected sulfur content in the desulfurized waste gas is stably reduced to 150mg/m3The test was judged to be acceptable when the oxygen content was 6% or less.
3. The method as claimed in claim 1, wherein the spraying mechanism of S2 is provided with a flow control mechanism, and the control K is used to control the flow rate of the tail gas from the furnace2CO3The spraying flow of the desulfurizer solution is adjusted to control SO in the waste gas2Content of SO in exhaust gas2Content and K2CO3The spraying flow of the desulfurizer solution is in inverse proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111432945.7A CN114028923A (en) | 2021-11-29 | 2021-11-29 | On-line desulfurization method for combustion furnace for tail gas generated in carbon black production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111432945.7A CN114028923A (en) | 2021-11-29 | 2021-11-29 | On-line desulfurization method for combustion furnace for tail gas generated in carbon black production |
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| CN114028923A true CN114028923A (en) | 2022-02-11 |
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| CN202111432945.7A Pending CN114028923A (en) | 2021-11-29 | 2021-11-29 | On-line desulfurization method for combustion furnace for tail gas generated in carbon black production |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08327014A (en) * | 1995-06-06 | 1996-12-10 | Mitsui Miike Mach Co Ltd | Burning method for furnace |
| US20050178302A1 (en) * | 2004-02-13 | 2005-08-18 | Ovidiu Marin | Process for burning sulfur-containing fuels |
| CN101078517A (en) * | 2007-06-08 | 2007-11-28 | 华北电力大学 | Method for simultaneously removing SO2, NOx from coal-fired furnace |
| CN205076996U (en) * | 2015-09-08 | 2016-03-09 | 嘉峪关大友嘉能化工有限公司 | Carbon black desiccator with desulphurization of exhaust gas device |
| CN206073113U (en) * | 2016-05-30 | 2017-04-05 | 杨天宇 | A kind of boiler energy-saving environmental protecting device |
| CN107860011A (en) * | 2017-11-22 | 2018-03-30 | 杭州杭锅工业锅炉有限公司 | A kind of carbon black tail gas burning boiler with the processing of carbon black dry waste gas |
| CN210057870U (en) * | 2019-03-05 | 2020-02-14 | 无锡双诚炭黑科技股份有限公司 | High-temperature desulfurization device for carbon black tail gas |
-
2021
- 2021-11-29 CN CN202111432945.7A patent/CN114028923A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08327014A (en) * | 1995-06-06 | 1996-12-10 | Mitsui Miike Mach Co Ltd | Burning method for furnace |
| US20050178302A1 (en) * | 2004-02-13 | 2005-08-18 | Ovidiu Marin | Process for burning sulfur-containing fuels |
| CN101078517A (en) * | 2007-06-08 | 2007-11-28 | 华北电力大学 | Method for simultaneously removing SO2, NOx from coal-fired furnace |
| CN205076996U (en) * | 2015-09-08 | 2016-03-09 | 嘉峪关大友嘉能化工有限公司 | Carbon black desiccator with desulphurization of exhaust gas device |
| CN206073113U (en) * | 2016-05-30 | 2017-04-05 | 杨天宇 | A kind of boiler energy-saving environmental protecting device |
| CN107860011A (en) * | 2017-11-22 | 2018-03-30 | 杭州杭锅工业锅炉有限公司 | A kind of carbon black tail gas burning boiler with the processing of carbon black dry waste gas |
| CN210057870U (en) * | 2019-03-05 | 2020-02-14 | 无锡双诚炭黑科技股份有限公司 | High-temperature desulfurization device for carbon black tail gas |
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