CN113058410A - Desulfurizing agent for glass kiln flue gas and preparation method thereof - Google Patents

Desulfurizing agent for glass kiln flue gas and preparation method thereof Download PDF

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Publication number
CN113058410A
CN113058410A CN202110295188.7A CN202110295188A CN113058410A CN 113058410 A CN113058410 A CN 113058410A CN 202110295188 A CN202110295188 A CN 202110295188A CN 113058410 A CN113058410 A CN 113058410A
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Prior art keywords
flue gas
agent
glass kiln
desulfurizing agent
desulfurization
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吴俊峰
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Zhejiang Dajiang Energy Saving Technology Co ltd
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Zhejiang Dajiang Energy Saving Technology Co ltd
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    • 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
    • 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
    • B01D53/50Sulfur oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

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  • Engineering & Computer Science (AREA)
  • 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 a desulfurizing agent for glass kiln flue gas, which comprises N-methyldiethanolamine, calcium hydroxide, a stabilizer, a corrosion inhibitor, a defoaming agent, an accelerant, an activator, a dispersing agent and water, has no toxicity, can be widely applied in the fields of flue gas desulfurization and the like, has low surface tension, ensures that the flue gas is easy to form small bubbles, effectively increases the specific surface area of gas and liquid, improves the mass transfer rate, improves the desulfurization efficiency, effectively reduces sulfur-containing substances discharged into the air, reduces the pollution to the air, does not generate new pollutants, and has no trouble in the treatment of waste slag and waste water.

Description

Desulfurizing agent for glass kiln flue gas and preparation method thereof
Technical Field
The invention relates to the field of flue gas desulfurization, in particular to a desulfurizing agent for glass kiln flue gas and a method thereof.
Background
The glass kiln is a melting device used for heating glass at high temperature in the glass manufacturing industry, and because the price of natural gas or petroleum gas is too high, the cost for burning producer gas of the glass kiln with the same size is much lower than that for burning natural gas or petroleum gas, so that the number of the domestic glass kilns taking the producer gas as fuel is very large at present. However, the harmful substance is more in the flue gas that the kiln that takes producer gas as the raw materials produced, environmental pollution is serious, especially sulfur dioxide that contains in the flue gas, sulfur trioxide etc. contain the sulphur composition, if directly discharge into the atmosphere, can cause natural harm such as acid rain, consequently need carry out the sulphur removal processing to it before the gas emission of glass kiln as in, the absorption tower can generally be used in current sulphur removal processing, thereby realize the gas-liquid looks contact realization desulfurization purpose of flue gas and desulfurizing agent in the absorption tower, but the most solution concentration of current desulfurizing agent is on the low side, easy foaming, the sulphur removal efficiency is lower, lead to the sulphur removal to the flue gas not thorough.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a sulfur removal agent for glass kiln flue gas, which solves the technical problem that the sulfur-containing substances in the glass kiln flue gas are not completely absorbed in the prior art.
The invention solves the technical problems by the following technical scheme, and the desulfurization agent for the glass kiln flue gas comprises the following raw materials in parts by weight per 100 parts by weight of the desulfurization agent for the glass kiln flue gas:
Figure BDA0002984076650000011
by adopting the technical scheme, the prepared desulfurizing agent has no toxicity, can be widely applied in the fields of flue gas desulfurization and the like, has low surface tension, enables flue gas to easily form small bubbles, effectively increases the specific surface area of gas and liquid, improves the mass transfer rate, improves the desulfurization efficiency, effectively reduces sulfur-containing substances discharged into the air, reduces the pollution to the air, does not generate new pollutants, and has no trouble in the treatment of waste slag and waste water.
Preferably, the stabilizer is sodium alkyl benzene sulfonate.
By adopting the technical scheme, the sodium alkyl benzene sulfonate is used as the stabilizer, so that the desulfurizing agent can be kept in an emulsified state for a long time, and the stability of the desulfurizing agent is improved.
Preferably, the corrosion inhibitor is sodium chromate.
By adopting the technical scheme, the sodium chromate can slow down the corrosion speed of the desulfurizing agent to the absorption tower and prolong the service life of the absorption tower.
Preferably, the defoamer is a polydimethylsiloxane defoamer.
By adopting the technical scheme, the polydimethylsiloxane defoaming agent can reduce the surface tension of the desulfurizing agent, so that small bubbles are easily formed in flue gas, the gas-liquid specific surface area is effectively increased, the mass transfer rate is increased, and the desulfurization efficiency is improved.
Preferably, the accelerator is N, N-dimethylaniline or N, N-diethylaniline.
By adopting the technical scheme, the accelerant can improve the absorption speed of the sulfur removal agent on sulfur-containing oxides in the flue gas, and improve the sulfur removal rate of the sulfur removal agent.
Preferably, the activating agent is prepared from polyoxyethylene ether and sodium sulfonate according to the weight ratio of 1: 1.
By adopting the technical scheme, the polyoxyethylene ether is a nonionic activator, the sodium sulfonate is an anionic activator with strong surface activity, and the polyoxyethylene ether and the sodium sulfonate can be compounded, so that the integral dispersity of the sulfur remover is increased, the viscosity of the sulfur remover is reduced, the sulfur remover can be atomized into smaller water drops during spraying, and the mixing degree of the sulfur remover and flue gas is improved.
Preferably, the dispersant is one of sodium dodecyl sulfate or methyl amyl alcohol.
By adopting the technical scheme, the sodium dodecyl sulfate or the methyl amyl alcohol can uniformly disperse all components in the sulfur remover to form stable solution.
The invention also discloses a preparation method of the desulfurizing agent for glass kiln smoke,
s1, putting the N-methyldiethanolamine and the calcium hydroxide in corresponding parts into a mixing tank, adding corresponding water, and mixing and stirring for 10-15min in the mixing tank;
s2, adding proper amount of stabilizer, promoter and dispersant;
and S3, continuously adding a proper amount of corrosion inhibitor, defoaming agent and activating agent, and circularly stirring for 20-30min by using a stirring tank to obtain the desulfurizing agent for the glass kiln smoke.
The invention also discloses a using method of the desulfurizing agent for the glass kiln flue gas, the prepared desulfurizing agent is sprayed into the absorption tower, the desulfurizing agent is sprayed in liquid drops with the diameter of 1-5 microns, the desulfurizing agent is fully contacted and mixed with the flue gas, and the flue gas is washed, so that sulfur oxides in the flue gas are absorbed by the desulfurizing agent.
Compared with the prior art, the desulfurizing agent has no toxicity, can be widely applied in the fields of flue gas desulfurization and the like, has low surface tension, ensures that flue gas easily forms small bubbles, effectively increases the specific surface area of gas and liquid, improves the mass transfer rate, improves the desulfurization efficiency, effectively reduces sulfur-containing substances discharged into the air, reduces the pollution to the air, does not generate new pollutants, and has no trouble in treating waste slag and waste water.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1, a desulfurizing agent for glass kiln flue gas, N-methyldiethanolamine, calcium hydroxide, a stabilizer, a corrosion inhibitor, a defoaming agent, an accelerator, an activator, a dispersant and water, wherein the weight of each raw material of the desulfurizing agent is shown in table one per 100 parts by weight of the raw materials.
Example 2, a glass kiln smoke desulfurizing agent, different from example 1 in that the raw materials of the desulfurizing agent comprise the components and the weight shown in the table I.
Example 3, a glass kiln smoke desulfurizing agent, different from example 1 in that the raw materials of the desulfurizing agent comprise the components and the weight shown in the table one.
Example 4, a glass kiln smoke desulfurizing agent, different from example 1 in that the raw materials of the desulfurizing agent comprise the components and the weight shown in the table I.
Example 5, a glass kiln flue gas desulfurization agent, and compared with example 1, the difference is that the raw materials of the composition and weight are shown in table one.
Comparative example 1, a desulfurizing agent for glass kiln fumes, which is different from example 1 in that the components and the weight of the raw materials are shown in table one.
Comparative example 2, a desulfurizing agent for glass kiln fumes, which is different from example 1 in that the components and the weight of the raw materials are shown in table one.
TABLE-examples composition and ratio of sulfur removal agent per 100 weight parts
Figure BDA0002984076650000031
Figure BDA0002984076650000041
The performance of the sulfur removing agents prepared in the above examples and comparative examples was tested by the following method,
and (3) desulfurization effect: comparing the contents of the sulfur-containing compounds in the flue gas before and after desulfurization, and determining the desulfurization effect;
desulfurization speed: the time required to complete 95% of the desulfurization of the flue gas was measured.
Corrosion property: detecting the corrosion degree of the desulfurizer on the inner wall of the absorption tower after 30 days;
stability: and detecting the change condition of the desulfurizer generated after standing and storing for 30 days.
The results of the performance tests of the sulfur removal agents prepared in the above examples are shown in table 2.
TABLE two or more Performance test results of the sulfur removing agent prepared in each of the examples and comparative examples
Figure BDA0002984076650000042
From the test results, the content of N-methyldiethanolamine and calcium hydroxide in the desulfurizing agent can improve the total desulfurizing amount of the desulfurizing agent, the accelerating agent, the defoaming agent and the activating agent can improve the desulfurizing efficiency of the desulfurizing agent, the corrosion inhibitor can slow down the corrosion speed of the desulfurizing agent on the absorption tower, and the stabilizing agent and the dispersing agent can improve the long-term storage capacity of the desulfurizing agent.
The desulfurizing agent has no toxicity, can be widely applied in the fields of flue gas desulfurization and the like, has low surface tension, ensures that flue gas easily forms small bubbles, effectively increases the specific surface area of gas and liquid, improves the mass transfer rate, improves the desulfurization efficiency, effectively reduces sulfur-containing substances discharged into the air, reduces the pollution to the air, does not generate new pollutants, and has no trouble in treating waste slag and waste water.
Example 6, a method of preparing a desulfurization agent for glass kiln fumes:
s1, putting the N-methyldiethanolamine and the calcium hydroxide in corresponding parts into a mixing tank, adding corresponding water, and mixing and stirring for 10-15min in the mixing tank;
s2, adding proper amount of stabilizer, promoter and dispersant;
and S3, continuously adding a proper amount of corrosion inhibitor, defoaming agent and activating agent, and circularly stirring for 20-30min by using a stirring tank to obtain the desulfurizing agent for the glass kiln smoke.
Example 7, a method for using a desulfurization agent for glass kiln flue gas, comprising injecting the prepared desulfurization agent into an absorption tower, injecting the desulfurization agent as droplets with a diameter of 1-5 μm, sufficiently contacting and mixing the desulfurization agent with the flue gas, and washing the flue gas, so that sulfur oxides in the flue gas are absorbed by the desulfurization agent, and thus, the desulfurization agent can be sprayed to be sufficiently mixed with the glass kiln flue gas, thereby better exerting the desulfurization effect of the desulfurization agent.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (9)

1. The desulfurizing agent for the glass kiln flue gas is characterized in that every 100 parts by weight of the desulfurizing agent for the glass kiln flue gas comprises the following raw materials in parts by weight:
Figure FDA0002984076640000011
2. the desulfurization agent for glass kiln flue gas as claimed in claim 1, wherein: the stabilizer is sodium alkyl benzene sulfonate.
3. The desulfurization agent for glass kiln flue gas as claimed in claim 1, wherein: the corrosion inhibitor is sodium chromate.
4. The desulfurization agent for glass kiln flue gas as claimed in claim 1, wherein: the defoaming agent is a polydimethylsiloxane defoaming agent.
5. The desulfurization agent for glass kiln flue gas as claimed in claim 1, wherein: the accelerant is N, N-dimethylaniline or N, N-diethylaniline.
6. The desulfurization agent for glass kiln flue gas as claimed in claim 1, wherein: the activating agent is prepared from polyoxyethylene ether and sodium sulfonate according to the weight ratio of 1: 1.
7. The desulfurization agent for glass kiln flue gas as claimed in claim 1, wherein: the dispersing agent is one of sodium dodecyl sulfate or methyl amyl alcohol.
8. The method for preparing the desulfurizing agent for the glass kiln gas as defined in claim 1, wherein:
s1, putting the N-methyldiethanolamine and the calcium hydroxide in corresponding parts into a mixing tank, adding corresponding water, and mixing and stirring for 10-15min in the mixing tank;
s2, adding proper amount of stabilizer, promoter and dispersant;
and S3, continuously adding a proper amount of corrosion inhibitor, defoaming agent and activating agent, and circularly stirring for 20-30min by using a stirring tank to obtain the desulfurizing agent for the glass kiln smoke.
9. The use method of the desulfurizing agent for glass kiln flue gas according to claim 1, characterized in that: and spraying the prepared desulfurizing agent into the absorption tower, spraying the desulfurizing agent in the form of liquid drops with the diameter of 1-5 microns, fully contacting and mixing the desulfurizing agent with the flue gas, and washing the flue gas to ensure that sulfur oxides in the flue gas are absorbed by the desulfurizing agent.
CN202110295188.7A 2021-03-19 2021-03-19 Desulfurizing agent for glass kiln flue gas and preparation method thereof Pending CN113058410A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102977963A (en) * 2012-12-11 2013-03-20 江苏汉光实业股份有限公司 Method for preparing selective desulfurizing agent
WO2015085880A1 (en) * 2013-12-12 2015-06-18 北京博源恒升高科技有限公司 Method for removing sox in gas by using ethylene glycol complex solution
CN106268173A (en) * 2016-08-29 2017-01-04 合肥合意环保科技工程有限公司 A kind of method of flue gas desulfurization
CN107469589A (en) * 2016-06-07 2017-12-15 中国石油化工股份有限公司 Laminated desulfurizer and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102977963A (en) * 2012-12-11 2013-03-20 江苏汉光实业股份有限公司 Method for preparing selective desulfurizing agent
WO2015085880A1 (en) * 2013-12-12 2015-06-18 北京博源恒升高科技有限公司 Method for removing sox in gas by using ethylene glycol complex solution
CN107469589A (en) * 2016-06-07 2017-12-15 中国石油化工股份有限公司 Laminated desulfurizer and preparation method thereof
CN106268173A (en) * 2016-08-29 2017-01-04 合肥合意环保科技工程有限公司 A kind of method of flue gas desulfurization

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
谭厚章等: "表面活性剂性质理论与应用", 北京工业大学出版社, pages: 861 - 862 *

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