CN104307365A - Cleaning method of hydrogen sulfide gas - Google Patents
Cleaning method of hydrogen sulfide gas Download PDFInfo
- Publication number
- CN104307365A CN104307365A CN201410551993.1A CN201410551993A CN104307365A CN 104307365 A CN104307365 A CN 104307365A CN 201410551993 A CN201410551993 A CN 201410551993A CN 104307365 A CN104307365 A CN 104307365A
- Authority
- CN
- China
- Prior art keywords
- hydrogen sulfide
- gas
- absorbing liquid
- concentration
- clarifier
- 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
Links
Landscapes
- Gas Separation By Absorption (AREA)
Abstract
The invention relates to a cleaning method of hydrogen sulfide gas, and belongs to the field of waste gas treatment methods. The cleaning method of the hydrogen sulfide gas comprises the following steps: inletting waste gas containing hydrogen sulfide into a cleaner filled with absorption liquid from the bottom of the cleaner, and inletting a certain amount of air from the bottom of the cleaner at the same time, wherein the gas exhausted from the top of the cleaner is the gas with cleaned hydrogen sulfide, and the absorption liquid can be recycled after the air is introduced and used for recycling sulfur. The cleaning method of hydrogen sulfide gas adopts a liquid phase catalytic oxidation method using iron ion as the catalyst, the absorption liquid with high cleaning efficiency and great sulfur capacity is extremely beneficial to the cleaning of the H2S; under the optimal condition of the method, the cleaning efficiency to the H2S can achieve 99.7% and more, and the method has the advantages of being simple in process, low in operation cost, good in purifying effect and free from secondary pollution, and can be widely applied to the treatment process of the waste gas containing the hydrogen sulfide.
Description
Technical field
The present invention relates to a kind of purification method of hydrogen sulfide gas, belong to waste gas processing method field.
Background technology
Hydrogen sulfide is a kind of irritative gas, there is strong rotten egg smell, in gas, the existence of hydrogen sulfide not only can cause equipment and corrosion of piping catalyst poisoning, and more seriously threaten life safety, the very strict standard of the emission regulation of country to hydrogen sulfide, has now become one of urgent problem in Air Pollution Control field.
At present, more to the processing method of hydrogen sulfide waste gas both at home and abroad, mainly be divided into dry method and the large class of wet method two, especially comparatively outstanding with the feature of liquid phase oxidation in wet method, just current industrialized absorption oxidizing process, arsyl technique is not because environmental grounds re-uses, vanadium base technique is owing to using containing vanadium washing lotion, also the restriction of environmental regulation can be subject to, PDS desulfur technology due to used catalyst PDS need synthesis, desulphurization cost is corresponding wants high, more rising sulfur removal technology will be iron-based technique, but these class methods are in stability of solution at present, side reaction control and regeneration aspect etc. still have problems.
Therefore, study that a kind of technique is simple, operating cost is low, the purification method of the hydrogen sulfide gas of good purification and non-secondary pollution has certain ecnomics and enviroment benefit.
Summary of the invention
The present invention aims to provide that a kind of technique is simple, operating cost is low, the purification method of the hydrogen sulfide gas of good purification and non-secondary pollution.
The purification method of hydrogen sulfide gas of the present invention, comprises the following steps:
Being passed into from the bottom of clarifier by sulfide hydrogen waste gas is loaded with the clarifier of absorbing liquid, pass into a certain amount of air from the bottom of clarifier simultaneously, the gas of discharging from clarifier top is hydrogen sulfide purified gas, and absorbing liquid can pass into air to carry out regeneration cycle use and reclaims sulphur.
Preferably, absorbing liquid of the present invention is the mixed liquor of activating agent and ferric sulfate, and the consumption mass ratio of activating agent and ferric sulfate is 10-15:1, and the pH value sodium carbonate of absorbing liquid is adjusted to 8.5-9.
Preferred, the concentration of iron ion of the present invention is determined by the concentration of H2S in flue gas, adopts the iron ion of higher concentration during concentration height, adopts the iron ion of low concentration when concentration is low.
Preferred further, air intake of the present invention is make the amount of oxygen in absorbing liquid be 2.5-3%.
In purification method of the present invention, the major effect affecting purified treatment effect has the oxygen content in iron concentration, absorbing liquid pH value, activating agent consumption and liquid absorption.Wherein, in purification method of the present invention, variable concentrations ferric ion solutions is to H
2the sulfur capacity of S is different, and iron concentration is higher, and sulfur capacity is larger, to low concentration H
2the purification of S can adopt the iron ion of low concentration, and high concentration H
2the purification of S can adopt the iron ion of high concentration; Purification efficiency all presents the trend of rising with pH value, and along with reaction is carried out, the pH value of solution raises gradually, and when pH value is 8.5-9.0, its value substantially no longer changes, and now reacts the OH generated
-the H generated with reaction
+react, react and substantially reach balance in solution, purification efficiency, more than 99%, when therefore making catalyst cleaning tail gas with iron ion, can select the PH of its solution to be 8.5-9; The sulfur capacity of oxygen content on absorbing liquid has larger impact, and oxygen content is higher, and the sulfur capacity of absorbing liquid is larger, therefore, when oxygen content is lower in reality, when having influence on the sulfur capacity of solution, improves the sulfur capacity of absorbing liquid by increasing oxygen content; Iron ion instability in absorbing liquid easily produces precipitation, therefore, add the activating agent of different proportion, its effect can form stable complex with iron ion, and test shows, add activating agent in absorbing liquid after, the sulfur capacity of absorbing liquid is enhanced, and when the amount of activating agent is the 10-15 times of iron ion amount, sulfur capacity is better, therefore, catalyst cleaning H is made with iron ion
2during S tail gas, the mass ratio adopting activating agent-iron ion is 10-15, can improve the stability of iron ion and the sulfur capacity of solution in absorbing liquid.
When sulfur capacity reaches a certain amount of, the purification efficiency of absorbing liquid is 30%, and the sulfur capacity of solution is substantially saturated, now, be blown into air to absorbing liquid and carry out regenerative response, the S that removing suspends above, test shows, the difference of regenerated liquid and contrasting fluid is not too large, illustrates that in regenerated liquid, the catalytic action of iron ion obtains recovery, therefore, catalyst is made with iron ion, when absorbing liquid sulfur capacity reaches capacity, air can be passed into and regenerate, absorbing liquid is recycled.
The purification method of hydrogen sulfide gas of the present invention, adopts the liquid phase catalytic oxidation using iron ion as catalyst, and absorbing liquid has higher purification efficiency and larger sulfur capacity, and pole is beneficial to H
2the purification of S, under optimal conditions of the present invention, to H
2the purifying rate of S reaches more than 99.7%, and has that technique is simple, operating cost is low, the advantage such as good purification and non-secondary pollution, can be widely used in the treatment process of sulfide hydrogen waste gas.
Detailed description of the invention
Embodiment one:
Sulfide hydrogen waste gas is passed into the clarifier of the absorbing liquid of the mixed liquor being loaded with activating agent and ferric sulfate from the bottom of clarifier, in absorbing liquid, the consumption mass ratio of activating agent and ferric sulfate is 10-15:1, the pH value sodium carbonate of absorbing liquid is adjusted to 8.5-9, pass into a certain amount of air from the bottom of clarifier makes the amount of oxygen absorbing liquid be 2.5-3% simultaneously, the gas of discharging from clarifier top is hydrogen sulfide purified gas, and absorbing liquid can pass into air to carry out regeneration cycle use and reclaims sulphur.The concentration of iron ion is by H in flue gas simultaneously
2the concentration of S is determined, adopts the iron ion of higher concentration during concentration height, adopts the iron ion of low concentration when concentration is low.
Embodiment two: treatment effect
Use the purification method of hydrogen sulfide gas of the present invention, carry out purified treatment to the gas of certain H 2 S-containing gas, result as shown in Table-1.
Table-1 treatment effect
Claims (4)
1. the purification method of hydrogen sulfide gas, comprises the following steps:
Being passed into from the bottom of clarifier by sulfide hydrogen waste gas is loaded with the clarifier of absorbing liquid, pass into a certain amount of air from the bottom of clarifier simultaneously, the gas of discharging from clarifier top is hydrogen sulfide purified gas, and absorbing liquid can pass into air to carry out regeneration cycle use and reclaims sulphur.
2. the purification method of hydrogen sulfide gas as claimed in claim 1, it is characterized in that described absorbing liquid is the mixed liquor of activating agent and ferric sulfate, the consumption mass ratio of activating agent and ferric sulfate is 10-15:1, and the pH value sodium carbonate of absorbing liquid is adjusted to 8.5-9.
3. the purification method of hydrogen sulfide gas as claimed in claim 1, is characterized in that described concentration is by H in flue gas
2the concentration of S is determined, adopts the iron ion of higher concentration during concentration height, adopts the iron ion of low concentration when concentration is low.
4. the purification method of hydrogen sulfide gas as claimed in claim 1, is characterized in that described air intake is make the amount of oxygen in absorbing liquid be 2.5-3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551993.1A CN104307365A (en) | 2014-10-17 | 2014-10-17 | Cleaning method of hydrogen sulfide gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551993.1A CN104307365A (en) | 2014-10-17 | 2014-10-17 | Cleaning method of hydrogen sulfide gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104307365A true CN104307365A (en) | 2015-01-28 |
Family
ID=52362759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410551993.1A Pending CN104307365A (en) | 2014-10-17 | 2014-10-17 | Cleaning method of hydrogen sulfide gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104307365A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108430602A (en) * | 2015-07-24 | 2018-08-21 | 沙布拉开发与生产（沙捞越）股份有限公司 | A method of detaching hydrogen sulfide from discharge gas |
| CN109173669A (en) * | 2018-10-11 | 2019-01-11 | 云南民族大学 | A method of purification yellow phosphoric tail gas |
-
2014
- 2014-10-17 CN CN201410551993.1A patent/CN104307365A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108430602A (en) * | 2015-07-24 | 2018-08-21 | 沙布拉开发与生产（沙捞越）股份有限公司 | A method of detaching hydrogen sulfide from discharge gas |
| CN109173669A (en) * | 2018-10-11 | 2019-01-11 | 云南民族大学 | A method of purification yellow phosphoric tail gas |
| CN109173669B (en) * | 2018-10-11 | 2020-06-26 | 云南民族大学 | Method for purifying yellow phosphorus tail gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102151476B (en) | Method for removing hydrogen sulfide in gas phase through oxidization under high gravity field | |
| CN102847431B (en) | Method for treating claus technical tail gas | |
| AU2014253837B2 (en) | Absorbent, process for producing an absorbent, and process and device for separating off hydrogen sulphide from an acidic gas | |
| CN109603455A (en) | A kind of absorbent and method removing hydrogen sulfide in methane | |
| CN103768916A (en) | Oxidative desulphurization and brimstone recycling method | |
| CN206940821U (en) | Complexing Iron desulfurizer | |
| CN102553413B (en) | Acidic gas desulfurization method | |
| CN105233687A (en) | Method for removing elemental mercury in coal-fired flue gas | |
| CN100469420C (en) | Method for cleansing exhaust gas of sulfureted hydrogen in low concentration | |
| CN204307515U (en) | A kind of novel peroxide passivation tail gas desulfurization device | |
| CN103846003B (en) | Method for removing hydrogen sulfide gas | |
| CN203540310U (en) | Device for removing hydrogen sulfide through supergravity liquid phase oxidation-reduction | |
| CN106318500A (en) | Biological purifying process of unconventional gas | |
| CN104307365A (en) | Cleaning method of hydrogen sulfide gas | |
| CN105749715A (en) | Novel hydrogen peroxide-process tail gas desulphurization device | |
| CN103801175B (en) | Polyoxometallate, preparation and application thereof | |
| CN103432879A (en) | Method for desulfurization and denitrification of complexing ferroporphyrin smoke based on supergravity | |
| CN106606924A (en) | Desulphurization method and apparatus for sulfur-containing tail gas from rotary volatilizing kiln | |
| CN205109370U (en) | Kiln is volatilized including sulphur tail gas desulfurization device to gyration | |
| CN210814652U (en) | Deep hydrogen sulfide removal device for sulfur recovery tail gas | |
| CN103432872B (en) | Wet selective desulfurization system and wet selective desulfurization method | |
| CN109420422A (en) | A method of H 2 S-containing gas is removed using ultrasonic equipment | |
| CN104548906B (en) | Purification method for hydrogen sulfide containing gas | |
| CN103752135B (en) | A kind of purification method of carbon black plant tail gas | |
| CN103768913B (en) | A kind of method removing hydrogen sulfide and mercaptan in gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |
|
| WD01 | Invention patent application deemed withdrawn after publication |