CN202046881U - Device for preparing high-concentration liquid SO2 with waste gas containing H2S of rectisol - Google Patents
Device for preparing high-concentration liquid SO2 with waste gas containing H2S of rectisol Download PDFInfo
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- CN202046881U CN202046881U CN2011200720714U CN201120072071U CN202046881U CN 202046881 U CN202046881 U CN 202046881U CN 2011200720714 U CN2011200720714 U CN 2011200720714U CN 201120072071 U CN201120072071 U CN 201120072071U CN 202046881 U CN202046881 U CN 202046881U
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- rectisol
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model discloses a device for preparing high-concentration liquid SO2 with waste gas containing H2S of rectisol, and relates to a device for preparing the high-concentration liquid SO2 with H2S waste gas. The device is suitable for rectisol process of a synthetic ammonia device and carries out recycling on the contained H2S as a raw material so that emission is reduced, and the environment is protected. The device comprises an acid gas liquid separation tank, an acid gas burning device, a cooling device, an electric demister, a pre-drying tower, a multi-stage absorption tower device, a resolution tower device, an SO2 gas cooler, an SO2 gas drying tower, an SO2 condenser and a liquid SO2 storage tank which are sequentially connected with one another, wherein the acid gas liquid separation tank is connected with a rectisol tail gas outlet, the cooling device comprises a waste heat boiler, a venturi tube and an indirect cooler which are sequentially communicated with each other, the venturi tube also comprises a venturi tube circulation pump, the resolution tower device comprises a resolution tower, a rich liquid groove and a rich liquid pump, and the rich liquid groove is connected with the resolution tower through the rich liquid pump. The device solves the pollution problem of the H2S gas to the environment, and reasonably utilizes hydrogen sulfide resources.
Description
Technical field
The utility model relates to a kind of with H
2S waste gas is produced high concentration liquid SO
2Device, relate in particular to from the synthetic ammonia installation low-temperature rectisol, the Mathanol regenerating tower produces contains H
2Reclaim the liquid SO that sulphur is produced high density in the S gas
2Device.
Background technology
Synthetic ammonia installation low-temperature rectisol, Mathanol regenerating tower produce contains H
2S gas (contains H
2S: CO～25%,
2:～68%), if without the H that removes in the gas
2S and directly being discharged in the atmosphere can cause serious environmental to pollute, and particularly the sulfur-bearing gas field constantly occurs in recent years, contains H
2The handling problem of the sour gas of S gas more and more causes people's attention.In order to reach the effect that purifies hydrogen sulfide tail gas, recycle H simultaneously
2Sulphur among the S.The present industrial recovery sulphur from hydrogen sulfide that generally adopts, the technology that occupy dominant position is Claus method (claiming Kraus process again).This method has certain requirement for handling the hydrogen sulfide content in the gas and the impurity composition of hydrogen sulfide coexistence etc., only is applicable to the H that the content sulfur content is higher, concentration is bigger
2S tail gas usually need be to containing H
2The gas of S carries out pre-treatment, with enrichment hydrogen sulfide content wherein, needs to increase pretreatment technology and equipment.Because of the research emphasis of Kraus process is that hydrogen sulfide containing gas is handled recovery sulphur, technical process is long, and equipment is many, and investment is high, be unfavorable for the comprehensive utilization of resource, and the maximum purposes of sulphur still is used to produce sulfuric acid.In addition, the Kraus process operation is step, must strict control H in operating process
2S: SO
2(mol ratio) is 2: 1, still contains higher hydrogen sulfide in the tail gas simultaneously, is difficult to satisfy country for requirement on environmental protection, so be subjected to certain limitation in actual applications.
Sulfurous gas is a kind of important chemical material, is widely used in industries such as agricultural chemicals, medicine, regenerated fiber, dyestuff, sugaring, system wine, papermaking, refining of petroleum and metal smelting.China keeps steady-state growth situation to the sulfurous gas demand in recent years, in the various consumer fields of sulfurous gas, paper pulp and papermaking are the most promising, increase day by day along with national paper recycle amount, bleaching is handled used sulfur dioxide liquid amount and will be increased thereupon, and vat powder output average growth rate per annum remains on about 10%; In food and agricultural, along with the quick growth of domestic corn processed amount, a year sulfurous gas demand will increase.The coming years, China was comparatively vigorous to the sulfur dioxide liquid demand.
The minister of national environmental protection portion workshop is examined original text by " sulfuric acid industry pollutant emission standard ", and new standard will be carried out since on January 1st, 2011, and on January 1st, 2013 played existing enterprise and will carry out newly-built enterprise emission limit set.The enforcement of new standard will bring profound influence to the present situation and the technical development of sulfuric acid industry production.China's sulfur dioxide emissions total amount ranks first in the world, and annual discharging sulfurous gas is more than 2,000 ten thousand tons.China's acid rain district area accounts for area 1/3, and the acid rain type is based on sulfuric acid type.At the severe situation of sulfur dioxide emissions, country has reduced discharging sulfurous gas and has classified emphasis as.According to emission standard desulfurizer is installed, is advanced industry sulfur dioxide pollutions such as iron and steel, coloured, chemical industry, building materials to administer.
Along with the increasingly stringent of national requirements for environmental protection, to the synthetic ammonia installation low-temperature rectisol, the Mathanol regenerating tower produces contains H
2The improvement of S gas and other sulfurous gas will be more urgent, and the products such as sulfur dioxide liquid that utilize technology such as burning, Trisodium Citrate method to reclaim this part sulphur production high added value are a kind of good selections.Therefore, taking into full account under raw material supply and the situation of periphery to the sulfur dioxide liquid demand, from the synthetic ammonia installation low-temperature rectisol, the Mathanol regenerating tower produces contains H
2Reclaim the liquid SO that sulphur is produced high density in the S gas
2Device be expected to be applied at home in the near future.
The utility model content
The utility model provides a kind of synthetic ammonia installation low-temp methanol washing process that is applicable at above problem, contains H with it
2S carries out regeneration for it for " raw material ", and then reduces the H that contains with low-temperature rectisol of discharging, protection environment
2S waste gas is produced high concentration liquid SO
2Device.
The technical solution of the utility model: comprise that the sour gas that connects successively divides flow container, acid gas incinerator, refrigerating unit, electrostatic precipitator, predrying tower, multistage absorption tower apparatus, Analytic Tower device, SO
2Gas cooler, SO
2Calcium chloride jar, SO
2Condenser and liquid SO
2Storage tank; The tail gas outlet that described sour gas divides flow container to connect described low-temperature rectisol; Described refrigerating unit comprises waste heat boiler, Venturi meter and the indirect cooler that is communicated with successively; Described Venturi meter also comprises the Venturi meter recycle pump; Described Analytic Tower device comprises Analytic Tower, rich solution groove and rich solution pump, and described rich solution pump is connected the rich solution groove with Analytic Tower.
Described sour gas divides the liquid bath outlet to be provided with air pressure reducer.
Described acid gas incinerator is incinerator, H
2S burner, air-blaster and oxygen-increasing device, described incinerator is provided with the front and back stages burner hearth, described H
2The S burner is located at first step burner hearth ingress; Described air-blaster and oxygen-increasing device are communicated with described two-stage burner hearth respectively.
The hydrops groove of described electrostatic precipitator connects described Venturi meter.
Described multistage absorption tower comprises first grade absorption tower, one-level lean solution groove, one-level lean pump, two-level absorption tower, secondary lean solution groove, secondary lean pump, lean solution water cooler and interchanger, described first grade absorption tower and two-level absorption tower serial connection; The intercepting basin of described first grade absorption tower connects described interchanger; Described interchanger connects described rich solution groove.
Described indirect cooler is that heat-eliminating medium is water and cooled object is cooled to 35-40 ℃ water cooler.
The utility model has not only solved the synthetic ammonia installation low-temperature rectisol, and the Mathanol regenerating tower produces contains H
2S gas has reasonably utilized the hydrogen sulfide resource simultaneously, and has utilized H fully for the pollution of environment
2S gas burns the heat that produces, and produces liquid SO with the Trisodium Citrate method
2, the Trisodium Citrate complex liquid is renewable to be recycled, the liquid SO that is produced
2Good product quality, concentration height, be widely used.Its feature is continous-stable, advanced person, reliable, reduced investment, production operation safety.The H that the utility model produces the synthetic ammonia low-temperature rectisol
2It is environmental protection that the sulfur recovery of S gas is handled, and total system does not have sewage, waste residue produces, SO in the tail gas after the processing
2Content≤280mg/m
3, be better than national environmental standard, realize the environmental protection engineering.
Description of drawings
Fig. 1 is a functional block diagram of the present utility model
Fig. 2 is the structural representation of burning disposal in the utility model-predrying section (I frame among Fig. 1)
Fig. 3 is the structural representation of multistage absorption tower apparatus in the utility model (II frame among Fig. 1)
Fig. 4 is the structural representation of parsing-collection section in the utility model (III frame, IV frame among Fig. 1)
The I frame is a burning disposal-predrying section among the figure, and the II frame is the multistage absorption tower apparatus, and the III frame is the Analytic Tower device, and the IV frame is the solution-air transfer equipment;
The 1st, sour gas divides flow container, and the 2nd, incinerator, the 3rd, air blower, the 4th, waste heat boiler, the 5th, Venturi meter, the 6th, Venturi meter recycle pump, the 7th, inter cooler, the 8th, electrostatic precipitator, the 9th, predrying tower, the 10th, SO
2Blower fan, the 11st, first grade absorption tower, the 12nd, one-level lean solution groove, the 13rd, one-level lean pump, the 14th, two-level absorption tower, the 15th, secondary lean solution groove, the 16th, secondary lean pump, the 17th, desorption tower, the 18th, interchanger, the 19th, lean solution water cooler, the 20th, rich solution groove, the 21st, rich solution pump, the 22nd, SO
2Gas cooler, the 23rd, SO
2Calcium chloride jar, the 24th, SO
2Compressor, the 25th, SO
2Condenser, the 26th, liquid SO
2Storage tank.
Embodiment
The utility model is shown in Fig. 1-4: comprise that the sour gas that connects successively divides flow container 1, acid gas incinerator, refrigerating unit, electrostatic precipitator 8, predrying tower 9, multistage absorption tower apparatus, Analytic Tower device, SO
2Gas cooler 22, SO
2 Calcium chloride jar 23, SO
2Condenser 25 and liquid SO
2Storage tank 26; The tail gas outlet that described sour gas divides flow container 1 to connect described low-temperature rectisol; Described refrigerating unit comprises successively the waste heat boiler, Venturi meter and the indirect cooler that are communicated with (indirect cooler: tubular structure, tube side leads to flue gas, shell side leads to water coolant); Described Venturi meter also comprises the Venturi meter recycle pump; Described Analytic Tower device comprises Analytic Tower, rich solution groove and rich solution pump, and described rich solution pump is connected the rich solution groove with Analytic Tower.
Described sour gas divides liquid bath 1 outlet to be provided with air pressure reducer.
Described acid gas incinerator is incinerator 2, H
2S burner, air-blaster and oxygen-increasing device, described incinerator is provided with the front and back stages burner hearth, described H
2The S burner is located at first step burner hearth ingress; Described air-blaster and oxygen-increasing device are communicated with described two-stage burner hearth respectively.
The hydrops groove of described electrostatic precipitator connects described Venturi meter.
Described multistage absorption tower comprises first grade absorption tower, one-level lean solution groove, one-level lean pump, two-level absorption tower, secondary lean solution groove, secondary lean pump, lean solution water cooler and interchanger, described first grade absorption tower and two-level absorption tower serial connection; The intercepting basin of described first grade absorption tower connects described interchanger; Described interchanger connects described rich solution groove.
Described indirect cooler is that heat-eliminating medium is water and cooled object is cooled to 35-40 ℃ water cooler.
I frame among Fig. 1 (being Fig. 2) is a burning disposal-predrying section, comprises that sour gas divides flow container 1, incinerator 2, air blower 3 (being air-blaster), waste heat boiler 4, Venturi meter 5, Venturi meter recycle pump 6, inter cooler 7, electrostatic precipitator 8, predrying tower 9, SO
2Blower fan 10.
II frame among Fig. 1 (being Fig. 3) is the multistage absorption tower apparatus, comprises first grade absorption tower 11, one-level lean solution groove 12, one-level lean pump 13, two-level absorption tower 14, secondary lean solution groove 15, secondary lean pump 16, interchanger 18, lean solution water cooler 19.
III frame among Fig. 1 (being III among Fig. 4) is the Analytic Tower device, comprises desorption tower 17, rich solution groove 20, rich solution pump 21, SO
2Gas cooler 22, SO
2Drying tower 23.
IV frame among Fig. 1 (being IV among Fig. 4) is the solution-air transfer equipment, comprises SO
2Compressor 24, SO
2Condenser 25, liquid SO
2Storage tank 26.
The principle of this device when using is as follows:
1, SO
2Produce:
Synthetic ammonia installation low-temperature rectisol, Mathanol regenerating tower produce contains H
2S gas (contains H
2S: CO～28%,
2:～65%, tolerance 2500Nm
3/ h) after dividing flow container to isolate sour water, sour gas comes out, through being decompressed to 16kPa, after entering air that incinerator and air-blaster come and additional part pure oxygen and mixing, in incinerator, burn together, because incinerator is to burn in air excess atmosphere, has guaranteed H
2S reaches perfect combustion, and incineration temperature is controlled at～1200 ℃, has generated to contain SO
2, O
2, CO
2And N
2The mixing furnace gas ,～11.5%SO
2The mixing furnace gas be cooled to 300 ℃ through waste heat boiler and enter after Venturi Scrubber cools to about 65 ℃, be cooled to enter electrostatic precipitator and remove SO about 38 ℃ through indirect condenser again
3Acid mist is sent to SO
2The absorption operation absorbs.
At the incinerator burner H is set
2The S burner carries out incinerator temperature out and air-blaster, pure oxygen add-on chain simultaneously.H
2The S burner is to guarantee H
2The key part of S perfect combustion in incinerator, efficient burning, this device adopts novel, burner with high efficiency, and its maximum characteristics are that Vorticose mixed gas is long in the center residence time of combustion chamber, and it is more abundant to burn.Burner is provided with fire monitor equipment.Incinerator adopts horizontal steel cylinder liner insulating brick and firebrick structure, and incinerator lining refractory brick adopts the big special shaped brick of corundum material, heatproof 〉=1500 ℃.For guaranteeing H
2S and air can burn by thorough mixing, and barricade is set in the incinerator one, overfiren air port is set in the barricade back is used for replenishing air and regulates fire box temperature, guarantee H
2The perfect combustion of S gas, unlikely generation sublimed sulphur.
Because of hydrogen sulfide has severe toxicity, inflammable, explosive characteristic, the gas that device is provided with hydrogen sulfide and sulfurous gas is dense, the display instrument of tolerance, temperature, pressure, also should be provided with the hydrogen sulfide warning howler especially at the scene;
At the synthetic ammonia installation low-temperature rectisol, the Mathanol regenerating tower produces contains H
2Supplying gas of S gas is provided with the single line through call between post and the incinerator post, is convenient to the contact the when generation of both sides' production status is urgent to be changed; Both sides are provided with the remote valve that cuts off source of the gas, and two valves are respectively by the post is controlled separately, the post of supplying gas should be at remote-control cut-off valve and H
2Interlocking igniting automatic instrument(s) is set between S gaseous combustion emptying device.
2, SO
2Absorb:
Contain 10.2～11.5% SO by preceding operation
2Furnace gas enters the absorption tower of two-stage tandem successively, and the sulfurous gas in the furnace gas is absorbed SO by the Trisodium Citrate complex liquid
2Content≤280mg/m
3Back qualified discharge.The Trisodium Citrate complex liquid has absorbed SO in the furnace gas
2After, generate and be rich in SO
2Trisodium Citrate complex liquid (rich solution).
3, SO
2Desorb:
Be rich in SO from what absorption section was sent here
2The Trisodium Citrate complex liquid after heating, send Analytic Tower to resolve.The sulfur dioxide gas gas that is parsed by the parsing cat head send drying and compression section after cooling.Parse SO
2After sodium citrate buffer solution (lean solution) through the cooling after send SO
2Absorption section is reused.
4, SO
2Drying and compression:
Analytic Tower ejects next SO
2Gas is sent into drying tower after cooling with 93% sulfuric acid drying, dried SO through condensation
2Purity reaches 99.7% and send compressor again; SO
2Be compressed the back temperature, pressure and raise SO after cooling off
2Become liquid to send SO by condensation of gas
2Basin is liquid SO
2Product.
5, SO
2Packing and accumulating:
Sulfur dioxide liquid is stored with basin and steel cylinder, with steel cylinder and the transportation of groove tank car.Storage and transportation must meet the requirement of country's " gas cylinder safely supervision rules " and TDGC.Storing the steel cylinder of transport liquid sulfurous gas and the color of groove jar is silver gray, and tangible black " sulfur dioxide liquid " printed words are arranged.
6, the regeneration of Trisodium Citrate complex liquid:
The Trisodium Citrate complex liquid is owing to autoxidation and furnace gas band acid mist, and sulfate ion increases the assimilated efficiency reduction gradually and adopts the crystalline method that sulfate radical is removed, and clear liquid returns systemic circulation and uses.The sodium sulfate that the regenerative section of Trisodium Citrate complex liquid produces is for synthesis of detergent industry production stain remover and detergent use.
The utility model is from the synthetic ammonia installation low-temperature rectisol, and the Mathanol regenerating tower produces contains H
2Reclaim the liquid SO that sulphur is produced high density in the S gas
2Apparatus features: continous-stable, advanced person, reliable, reduced investment, production operation safety, the tail gas after the processing is better than national environmental standard; Liquid SO
2Indexs such as middle moisture and residue reach national premium grads standard.This device has fundamentally solved the synthetic ammonia installation low-temperature rectisol, and the Mathanol regenerating tower produces contains H
2The pollution problem of S gas, and the sulphur resource is utilized effectively, with country to reduce discharging, to have proposed that higher guidance requires be corresponding in environmental protection.To containing H in the industry
2A new way has been opened up in the gas recovery utilization of S, and the sulphur resource is fully used, and no matter in environment protection, or all is significant on the economic benefit.
Claims (6)
1. with the H that contains of low-temperature rectisol
2S waste gas is produced high concentration liquid SO
2Device, it is characterized in that, comprise that successively the sour gas that connects divides flow container, acid gas incinerator, refrigerating unit, electrostatic precipitator, predrying tower, multistage absorption tower apparatus, Analytic Tower device, SO
2Gas cooler, SO
2Calcium chloride jar, SO
2Condenser and liquid SO
2Storage tank; The tail gas outlet that described sour gas divides flow container to connect described low-temperature rectisol; Described refrigerating unit comprises waste heat boiler, Venturi meter and the indirect cooler that is communicated with successively; Described Venturi meter also comprises the Venturi meter recycle pump; Described Analytic Tower device comprises Analytic Tower, rich solution groove and rich solution pump, and described rich solution pump is connected the rich solution groove with Analytic Tower.
2. the H that contains with low-temperature rectisol according to claim 1
2S waste gas is produced high concentration liquid SO
2Device, it is characterized in that described sour gas divides liquid bath outlet to be provided with air pressure reducer.
3. the H that contains with low-temperature rectisol according to claim 1
2S waste gas is produced high concentration liquid SO
2Device, it is characterized in that described acid gas incinerator is incinerator, H
2S burner, air-blaster and oxygen-increasing device, described incinerator is provided with the front and back stages burner hearth, described H
2The S burner is located at first step burner hearth ingress; Described air-blaster and oxygen-increasing device are communicated with described two-stage burner hearth respectively.
4. the H that contains with low-temperature rectisol according to claim 1
2S waste gas is produced high concentration liquid SO
2Device, it is characterized in that the hydrops groove of described electrostatic precipitator connects described Venturi meter.
5. the H that contains with low-temperature rectisol according to claim 1
2S waste gas is produced high concentration liquid SO
2Device, it is characterized in that described multistage absorption tower comprises first grade absorption tower, one-level lean solution groove, one-level lean pump, two-level absorption tower, secondary lean solution groove, secondary lean pump, lean solution water cooler and interchanger, described first grade absorption tower and two-level absorption tower serial connection; The intercepting basin of described first grade absorption tower connects described interchanger; Described interchanger connects described rich solution groove.
6. the H that contains with low-temperature rectisol according to claim 1
2S waste gas is produced high concentration liquid SO
2Device, it is characterized in that described indirect cooler is that heat-eliminating medium is water and cooled object is cooled to 35-40 ℃ water cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200720714U CN202046881U (en) | 2011-03-16 | 2011-03-16 | Device for preparing high-concentration liquid SO2 with waste gas containing H2S of rectisol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200720714U CN202046881U (en) | 2011-03-16 | 2011-03-16 | Device for preparing high-concentration liquid SO2 with waste gas containing H2S of rectisol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202046881U true CN202046881U (en) | 2011-11-23 |
Family
ID=44987199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200720714U Expired - Fee Related CN202046881U (en) | 2011-03-16 | 2011-03-16 | Device for preparing high-concentration liquid SO2 with waste gas containing H2S of rectisol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202046881U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301718A (en) * | 2013-06-21 | 2013-09-18 | 邵志辉 | Device capable of recovering and concentrating sulfur dioxide in tail gas |
| CN103920371A (en) * | 2014-04-29 | 2014-07-16 | 青岛哈纳斯环保设备有限公司 | Absorption tower and flue gas treatment process thereof |
-
2011
- 2011-03-16 CN CN2011200720714U patent/CN202046881U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301718A (en) * | 2013-06-21 | 2013-09-18 | 邵志辉 | Device capable of recovering and concentrating sulfur dioxide in tail gas |
| CN103301718B (en) * | 2013-06-21 | 2016-03-02 | 邵志辉 | The device of a kind of recovery, concentrated sulfur dioxide in tail gas |
| CN103920371A (en) * | 2014-04-29 | 2014-07-16 | 青岛哈纳斯环保设备有限公司 | Absorption tower and flue gas treatment process thereof |
| CN103920371B (en) * | 2014-04-29 | 2016-09-07 | 青岛哈纳斯环保设备有限公司 | A kind of absorption tower and flue gas treating process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20140316 |