CN108726487A - A kind of burning H2S, carbon thermal reduction SO2Recycle the device and technique of Sulphur ressource - Google Patents
A kind of burning H2S, carbon thermal reduction SO2Recycle the device and technique of Sulphur ressource Download PDFInfo
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- CN108726487A CN108726487A CN201810675074.3A CN201810675074A CN108726487A CN 108726487 A CN108726487 A CN 108726487A CN 201810675074 A CN201810675074 A CN 201810675074A CN 108726487 A CN108726487 A CN 108726487A
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- gas
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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Abstract
The invention discloses a kind of burning H2S, carbon thermal reduction SO2The device and technique of Sulphur ressource are recycled, technique is：Recirculating fluidized bed carbon thermal reduction tower is provided, H is will be enriched in2S gases generate high-temperature gas by burning, and high-temperature gas is mixed with recyclegas, recirculating fluidized bed carbon thermal reduction tower are delivered to after so that hot-gas temperature is reduced, by SO under the action of carbon based reductive2Reduction forms mixed gas, mixed gas obtains cycle carbon based reductive and the gas containing sulphur by separation, gas containing sulphur obtains sulphur and lack of gas by lack of gas refrigerated separation, and a part for the lack of gas after the gas heating for containing sulphur is as recyclegas.The present invention passes through the H that burns2S obtains high concentration SO2And heat realizes SO using reaction gas round-robin method2Repeatedly while reduction conversion, inhibit new by-product to generate using sulfur byproduct species in recyclegas, realizes the high efficiente callback of sulfurous gas qualified discharge and Sulphur ressource.
Description
Technical field
The invention belongs to atmosphere pollution improvement and recycling fields, more particularly to a kind of burning H2S, carbon thermal reduction SO2
Recycle the device and technique of Sulphur ressource.
Background technology
Coal chemical industry refers to so that coal is converted into gas, liquid and solid fuel and chemistry through chemical process using coal as raw material
The process of product.Include mainly coal gasification, liquefaction, destructive distillation and tar production and carbide acetylene chemical industry etc..Petrochemical industry refer to
Oil and natural gas is raw material, produces the process of oil product and petrochemicals.Oil product is also known as oil product, includes mainly
Various fuel oil (gasoline, kerosene, diesel oil etc.) and lubricating oil and liquefied petroleum gas, oil coke, paraffin, pitch etc..Production
The first step of petrochemicals is that (such as propane, gasoline, diesel oil) gentle to feedstock oil cracks, and is generated with ethylene, third
Alkene, butadiene, the basic chemical raw materials that benzene,toluene,xylene is representative.Second step is that have so that basic chemical raw materials production is a variety of
Machine industrial chemicals (about 200 kinds) and synthetic material (plastics, synthetic fibers, synthetic rubber).Gas chemical industry is then with natural gas
The process of chemical products is generated for raw material.
In oil gas chemical industry and coal chemical industry, numerous pollutants are will produce, and H2S is main sulfurous pollutants.H2S has play
Poison stench, etching apparatus, makes the defects of catalyst poisoning, and is directly discharged to will produce acid pollution in air.H at present2S
Treatment process is based on Crouse (Claus) technique.Claus techniques used at present, need multistage catalytic reforming unit and tail
Gas disposal equipment could realize that the high efficiente callback of sulphur and the qualified discharge of tail gas, process costs are higher.But it there is no other at present
H maturation, may replace Claus techniques2S is administered and recovery technology of sulfur.
Invention content
In order to solve the deficiencies in the prior art, an object of the present invention is to provide a kind of burning H2S, carbon thermal reduction SO2It returns
The technique for receiving Sulphur ressource passes through the H that burns using the technique2S obtains high concentration SO2And heat, using reaction gas round-robin method,
Realize SO2Repeatedly while reduction conversion, inhibit new by-product to generate using sulfur byproduct species in recyclegas, realizes sulfur-bearing
The high efficiente callback of gas qualified discharge and Sulphur ressource.
To achieve the goals above, the technical scheme is that：
A kind of burning H2S, carbon thermal reduction SO2The technique for recycling Sulphur ressource, provides H2S incinerators, recirculating fluidized bed carbon heat are also
Former tower is rich in H by what is generated in oil gas chemical industry and/or coal chemical industry2S gases pass through H2S incinerators, which burn, generates 1000~1500
DEG C, contain 5~30% (quality) SO2High-temperature gas, high-temperature gas mixes with recyclegas, and hot-gas temperature is made to be reduced to
Recirculating fluidized bed carbon thermal reduction tower is delivered to after 600~1000 DEG C, in recirculating fluidized bed carbon thermal reduction tower, in carbon based reductive
Under the action of by SO2Reduction forms the mixed gas containing sulphur steam and carbon based reductive, and mixed gas is obtained by separation
Carbon based reductive and the gas containing sulphur steam are recycled, the gas containing sulphur steam obtains liquid by lack of gas refrigerated separation
Sulphur and lack of gas, a part for the lack of gas after the gas heating for containing sulphur steam is as recyclegas.
The present invention is first by H2S, which is burned, generates SO2, and using the heat of burning as heat source, addition carbon based reductive is gone back
Former SO2Sulphur is made, to realize the high efficiente callback of sulfurous gas qualified discharge and Sulphur ressource, reduces existing H2S Processing tecchnics
Complexity and cost.
The second object of the present invention is to provide a kind of device for realizing above-mentioned technique, including H2S incinerators, recirculating fluidized bed
Carbon thermal reduction tower, high-temperature separator, reheater, sulfur condenser, water vapor condenser, H2S incinerators, recirculating fluidized bed carbon heat
Reduction tower is vertically arranged, H2S incinerators bottom is equipped with mixed air vessel, H2The gaseous phase outlet of S incinerators bottom connects mixed air vessel
Top inlet, mixed air vessel outlet at bottom connection recirculating fluidized bed carbon thermal reduction tower bottom inlet, recirculating fluidized bed carbon
Heat-treat tower top exit connect high-temperature separator, high-temperature separator gaseous phase outlet connection reheater containing sulfur gas into
Mouthful, the gas vent containing sulphur of reheater connects sulfur condenser, and the gas vent of sulphur cooler connects water vapor condenser
Lack of gas import, water vapor condenser lack of gas outlet connection reheater lack of gas import, reheater lack of gas outlet connection it is weary
Gas pipeline, lack of gas pipeline open up circulating air pipeline, the side wall import of the outlet connection mixed air vessel of circulating air pipeline.
Beneficial effects of the present invention are：
A kind of burning H proposed by the present invention2S, carbon thermal reduction SO2The technique for recycling Sulphur ressource, using carbon-based material and H2S
Burn the SO containing high concentration generated2High-temperature gas be raw material, by accurately controlling carbothermic reduction reaction condition, realize H2The height of S
Effect is administered and sulphur resource utilization.In conjunction with lack of gas burning process, system waste heat recycling is realized, while treatment process process generates
Waste.Claus techniques can be replaced to realize Sulphur ressourceization recycling, have a vast market application prospect.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the device of the invention structural schematic diagram；
1.H2S incinerators, 2. lack of gas incinerators, 3. air heat exchangers, 4. recirculating fluidized bed carbon thermal reduction towers, 5. high temperature point
From device, 6. lower hoppers, 7. reheaters, 8. reaction Gas Coolers, 9. sulfur condensers, 10. sulphur storage tanks, the condensation of 11. vapor
Device, 12.SO2Removing tower, 13. dedusters, 14. chimneys.
Specific implementation mode
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Recirculating fluidized bed carbon thermal reduction tower described herein is tower circulating fluidised bed apparatus.
Carbon based reductive described herein refers to the higher sulphur carbon-based material of sulfur content, such as petroleum coke.This kind of material
Material is the by-product in oil gas chemical industry and coal chemical industry, since sulfur content is higher, should not be used as fuel, using limited, and this
Application uses this kind of material, and in carbothermic reduction process, the sulphur content in carbon-based material can also be partially converted into sulphur, and sulphur is made to return
Yield can be more than 100%.Realize the utilization to the higher sulphur carbon-based material of the sulfur content such as petroleum coke.
As background technology is introduced, existing processing H exists in the prior art2Complex process, the cost of S are higher etc.
Deficiency, in order to solve technical problem as above, present applicant proposes a kind of burning H2S, carbon thermal reduction SO2Recycle the dress of Sulphur ressource
It sets and technique.
A kind of exemplary embodiment of the application provides a kind of burning H2S, carbon thermal reduction SO2Recycle the work of Sulphur ressource
Skill provides H2S incinerators, recirculating fluidized bed carbon thermal reduction tower are rich in H by what is generated in oil gas chemical industry and/or coal chemical industry2S gases
By H2S incinerators, which burn, to be generated 1000~1500 DEG C, contains 5~30% (quality) SO2High-temperature gas, high-temperature gas with cycle
Gas mixing is delivered to recirculating fluidized bed carbon thermal reduction tower, in recycle stream after so that hot-gas temperature is reduced to 600~1000 DEG C
Change in bed carbon thermal reduction tower, by SO under the action of carbon based reductive2Reduction is formed containing sulphur steam and carbon based reductive
Mixed gas, mixed gas obtain cycle carbon based reductive and the gas containing sulphur steam by separation, contain sulphur steam
Gas obtain liquid-state sulfur and lack of gas by lack of gas refrigerated separation, the lack of gas after the gas heating containing sulphur steam
A part is used as recyclegas.
The application is first by H2S, which is burned, generates SO2, and using the heat of burning as heat source, addition carbon based reductive is gone back
Former SO2Sulphur is made, to realize the high efficiente callback of sulfurous gas qualified discharge and Sulphur ressource, reduces existing H2S Processing tecchnics
Complexity and cost.
Preferably, a part for the lack of gas after the gas heating containing sulphur steam will be adjusted as gas is adjusted
Gas is delivered in recirculating fluidized bed carbon thermal reduction tower.Due to containing remaining sulfur byproduct species (H in lack of gas2S、COS、CS2
Deng), the sulfur byproduct species of Ta Neixin can be inhibited to generate.
Preferably, lack of gas incinerator is provided, a part of conduct of the lack of gas after the gas heating containing sulphur steam
Gas is conveyed, delivers gases into lack of gas incinerator and is burned.
It is further preferred that lack of gas incinerator bottom is equipped with air heat exchanger, the flue gas of the generation in incinerator is made
Air is preheated in air heat exchanger for heat source, the air after preheating, a part enters H2S incinerators, another part into
Enter lack of gas incinerator.Still more preferably, the flue gas after air heat exchanger discharges after desulfurization and dedusting.
It is further preferred that the cycle carbon based reductive that mixed gas is obtained by separation, a part and conveying gas are mixed
Enter in lack of gas incinerator after conjunction and is burned.
Preferably, the cycle carbon based reductive that mixed gas is obtained by separation, after a part is mixed with carbon based reductive
SO is restored into recirculating fluidized bed carbon thermal reduction tower2。
Preferably, the 60 μm~5mm of carbon based reductive grain size.
Preferably, gas containing sulphur steam after lack of gas refrigerated separation obtains liquid-state sulfur and lack of gas, sulphur
Temperature is 120~160 DEG C, and the temperature of lack of gas is 130~180 DEG C.
Preferably, the temperature of the lack of gas after the gas heating containing sulphur steam is 300~600 DEG C.
Preferably, the gas containing sulphur steam is cooled down using 50~90 DEG C of lack of gas.Lack of gas liter after cooling
Temperature is to 300~600 DEG C.
The H2The pyroreaction gas that S burns outlet of still is N2、SO2、H2The mixture of O etc..The lack of gas are N2、SO2、
COS、H2S、CS2、CO、H2、CO2And H2The mixture of O etc..
The another embodiment of the application provides a kind of device for realizing above-mentioned technique, including H2S incinerators follow
Ring fluid bed carbon thermal reduction tower, high-temperature separator, reheater, sulfur condenser, water vapor condenser, H2S incinerators, recycle stream
Change bed carbon thermal reduction tower to be vertically arranged, H2S incinerators bottom is equipped with mixed air vessel, H2The gaseous phase outlet of S incinerators bottom connects
The top inlet of mixed air vessel, the bottom inlet of the outlet at bottom connection recirculating fluidized bed carbon thermal reduction tower of mixed air vessel, cycle
The top exit of fluid bed carbon thermal reduction tower connects high-temperature separator, the sulfur-bearing of the gaseous phase outlet connection reheater of high-temperature separator
The gas vent containing sulphur of sulphur gas feed, reheater connects sulfur condenser, and the gas vent connection water of sulphur cooler steams
The lack of gas import of gas condenser, the lack of gas import of the lack of gas outlet connection reheater of water vapor condenser, the lack of gas of reheater go out
Mouth connection lack of gas pipeline, lack of gas pipeline open up circulating air pipeline, the side wall import of the outlet connection mixed air vessel of circulating air pipeline.
Preferably, lack of gas pipeline opens up adjusting gas pipeline, and the outlet for adjusting gas pipeline is connected to recirculating fluidized bed carbon heat also
The side wall gas phase import of former tower.It is further preferred that the side wall import of recirculating fluidized bed carbon thermal reduction tower by setting 3 on lower~
7.
Preferably, including lack of gas incinerator, lack of gas pipeline open up conveying gas pipeline, convey the outlet connection lack of gas of gas pipeline
The fuel inlet of incinerator.
It is further preferred that lack of gas incinerator bottom be equipped with air heat exchanger, the exhanst gas outlet of lack of gas incinerator with
The gas inlet of air heat exchanger connects, the air outlet slit of air heat exchanger be separately connected lack of gas incinerator air intlet and
H2The air intlet of S incinerators.Still more preferably, the exhanst gas outlet of air heat exchanger is sequentially connected SO2Removing tower, dedusting
Device.
It is further preferred that the cycle carbon based reductive outlet of high-temperature separator is connected to conveying gas pipeline.
Preferably, the cycle carbon based reductive outlet of high-temperature separator is connected to the carbon-based of recirculating fluidized bed carbon thermal reduction tower
Reducing agent entrance.
Preferably, recirculating fluidized bed carbon thermal reduction tower bottom is equipped with Venturi tube, H2S incinerators burn high-temperature gas into
Enter and enters in recirculating fluidized bed carbon thermal reduction tower by Venturi tube.
Preferably, it is equipped between reheater and sulfur condenser and reacts Gas Cooler.
A kind of preferred burning H of the application2S, carbon thermal reduction SO2Sulphur ressource device is recycled by H2S incinerators, lack of gas are burned
Stove and its back-end surfaces, carbon thermal reduction device, the reaction compositions such as air cooling and sulfur recovery facility, exhaust gas cleaner.Its
It is characterized in that, H2S incinerators pass through the H that burns2S is allowed to be converted into the high SO of high temperature2The reaction gas of concentration.Lack of gas incinerator and its
Back-end surfaces are made of burner, incinerator body, air heater, are sequentially arranged by upstream to downstream, air heater
For gas-gas heat exchanger.Carbon thermal reduction device is by fluid bed carbon thermal reduction tower, high-temperature separator, lower hopper and correlative pipeline etc.
Composition.Venturi tube is arranged in carbon thermal reduction tower body lower part, and from bottom to top 3~7 puff prots are arranged along journey in tower body.High-temperature separator
It is refeed line between carbon thermal reduction tower body.Refeed line upstream arrangement scum pipe, arranged downstream lower hopper and feed pipe, feed pipe
It is all provided with lock gas batcher with scum pipe.Air cooling and sulfur recovery facility are reacted by reheater, reaction Gas Cooler, sulphur condensation
The compositions such as device and sulphur storage tank, are from top to bottom sequentially arranged.Reheater is gas-gas heat exchanger, reacts Gas Cooler and sulphur condensation
Device is gas-liquid heat-exchange.Water vapor condenser is arranged in sulfur condenser gas outlet.Exhaust gas cleaner is by SO2Removing tower,
The compositions such as deduster and chimney, are sequentially arranged from tail gas upstream to downstream.The sour gas removing tower is that recirculating fluidized bed is half-dried
Method desulfurizing tower, the deduster are sack cleaner.
Air leads to air heater by air-introduced machine, divides two-way later, provides H respectively2S incinerators and lack of gas incinerator
Combustion air；Flue is drawn by lack of gas incinerator, and flue gas is via back-end surfaces, SO2Removing tower, deduster, pass through
Air-introduced machine leads to chimney and is discharged into air.Reaction feed channel drawn by carbon thermal reduction tower, reaction gas successively via high-temperature separator, again
Hot device cold side, sulfur condenser, water vapor condenser lead to reheater heated side by air-introduced machine.Reheater heated side goes out
Mouth pipeline is divided into three tunnels：Conveying feed channel is connect with scum pipe, carries the carbon based reductive for losing reactivity of discharge, via
Venturi tube leads to lack of gas incinerator；It adjusts feed channel and leads to carbon thermal reduction tower puff prot；Circulating air pipeline is in H2S incinerators
After be blended into, hybrid reaction gas leads to carbon thermal reduction tower bottom via Venturi tube and hybrid reaction hot-air heater.Vapor condenses
Condensed water sprays into SO by water pump in device2Removing tower.Air water pipeline is respectively provided with flow control valve.
It is according to the realization technique of preferred embodiment：
(1)H2S is in H2It burns in S incinerators, generates 1000~1500 DEG C, SO2The high-temperature reacting gas of concentration 2~13%,
600~1000 DEG C are reduced to temperature after circulating air mix and convert, enters carbon thermal reduction tower later.
(2) lack of gas and discarded carbon based reductive burn in lack of gas incinerator, 1000~1500 DEG C of exit gas temperature,
Brief introduction heat exchange is carried out with normal temperature air in air heater, finally passes through SO2By cigarette after removing tower and bag filter purification
Chimney discharges.Air is heated to 200~500 DEG C wherein in air heater, as H2S incinerators and lack of gas incinerator are combustion-supporting
It uses.
(3) fluid bed carbon thermal reduction tower is SO2It is reduced to the reacting environment of sulphur by C, 600~1000 DEG C of reaction temperature,
C/SO2Molar ratio 10~100,4~8 meters of gas velocity in tower, 2~12s of gas-solid contact time in tower.The adjusting that 300~600 DEG C of temperature
Qi leel section enters carbon thermal reduction tower, temperature and gas velocity in adjusting tower.
(4) reaction gas initially enters high-temperature separator after leaving reduction tower, and the carbon based reductive of separation largely returns also
Reaction is continued to participate in former tower, the carbon based reductive for partly losing reactivity is discharged without returning again to reduction tower.It is gone back with carbon-based
The gas of former agent separation is cooled to 130~150 DEG C after reheater, reaction Gas Cooler cooling in sulfur recovery facility,
Sulphur becomes liquid from gaseous state, flows into the storage of sulphur storage tank.Leave sulfur recovery facility lack of gas be cooled further to 100 DEG C with
Under, condense moisture in lack of gas.Condensed water sprays into acid gas removal tower together with the sour gas being dissolved in water.Remove moisture
Lack of gas enter after reheater is heated to 300~600 DEG C, divide circulating air, adjust gas and three tunnel of conveying gas, wherein conveying gas
It carries carbon thermal reduction combustible byproducts and restores the carbon based reductive of tower discharge, burn into incinerator, eliminate intractable pair
Product, and release energy, reduce outside energy input；It circulating air and adjusts qi leel and does not press step (1) (3) the entrance carbon heat also
Former tower.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The technical solution of the application is described in detail in the embodiment of body.
Embodiment 1
As shown in Figure 1, H2The furnace body of S incinerators 1 is set up vertically, and gas burner, high concentration H is arranged in top2S gas streams
Through H2Abundant burning conversion is SO after the burner hearth of S incinerators 12, recirculating fluidized bed carbon is led to by hybrid reaction feed channel later
Heat-treat tower 4.High-temperature separator 5, reheater 7, reaction air cooling are passed through in gas flowing in recirculating fluidized bed carbon thermal reduction tower 4
Device 8 and sulfur recovery facility 9 three groups of heat exchanger heat-exchanging tube roads inner space, vapor cooler inner space and reheater shell
Space between heat exchange pipeline provides conveying power by air-introduced machine.It is divided into three road gas pipelines later：Gas is conveyed by literary mound
In lack of gas incinerator 2 is entered by burner after pipe；It adjusts gas and is segmented by fluid bed carbon thermal reduction tower air inlet and entered in reduction tower；
Circulating air is in H21 tail portion of S incinerators and H2Enter recirculating fluidized bed carbon thermal reduction tower 4 after gas mixing after S burnings.Newly plus
Petroleum coke particles enter recirculating fluidized bed carbon thermal reduction tower 4 by 4 top lock gas batcher of moving bed reduction tower, from top to bottom slowly
It is mobile, after petroleum coke cooler 5, by the 4 lower section lock gas batcher discharge of moving bed reduction tower.The furnace body of lack of gas incinerator 2
It sets up vertically, gas burner is arranged in top, and the lack of gas after reaction handle in the stove chamber inner combustion of lack of gas incinerator 2 and release heat
Amount, the flue gas that lack of gas incinerator 2 exports are drawn by flue after exchanging heat with surrounding air in air heat exchanger 3, are passed through successively
Cross SO2After removing tower 12 and deduster 13 purify, air is discharged by chimney 14.Air provides conveying power by air-introduced machine, in sky
The air heated in hot-air heater 3 is respectively led into H by high temperature air pipeline2The burning of S incinerators 1 and lack of gas incinerator 2
Device.
Interior gas chamber is arranged in two ring-shaped air chambers, tower body centre to the outside setting of 4 tower body of recirculating fluidized bed carbon thermal reduction tower up and down,
It is petroleum coke particles layer between inside and outside gas chamber, insulating layer is set on the outside of tower body.
High-temperature separator 6 be cyclone separator, axis stream separator, ceramic filter drum filter or a variety of separators combination shape
Formula.
Including sulphur storage tank 10,9 inner condensat liquid state sulphur of sulfur condenser flows into sulphur storage tank 10 and stores.
Including water vapor condenser 11, condensed water sprays into SO by water pump in water vapor condenser 112Removing tower 12.
Its technique used for：Used petroleum coke grain size is 2~5mm, sulfur content 4.5~5.5%.
One, H2The H of 60~80% concentration is burned in S incinerators2S gases generate 1000~1200 DEG C of high-temperature gases, SO2
A concentration of 8~10%, and 300-600 DEG C of circulating air of temperature, according to mark condition volume ratio 1:650~900 DEG C of temperature after 1 mixing.
Two, hybrid reaction gas enters moving bed reduction tower, and the reaction time is 3~5s, 700~900 DEG C of reaction temperature, SO2
Conversion ratio and sulphur yield are respectively 90~98% and 90~98%, participate in the petroleum coke sulfur content after reaction be reduced to 2~
3.5%.
Three, after lack of gas detach dust, then the cooling of reheated device by high-temperature filter, by sulfur condenser condensing recovery sulphur
Sulphur.Recovered sulphur purity reaches 99.8% or more, meets industrial sulphur Grade A standard.
Four, lack of gas incinerator smoke is purified by circulating fluid bed semi-drying method desulfurizing tower and bag filter, bag-type dust
Device exports SO2Concentration is less than 30mg/Nm3, dust is less than 5mg/Nm3。
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of burning H2S, carbon thermal reduction SO2The technique for recycling Sulphur ressource, characterized in that H is provided2It is S incinerators, ciculation fluidized
Bed carbon thermal reduction tower is rich in H by what is generated in oil gas chemical industry and/or coal chemical industry2S gases pass through H2S incinerators, which burn, generates 1000
~1500 DEG C, contain 5~30% (quality) SO2High-temperature gas, high-temperature gas mixes with recyclegas, and hot-gas temperature is made to drop
It is delivered to recirculating fluidized bed carbon thermal reduction tower after down to 600~1000 DEG C, in recirculating fluidized bed carbon thermal reduction tower, is gone back carbon-based
By SO under the action of former agent2Reduction forms the mixed gas containing sulphur steam and carbon based reductive, and mixed gas is by separation
Cycle carbon based reductive and the gas containing sulphur steam are obtained, the gas containing sulphur steam is obtained by lack of gas refrigerated separation
Liquid-state sulfur and lack of gas, a part for the lack of gas after the gas heating for containing sulphur steam is as recyclegas.
2. technique as shown in claim 1, characterized in that a part for the lack of gas after the gas heating containing sulphur is made
To adjust gas, gas will be adjusted and be delivered in recirculating fluidized bed carbon thermal reduction tower.
3. technique as shown in claim 1, characterized in that provide lack of gas incinerator, add by the gas containing sulphur steam
A part for lack of gas after heat is delivered gases into lack of gas incinerator and is burned as conveying gas；
Preferably, lack of gas incinerator bottom is equipped with air heat exchanger, and the flue gas of the generation in incinerator is as heat source in sky
Gas heat exchanger preheats air, the air after preheating, and a part enters H2S incinerators, another part enter lack of gas burning
Stove；
Preferably, enter after the cycle carbon based reductive that mixed gas is obtained by separation, a part and conveying gas mixing weary
It is burned in gas incinerator.
4. technique as shown in claim 1, characterized in that the cycle carbon based reductive that mixed gas is obtained by separation, one
Part enters recirculating fluidized bed carbon thermal reduction tower after being mixed with carbon based reductive and restores SO2。
5. technique as shown in claim 1, characterized in that the gas containing sulphur steam obtains liquid by lack of gas refrigerated separation
After state sulphur and lack of gas, the temperature of sulphur is 120~150 DEG C, and the temperature of lack of gas is 130~180 DEG C；
Or, the temperature of the lack of gas after the gas heating containing sulphur steam is 300~600 DEG C；
Or, the lack of gas using 50~90 DEG C cool down the gas containing sulphur steam.
6. a kind of device for realizing any technique of Claims 1 to 5, characterized in that including H2S incinerators, recirculating fluidized bed
Carbon thermal reduction tower, high-temperature separator, reheater, sulfur condenser, water vapor condenser, H2S incinerators, recirculating fluidized bed carbon heat
Reduction tower is vertically arranged, H2S incinerators bottom is equipped with mixed air vessel, H2The gaseous phase outlet of S incinerators bottom connects mixed air vessel
Top inlet, mixed air vessel outlet at bottom connection recirculating fluidized bed carbon thermal reduction tower bottom inlet, recirculating fluidized bed carbon
Heat-treat tower top exit connect high-temperature separator, high-temperature separator gaseous phase outlet connection reheater containing sulfur gas into
Mouthful, the gas vent containing sulphur of reheater connects sulfur condenser, and the gas vent of sulphur cooler connects water vapor condenser
Lack of gas import, water vapor condenser lack of gas outlet connection reheater lack of gas import, reheater lack of gas outlet connection it is weary
Gas pipeline, lack of gas pipeline open up circulating air pipeline, the side wall import of the outlet connection mixed air vessel of circulating air pipeline.
7. device as claimed in claim 6, characterized in that lack of gas pipeline opens up adjusting gas pipeline, adjusts the outlet of gas pipeline
It is connected to the side wall gas phase import of recirculating fluidized bed carbon thermal reduction tower.
8. device as claimed in claim 6, characterized in that including lack of gas incinerator, lack of gas pipeline opens up conveying gas pipeline, defeated
Supply gas pipeline outlet connection lack of gas incinerator fuel inlet；
Preferably, lack of gas incinerator bottom is equipped with air heat exchanger, the exhanst gas outlet and air heat exchanger of lack of gas incinerator
Gas inlet connection, the air outlet slit of air heat exchanger is separately connected the air intlet and H of lack of gas incinerator2S incinerators
Air intlet；
Preferably, the cycle carbon based reductive outlet of high-temperature separator is connected to conveying gas pipeline.
9. device as claimed in claim 6, characterized in that the cycle carbon based reductive outlet of high-temperature separator is connected to cycle
The carbon based reductive entrance of fluid bed carbon thermal reduction tower.
10. device as claimed in claim 6, characterized in that recirculating fluidized bed carbon thermal reduction tower bottom is equipped with Venturi tube, H2S
The high-temperature gas that incinerator burns passes into Venturi tube and enters in recirculating fluidized bed carbon thermal reduction tower；
Or, being equipped with cooler of reactor between reheater and sulfur condenser.
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| CN108726487B (en) | 2020-08-04 |
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