CN105695655A - System and method for preparing clean gas base vertical furnace reducing gas through coal gasification - Google Patents
System and method for preparing clean gas base vertical furnace reducing gas through coal gasification Download PDFInfo
- Publication number
- CN105695655A CN105695655A CN201610222123.9A CN201610222123A CN105695655A CN 105695655 A CN105695655 A CN 105695655A CN 201610222123 A CN201610222123 A CN 201610222123A CN 105695655 A CN105695655 A CN 105695655A
- Authority
- CN
- China
- Prior art keywords
- gas
- outlet
- electrolysis
- inlet
- oxygen
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/74—Construction of shells or jackets
- C10J3/76—Water jackets; Steam boiler-jackets
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0073—Selection or treatment of the reducing gases
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/50—Combinations of absorbents
- B01D2252/504—Mixtures of two or more absorbents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
Abstract
The invention relates to a system for preparing clean gas base vertical furnace reducing gas through coal gasification. The system comprises a coal gasification unit, a desulfurization unit and electrolysis equipment; a gas outlet of the coal gasification unit is connected to a gas inlet of the desulfurization unit; a gas outlet of the desulfurization unit and a hydrogen outlet of the electrolysis equipment are both connected to an intake pipe of the gas base vertical furnace reducing gas; a liquid outlet of the desulfurization unit is connected to a liquid inlet of the electrolysis equipment; and a liquid outlet of the electrolysis equipment is reversely connected to a liquid inlet of the desulfurization unit. The system adopts an absorbing agent electrolytic regeneration method to realize recycling of an absorbing agent; meanwhile, hydrogen generated through electrolysis can adjust an H2/CO ratio of reducing gas, so that the reducing gas achieves the requirement of the gas base vertical furnace reducing gas; and oxygen generated through electrolysis can further serve as an oxygen source of the coal gasification. In addition, the cost of the hydrogen obtained by the method is lower.
Description
Technical field
The present invention relates to the system and method for the clean gas-based shaft kiln reducing gases of a kind of coal gasification preparation, relate to reducing gases and prepare field of purification。
Background technology
The resources characteristic of China is many coals, few oil, few natural gas, and the coal gas therefore obtained using coal for the energy with coke-stove gas, coal gas etc. is the inevitable choice of China's Shaft Furnace Direct Reduction Process development as reducing gases。In the coking and gasification of coal, the sulfur in coal is mainly with H2The form of S enters gas phase so that coke-stove gas and all contain substantial amounts of H in coal gas2S, all needing after desulfurization could be further with, otherwise can affect the quality of shaft kiln directly reduced product sponge iron。
For the elimination of hydrogen sulfide, reported processing method is a lot, and these methods are broadly divided into two big classes: dry-desulphurizer sulfur removal technology and wet desulphurization agent sulfur removal technology。Elimination H2S both can environment purification, again recyclable sulfur, therefore, research and develop efficient removal H2S new technique, has great importance to environmental conservation。The removing sulfuldioxide of hydrogen sulfide, through the development of decades, has been achieved for a lot of achievement。Increasingly strict along with environmental regulation, input efficient, low, resource, non-secondary pollution technology just day by day cause the attention of people, for instance the emerging sulfur methods such as microbial decomposition method, Ozonation, electrochemical process, microwave method。
At present, equipment is simple, small investment, mild condition, desulfuration efficiency are high owing to having for Electrochemistry Desulfurization method, environment does not have the advantages such as secondary pollution, it has also become the focus of Recent study。Electrochemical process elimination hydrogen sulfide is used to have following superiority: (1) electrochemical apparatus is simple, investment, it is not necessary to original equipment is carried out bigger transformation；(2) Operation and Maintenance is simple, can use continuously for a long time, practicable unattended, easily regulate；(3) physics and chemistry affect to system are less, have no side effect。
Preparing in the actual production of sponge iron at reduction shaft furnace, any shaft furnace process all must use hydrogen-rich gas also original production sponge iron。Owing to CO reduction process is exothermic reaction, hydrogen reducing reaction is the endothermic reaction。If CO too high levels in reducing gases, the thermal accumlation that Local C O reduction exothermic reaction produces is likely to the temperature making local furnace charge more than 950 DEG C, causes local furnace charge softening to lump。It addition, in be higher than the process of reducing gases also original production sponge iron of 33% containing CO, 400 DEG C～700 DEG C heating and cooling process can occur serious analysis carbon, have a strong impact on shaft furnace and the trouble-free operation of reducing gases heating furnace。And, under long term high temperature environment, CO can corrode furnace tubing, is locally generated lamellar Fe3C, irregularly comes off, and of a specified duration is easy for occurring the serious accident of boiler tube gas leak。In CO reduction process, pellet is easily generated the phenomenons such as expansion, fragmentation, and during with hydrogen reducing, these phenomenons are almost without occurring。It addition, the reduction rate of hydrogen is significantly larger than the reduction rate of CO。Therefore, use hydrogen-rich gas to produce the stable operation that sponge iron is more beneficial for producing, reduce operating cost and process energy consumption。
Summary of the invention
It is an object of the invention to provide a kind of system by the clean gas-based shaft kiln reducing gases of coal gasification preparation。
System of the present invention, including coal gasification unit, desulfurization unit and electrolysis installation；The gas outlet of described coal gasification unit is connected to the air inlet of described desulfurization unit, and the gas outlet of described desulfurization unit and the hydrogen outlet of described electrolysis installation are commonly connected to the admission line of gas-based shaft kiln reducing gases；
The liquid outlet of described desulfurization unit is connected to the inlet of described electrolysis installation, the inlet of the liquid outlet Opposite direction connection of described electrolysis installation extremely described desulfurization unit。
System of the present invention, the oxygen outlet of described electrolysis installation is connected to the air inlet of described coal gasification unit。
System of the present invention, described desulfurization unit includes absorption tower and subsider, and the tower body on described absorption tower is provided with air inlet, gas outlet, inlet and liquid outlet, and described gas outlet is positioned at the top of inlet, and described inlet is positioned at the top of air inlet；The top of described subsider is provided with inlet and liquid outlet, and bottom is provided with elemental sulfur outlet；The liquid outlet on described absorption tower is connected to the inlet of described subsider, and the liquid outlet of described subsider is connected to the inlet of electrolysis installation。
System of the present invention, described coal gasification unit includes gasification furnace and is positioned at the shock chamber bottom described gasification furnace and cooling tower；The down-comer of described gasification furnace leads in the cooling chamber of described shock chamber；The gas outlet of described shock chamber is connected with described cooling tower, and the gas outlet of described cooling tower is connected to the air inlet of described desulfurization unit；
The top of described shock chamber is provided with cooling water inlet and gas outlet, is connected with lime-ash outlet；
Described gasification furnace is water-cooling wall airflow bed gasification furnace。
System of the present invention, described electrolysis installation is electrolysis bath, and the anode of described electrolysis bath selects graphite electrode or metal electrode；The material of described graphite electrode is graphite cake or carbon cloth, and the material of described metal electrode is lead, titanium, ruthenium or corrosion resistant metal alloy electrodes；Negative electrode is platinum electrode, platinum plating graphite electrode or stainless steel electrode；Described electrolysis bath is divided into anode chamber and cathode chamber by barrier film, and described barrier film is ion exchange membrane。
Described electrolysis bath is preferably: the anode of electrolysis bath selects graphite electrode；Negative electrode is platinum plating graphite electrode；Described electrolysis bath is divided into anode chamber and cathode chamber by barrier film, and described barrier film is cation exchange membrane。
System of the present invention, the absorbent in described desulfurization unit is Fe3+The mixed solution of acid of halogen saline solution and corresponding halogen, the pH of described solution is 4～7。
It is a further object of the present invention to provide the method utilizing the clean gas-based shaft kiln reducing gases of system of the present invention preparation, comprise the steps:
1) feed coal carries out gasification reaction with gasifying agent after crushed, obtains raw gas；
Particle diameter after described coal dust is broken is 10 μm～90 μm, and described gasifying agent is steam and the mixture of oxygen, oxygen-enriched air or oxygen, and wherein the content of oxygen is 35%～100%；
2) by described raw gas by absorbent, remove hydrogen sulfide therein, obtain purified gas；Described absorbent is Fe3+The mixed solution of acid of halogen saline solution and corresponding halogen, wherein Fe3+Concentration be 0.5～1mol/L, pH be 4～7；
3) hydrogen that described purified gas is prepared with described electrolysis installation mixes, and obtains H2/ CO is the gas-based shaft kiln hydrogen-rich reducing gases of 0.7～2.0。
Method of the present invention, absorbs and has the absorbent of hydrogen sulfide to pass into described electrolysis installation, retrieve absorbent, be fed again in absorption tower and be circulated use after electrolysis installation Regeneration Treatment。
Method of the present invention, electrolysis installation is prepared in the process of hydrogen, also produces by-product oxygen, and described oxygen is as the oxygen sources in gasifying agent。
Method of the present invention, described electrolysis installation is electrolysis bath, and the electric current density of described electrolysis bath is 5～20mA/cm2；Electrolysis bath is divided into anode chamber and cathode chamber, the Fe in anode-side acid solution by ion exchange membrane2+Oxidation reaction is occurred to generate Fe3+, the H of anode-side+Enter cathode side generation reduction reaction by ion exchange membrane and obtain high-purity H2。Solution is regenerated as former Fe3+The acidic mixed solution of solution, it is possible to be re-used as the absorbent of elimination hydrogen sulfide, be circulated use。
Method of the present invention, the temperature that passes into of described raw gas is 40～80 DEG C, and the speed that passes into of described raw gas is 5～18m/s, and the spray rate of described absorbent is 1.5～4 × 103m3/h。
Method of the present invention, the temperature that passes into of described raw gas is 40～80 DEG C, and the speed that passes into of described raw gas is 5～18m/s, and the spray rate of described absorbent is 1.5～4 × 103m3/h。
(3) beneficial effect
System of the present invention has the advantages that
1) by introducing electrolysis installation, the H that yield is controlled can be prepared2, gained H2H after mixing with coal gas, in scalable purified gas2/ CO ratio, obtains meeting the reducing gases of gas-based shaft kiln instructions for use。(H2/CO≥0.7)
2) coal gas of the present invention adopts electrolytic regeneration absorbent method in sweetening process, it may be achieved recycling of absorbent, to environment non-secondary pollution；And absorb and in regenerative process, the sulfur that obtains and hydrogen are the product that added value is higher。Relative additive method, the hydrogen cost that this method obtains is comparatively cheap。Improve resource utilization, reduce operation cost。
3) present invention is in the process of absorbent electrolytic regeneration, is also accompanied by part H2The oxidized generation by-product oxygen of O, this partial oxidation can serve as coal gasification gasifying agent, participates in coal gasification reaction, reduces air compression station load, reduces operation cost。
4) raw sorbent used by the present invention is simple and easy to get, cheap, it is easy to accomplish the recycling in later stage, also can obtain elemental sulfur。
Accompanying drawing explanation
Fig. 1 is the system schematic of the clean gas-based shaft kiln reducing gases of coal gasification preparation
In figure: 1, gasification furnace；2, chilling room；3, absorption tower；4, subsider；5, electrolysis bath；6, cooling tower。
Detailed description of the invention
Following example are used for illustrating the present invention, but are not limited to the scope of the present invention。
Embodiment 1
The present embodiment relates to the system of the clean gas-based shaft kiln reducing gases of coal gasification of the present invention preparation:
Including coal gasification unit, desulfurization unit and electrolysis installation；The gas outlet of described coal gasification unit is connected to the air inlet of described desulfurization unit, and the gas outlet of described desulfurization unit and the hydrogen outlet of described electrolysis installation are commonly connected to the admission line of gas-based shaft kiln reducing gases；
The liquid outlet of described desulfurization unit is connected to the inlet of described electrolysis installation, the inlet of the liquid outlet Opposite direction connection of described electrolysis installation extremely described desulfurization unit。
The oxygen outlet of described electrolysis installation is connected to the air inlet of described coal gasification unit。
Embodiment 2
The present embodiment relates to the system of the clean gas-based shaft kiln reducing gases of coal gasification of the present invention preparation, its structural representation such as Fig. 1:
Comparing with embodiment 1, it is distinctive in that,
Described electrolysis installation is electrolysis bath 5, and the anode material of described electrolysis bath is graphite electrode, and cathode material is platinum plating graphite electrode, and barrier film is cation exchange membrane。
Described desulfurization unit includes absorption tower 3 and subsider 4, and the tower body on described absorption tower 3 is provided with air inlet, gas outlet, inlet and liquid outlet, and described gas outlet is positioned at the top of inlet, and described inlet is positioned at the top of air inlet；
The top of described subsider 4 is provided with inlet and liquid outlet, and bottom is provided with elemental sulfur outlet；The liquid outlet on described absorption tower is connected to the inlet of described subsider, and the liquid outlet of described subsider is connected to the inlet of electrolysis bath 4。
Embodiment 3
The present embodiment relates to the system of the clean gas-based shaft kiln reducing gases of coal gasification of the present invention preparation:
Comparing with embodiment 2, it is distinctive in that, described coal gasification unit includes gasification furnace 1 and is positioned at the shock chamber 2 bottom described gasification furnace and cooling tower 6, and the top of described shock chamber is provided with cooling water inlet and gas outlet, is connected with lime-ash outlet；The down-comer of described gasification furnace 1 leads in the cooling chamber of described shock chamber 2；The gas outlet of described shock chamber is connected to described cooling tower 6, and the gas outlet of described cooling tower 6 is connected to the air inlet on described absorption tower 3。
Embodiment 4
The present embodiment relates to a kind of method preparing gas-based shaft kiln reducing gases, comprises the steps:
1) feed coal carries out gasification reaction with gasifying agent after crushed, obtains raw gas；
Particle diameter after described coal dust is broken is 10 μm, and described gasifying agent is the mixture of steam and oxygen, and wherein the content of oxygen is 35%；
2) by described raw gas by absorbent, remove hydrogen sulfide therein, obtain purified gas；Described absorbent is pH value is the FeCl of 4.83With the mixed solution of HCl, the temperature that passes into of described raw gas is 40 DEG C, and the speed that passes into of described raw gas is 5m/s, and the spray rate of described absorbent is 1.5 × 103m3/ h。；
3) hydrogen that described purified gas is prepared with described electrolysis installation mixes, and obtains H2/ CO is the gas-based shaft kiln hydrogen-rich reducing gases of 1.2；Described electrolysis installation is electrolysis bath, and the electric current density of described electrolysis bath is 5mA/cm2；Absorbing has the absorbent of hydrogen sulfide to pass into described electrolysis bath, retrieves absorbent, be circulated use after electrolysis bath processes；Also producing oxygen in the process of electrolytic tank electrolysis, described oxygen is as the oxygen sources in gasifying agent。
In the present embodiment, H2The absorbance of S is 98%。
Embodiment 5
The present embodiment relates to the use of the method that the system described in embodiment 3 prepares gas-based shaft kiln reducing gases, comprises the steps:
1) feed coal carries out gasification reaction with gasifying agent after crushed, obtains raw gas；
Particle diameter after described coal dust is broken is 90 μm, and described gasifying agent is oxygen；
2) by described raw gas by absorbent, remove hydrogen sulfide therein, obtain purified gas；Described absorbent is pH value is the FeBr of 63With the mixed solution of HBr, the temperature that passes into of described raw gas is 80 DEG C, and the speed that passes into of described raw gas is 18m/s, and the spray rate of described absorbent is 4 × 103m3/ h。；
3) hydrogen that described purified gas is prepared with described electrolysis installation mixes, and obtains H2/ CO is the gas-based shaft kiln hydrogen-rich reducing gases of 2.0；Described electrolysis installation is electrolysis bath, and the electric current density of described electrolysis bath is 20mA/cm2；Absorbing has the absorbent of hydrogen sulfide to pass into described electrolysis bath, retrieves absorbent, be circulated use after electrolysis bath processes；Also producing oxygen in the process of electrolytic tank electrolysis, described oxygen is as the oxygen sources in gasifying agent。
In the present embodiment, H2The absorbance of S is 99%。
Although, above use generality explanation, detailed description of the invention and test, the present invention is described in detail, but on basis of the present invention, it is possible to it is made some modifications or improvements, and this will be apparent to those skilled in the art。Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention。
Claims (10)
1. the system by the clean gas-based shaft kiln reducing gases of coal gasification preparation, it is characterised in that include coal gasification unit, desulfurization unit and electrolysis installation；The gas outlet of described coal gasification unit is connected to the air inlet of described desulfurization unit, and the gas outlet of described desulfurization unit and the hydrogen outlet of described electrolysis installation are commonly connected to the admission line of gas-based shaft kiln reducing gases；
The liquid outlet of described desulfurization unit is connected to the inlet of described electrolysis installation, the inlet of the liquid outlet Opposite direction connection of described electrolysis installation extremely described desulfurization unit。
2. system according to claim 1, it is characterised in that the oxygen outlet of described electrolysis installation is connected to the air inlet of described coal gasification unit。
3. system according to claim 1 and 2, it is characterized in that, described desulfurization unit includes absorption tower and subsider, and the tower body on described absorption tower is provided with air inlet, gas outlet, inlet and liquid outlet, described gas outlet is positioned at the top of inlet, and described inlet is positioned at the top of air inlet；The top of described subsider is provided with inlet and liquid outlet, and bottom is provided with elemental sulfur outlet；The liquid outlet on described absorption tower is connected to the inlet of described subsider, and the liquid outlet of described subsider is connected to the inlet of electrolysis installation。
4. the system according to any one of claims 1 to 3, it is characterised in that described coal gasification unit includes gasification furnace, cooling tower, and the shock chamber bottom described gasification furnace；The down-comer of described gasification furnace leads in the cooling chamber of described shock chamber；The gas outlet of described shock chamber is connected with described cooling tower, and the gas outlet of described cooling tower is connected to the air inlet of described desulfurization unit。
5. the system according to claim 1 or 4, it is characterised in that described electrolysis installation is electrolysis bath, the anode of described electrolysis bath selects graphite electrode or metal electrode；The material of described graphite electrode is graphite cake or carbon cloth, and the material of described metal electrode is lead, titanium, ruthenium or corrosion resistant metal alloy electrodes；Negative electrode is platinum electrode, platinum plating graphite electrode or stainless steel electrode；Described electrolysis bath is divided into anode chamber and cathode chamber by barrier film, and described barrier film is ion exchange membrane。
6. the method for the clean gas-based shaft kiln reducing gases of system preparation that a kind utilizes described in any one of claim 1～5, it is characterised in that comprise the steps:
1) feed coal carries out gasification reaction with gasifying agent after crushed, obtains raw gas；
Particle diameter after described coal dust is broken is 10 μm～90 μm, and described gasifying agent is steam and the mixture of oxygen, oxygen-enriched air or oxygen, and wherein the content of oxygen is 35%～100%；
2) by described raw gas by absorbent, remove hydrogen sulfide therein, obtain purified gas；Described absorbent is Fe3+The mixed solution of acid of halogen saline solution and corresponding halogen, wherein Fe3+Concentration be 0.5～1mol/L, pH be 4～7；
3) hydrogen that described purified gas is prepared with described electrolysis installation mixes, and obtains H2/ CO is the gas-based shaft kiln hydrogen-rich reducing gases of 0.7～2.0。
7. method according to claim 6, it is characterised in that absorb and have the absorbent of hydrogen sulfide to pass into described electrolysis installation, retrieve absorbent after electrolysis installation Regeneration Treatment, be fed again in absorption tower and be circulated use。
8. the method according to claim 6 or 7, it is characterised in that electrolysis installation is prepared in the process of hydrogen, also produces by-product oxygen, and described oxygen is as the oxygen sources in gasifying agent。
9. the method according to any one of claim 6～8, it is characterised in that described electrolysis installation is electrolysis bath, the electric current density of described electrolysis bath is 5～20mA/cm2。
10. the method according to any one of claim 6～8, it is characterised in that the temperature that passes into of described raw gas is 40～80 DEG C, the speed that passes into of described raw gas is 5～18m/s, and the spray rate of described absorbent is 1.5～4 × 103m3/h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222123.9A CN105695655A (en) | 2016-04-11 | 2016-04-11 | System and method for preparing clean gas base vertical furnace reducing gas through coal gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222123.9A CN105695655A (en) | 2016-04-11 | 2016-04-11 | System and method for preparing clean gas base vertical furnace reducing gas through coal gasification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105695655A true CN105695655A (en) | 2016-06-22 |
Family
ID=56219483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610222123.9A Pending CN105695655A (en) | 2016-04-11 | 2016-04-11 | System and method for preparing clean gas base vertical furnace reducing gas through coal gasification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105695655A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342743A (en) * | 2017-01-23 | 2018-07-31 | 中国石油化工股份有限公司 | It is electrolysed the method and device of hydrogen sulfide preparing high purity hydrogen and sulphur |
| CN110862838A (en) * | 2018-08-27 | 2020-03-06 | 襄阳中诚检测科技有限公司 | Chemical product providing system |
| CN112011375A (en) * | 2020-07-14 | 2020-12-01 | 中国人民解放军63919部队 | Extraterrestrial base solid waste and in-situ material resource integrated utilization system and method |
| CN114525518A (en) * | 2020-11-09 | 2022-05-24 | 中国石油大学(北京) | Method for utilizing renewable energy source electricity |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311054A (en) * | 2000-03-03 | 2001-09-05 | 广州舒创有限公司 | Electrolytic method for removing sulfur from gas |
| CN1637118A (en) * | 2004-12-08 | 2005-07-13 | 西北化工研究院 | Pressurized gasifying process of polynary slurry |
| CN101358258A (en) * | 2007-08-02 | 2009-02-04 | 北京神雾热能技术有限公司 | Coal reducing gas direct reduction metallurgical process in gas-based shaft kiln and system |
| CN102120134A (en) * | 2010-12-31 | 2011-07-13 | 哈尔滨工业大学 | Electrochemical treatment device and method for removing hydrogen sulfide in methane |
| CN102776044A (en) * | 2012-05-26 | 2012-11-14 | 杭州创享环境技术有限公司 | Process for desulphurizing methane through Fe-Cl mixed solution |
| CN104531221A (en) * | 2014-12-16 | 2015-04-22 | 中石化宁波工程有限公司 | Gasification furnace structure capable of treating pulverized coal and water coal slurry simultaneously |
| CN205635670U (en) * | 2016-04-11 | 2016-10-12 | 北京神雾环境能源科技集团股份有限公司 | System for clean gas of coal gasification preparation base shaft furnace is crude gas still |
-
2016
- 2016-04-11 CN CN201610222123.9A patent/CN105695655A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311054A (en) * | 2000-03-03 | 2001-09-05 | 广州舒创有限公司 | Electrolytic method for removing sulfur from gas |
| CN1637118A (en) * | 2004-12-08 | 2005-07-13 | 西北化工研究院 | Pressurized gasifying process of polynary slurry |
| CN101358258A (en) * | 2007-08-02 | 2009-02-04 | 北京神雾热能技术有限公司 | Coal reducing gas direct reduction metallurgical process in gas-based shaft kiln and system |
| CN102120134A (en) * | 2010-12-31 | 2011-07-13 | 哈尔滨工业大学 | Electrochemical treatment device and method for removing hydrogen sulfide in methane |
| CN102776044A (en) * | 2012-05-26 | 2012-11-14 | 杭州创享环境技术有限公司 | Process for desulphurizing methane through Fe-Cl mixed solution |
| CN104531221A (en) * | 2014-12-16 | 2015-04-22 | 中石化宁波工程有限公司 | Gasification furnace structure capable of treating pulverized coal and water coal slurry simultaneously |
| CN205635670U (en) * | 2016-04-11 | 2016-10-12 | 北京神雾环境能源科技集团股份有限公司 | System for clean gas of coal gasification preparation base shaft furnace is crude gas still |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342743A (en) * | 2017-01-23 | 2018-07-31 | 中国石油化工股份有限公司 | It is electrolysed the method and device of hydrogen sulfide preparing high purity hydrogen and sulphur |
| CN108342743B (en) * | 2017-01-23 | 2020-09-08 | 中国石油化工股份有限公司 | Method and device for preparing high-purity hydrogen and sulfur by electrolyzing hydrogen sulfide |
| CN110862838A (en) * | 2018-08-27 | 2020-03-06 | 襄阳中诚检测科技有限公司 | Chemical product providing system |
| CN112011375A (en) * | 2020-07-14 | 2020-12-01 | 中国人民解放军63919部队 | Extraterrestrial base solid waste and in-situ material resource integrated utilization system and method |
| CN114525518A (en) * | 2020-11-09 | 2022-05-24 | 中国石油大学(北京) | Method for utilizing renewable energy source electricity |
| CN114525518B (en) * | 2020-11-09 | 2023-01-31 | 中国石油大学(北京) | Method for utilizing renewable energy source electricity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105695655A (en) | System and method for preparing clean gas base vertical furnace reducing gas through coal gasification | |
| CN104593804B (en) | A kind of high-temperature electrolysis CO 2/ H 2o prepares synthetic gas system and application thereof | |
| CN103132100B (en) | Technological method for producing pure hydrogen and carbon dioxide from coals | |
| JP5935605B2 (en) | Steelworks operating method and carbon dioxide gas decomposition apparatus | |
| CN205062101U (en) | Carbon -free system iron device | |
| JP2015091572A (en) | Biogas producing system and method of producing biogas and carbon dioxide reduced product using biogas producing system | |
| WO2024045700A1 (en) | Process and system for preparing synthesis gas by electrolysis of co2 in flue gas | |
| JP6011014B2 (en) | Carbon dioxide gas decomposition apparatus and decomposition method | |
| CN106039964B (en) | A kind of method of desulfurization co-producing hydrogen and sulfuric acid | |
| CN103551031B (en) | Method and device for purifying phosphorus, sulfur and cyanogen under synergetic action of electrochemical oxidation and liquid phase catalytic oxidation | |
| Huang et al. | Edge and defect sites in porous activated coke enable highly efficient carbon-assisted water electrolysis for energy-saving hydrogen production | |
| Zhang et al. | A mechanism in boosting H2 generation: nanotip-enhanced local temperature and electric field with the boundary layer | |
| CN205635670U (en) | System for clean gas of coal gasification preparation base shaft furnace is crude gas still | |
| CN102872704B (en) | Device and method for purifying residual HCN (hydrogen cyanide) through electro-Fenton | |
| CN106048641A (en) | Process method of electrochemically preparing Fe3+ and H2 in pair | |
| Rusdianasari et al. | Hydrogen gas production using water electrolyzer as hydrogen power | |
| CN102895853B (en) | Device and method for electro-dynamic migration recovery and cyanogen-containing waste gas purification | |
| CN110499516B (en) | Clean energy system applying solar energy to coal-fired device and using method thereof | |
| CN110872651B (en) | Method for removing chloride ions in chlorine-containing sulfuric acid solution by adopting fluidized bed electrode | |
| KR101359193B1 (en) | Regeneration of desulfurization agent in desulfurization of anaerobic digester gas | |
| CN109956452A (en) | A kind of preparation method and its device of reagent hydrochloric acid | |
| CN203577632U (en) | Electrochemical reaction device | |
| CN220098672U (en) | High concentration chloride ion remove device | |
| CN103756713B (en) | Device and process for coproducing oil and natural gas by multiple plasma torches | |
| CN112981445B (en) | Oxidation-reduction lead electrocatalytic material, preparation method thereof and application thereof in electrocatalytic reduction of sulfur dioxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 102200 Beijing city Changping District Machi Town cow Road No. 18 Applicant after: Shenwu science and technology group Limited by Share Ltd Address before: 102200 Beijing city Changping District Machi Town cow Road No. 18 Applicant before: Beijing Shenwu Environment Energy Technology Group Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160622 |
|
| RJ01 | Rejection of invention patent application after publication |