CN101679886A - The mixture of carbonic acid gas and nitrogen is the purposes as inerting medium and delivery medium in the powder feed system that is used for the coal dust pressurized gasification - Google Patents

The mixture of carbonic acid gas and nitrogen is the purposes as inerting medium and delivery medium in the powder feed system that is used for the coal dust pressurized gasification Download PDF

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CN101679886A
CN101679886A CN200880014146A CN200880014146A CN101679886A CN 101679886 A CN101679886 A CN 101679886A CN 200880014146 A CN200880014146 A CN 200880014146A CN 200880014146 A CN200880014146 A CN 200880014146A CN 101679886 A CN101679886 A CN 101679886A
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nitrogen
medium
mixture
powder feed
carbonic acid
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CN200880014146A
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M·欣格尼茨
G·蒂茨
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Siemens AG
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Siemens AG
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    • 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
    • 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
    • C10J3/48—Apparatus; Plants
    • C10J3/50—Fuel charging devices
    • 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
    • C10J3/78—High-pressure apparatus
    • 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
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/15—Details of feeding means
    • 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
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/15—Details of feeding means
    • C10J2200/156—Sluices, e.g. mechanical sluices for preventing escape of gas through the feed inlet
    • 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
    • C10J2300/0969—Carbon dioxide
    • 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
    • Y02P20/141—Feedstock

Abstract

Be used for the powder feed system of coal dust pressurized gasification (this system comprises storage, several powder feed locks (SES) and the metering interpolation container (DG) that is used to store coal dust), to load the assembly of high working pressure being arranged also is that powder feed lock and metering interpolation container (DG) are supplied with the nitrogen N as inerting medium and delivery medium or fluidizing medium 2/ carbonic acid gas CO 2Mixture.Heat this and supplied with nitrogen N 2/ carbonic acid gas CO 2The assembly of mixture is to following degree: make temperature be higher than the cut off value in two-phase zone.Particularly for being the coal dust pressurized gasification of target to be to produce the synthesis gas that is used to produce different hydrocarbon, favourable part is to have reduced the nitrogen content that is caused by the powder feed system in product gas.

Description

The mixture of carbonic acid gas and nitrogen is the purposes as inerting medium and delivery medium in the powder feed system that is used for the coal dust pressurized gasification
The operation that the application's theme relates to the feature that has claim 1 or 4 respectively is used for the method for powder feed system (Staubeintragung) of coal dust pressurized gasification (Kohlenstaubdruckvergasung) and the powder conveying device that is used for every part of pressure gasification.
Usually use nitrogen as the inerting medium of the pneumatically-operated powder feed system of coal dust pressurizing gasifying apparatus and delivery medium from air separation plant.This method flexible program in blast furnace coal dust spray in the feed system of usefulness and be confirmed in the coal dust pressurizing gasifying apparatus and be mature on the whole industrial.Wherein advantageously, the depressed gas of this powder feed lock (Staubeintragsschleuse) and under the specific operation condition, add container in metering
Figure G2008800141464D00011
In the excess air that produces in being discharged to atmosphere before dedusting in the particular filter container under the working pressure condition that improves.Although carry based on pneumatic dense-phase flow The powder feed system with very high duty ratio
Figure G2008800141464D00013
Work, but nitrogen enters into the threshold value that gasification system has still exceeded permission in many cases.Its reason also is the pressure process that improves constantly under most of applicable cases.Particularly, need the nitrogen content in the restriction product gas for being for the coal dust pressurized gasification of target with the synthesis gas of producing different hydrocarbon.
The application's theme based on problem, also promptly develop the method or the device of the powder feed system that is used for the coal dust pressurized gasification, make restriction nitrogen enter into the defective that follow-up gasification system and restriction bring thus.
This problem is solved by the feature of claim 1 or 4.
According to the present invention, consider in the coal dust feed system, to use the mixture of carbonic acid gas and nitrogen as inerting medium and delivery medium from the requirement of the nitrogen content in the product gas of coal dust pressurizing gasifying apparatus is feasible about restriction.Device section with nitrogen/carbon dioxide mixture operation is heated to following degree: make temperature surpass the cut off value in two-phase zone.The present invention has advantageously utilized the following fact, not all assembly all must be with the operation of nitrogen/carbon dioxide mixture, in fact to described storage carry the expense of comparing with carbonic acid gas lower through heated nitrogen as inerting medium (Inertisierungmedium) and porous medium (Auflockerungsmedium).
In a kind of specific extended mode of the present invention,, allow content to set nitrogen N at most according to the nitrogen that enters the mouth at delivery conduit to reactor according to the nitrogen of the product gas that enters into gasification installation that allows at most 2/ carbonic acid gas CO 2Ratio of mixture.Thus, avoided increasing and for the required heating expense of this powder feed system of trouble free ground operation and the partial pressure of carbon dioxide of reduction thus along with nitrogen content in the mixture.
The favourable expansion scheme of the application's theme provides in the dependent claims.
In understanding required scope, the application's theme is described in detail in detail as embodiment hereinafter by accompanying drawing.Wherein:
Fig. 1 shows the schematic diagram of coal dust feed system of the present invention.
Can be used as inerting medium and porous medium carries through heated nitrogen N to the heated storage BK that is used to store solid FS (for example coal dust) that is in environmental stress 2Can carry one or more solids that are in the powder feed lock SES of high working pressure (for example 40bar) by e Foerderanlage.Can be used as inerting medium and delivery medium to described powder feed lock to be higher than the temperature supplying nitrogen N of under high working pressure two-phase zone cut off value 2/ carbonic acid gas CO 2Mixture.Discharge depressed gas (Entspannungsgas) at the upper area of this powder feed lock, through multi-step pressure reducing apparatus mEV reduce pressure environmental stress and dedusting under environmental stress in the filter F that the downstream connects.Adding the solid drop pipe by sufficient size under gravity promotes that receives among the container DG from the powder feed lock in metering carries out.Each powder feed system uses two to four powder feed locks.
Use nitrogen N as fluidizing agent 2/ carbonic acid gas CO 2Mixture.Divide fluidized-bed by the bottom generating unit that fluidizing agent adds container in metering.Be the fluidized-bed state with coal dust by the powder filler state-transition thus and change feed status thus simultaneously into.Because guaranteed that by method steps before the interstitial volume of the powder filler in the metering interpolation container is by nitrogen N 2/ carbonic acid gas CO 2Mixture is filled and is used nitrogen N equally for fluidisation 2/ carbonic acid gas CO 2Mixture carries gas by nitrogen N at the powder to the delivery conduit ingress of reactor 2/ carbonic acid gas CO 2Mixture is formed.
(Injectionsgas) uses nitrogen N equally as jet flow stream 2/ carbonic acid gas CO 2Mixture.This jet flow stream is guided in the coal dust delivery conduit.In order enough to identify coal dust charging fault apace, may need the jet flow stream charging to reactor.
What the present invention recommended is, in whole feed system method section in high-voltage operation, also is powder feed lock and feed containers, uses the carbonic acid gas-nitrogen mixture of same composition.
To use risk that carbonic acid gas causes by the influence (Anfall) of liquid carbon dioxide as inerting medium or delivery medium or, use the mixture of inert component carbonic acid gas and nitrogen to operate in order to reduce in the coal dust feed system in order to be reduced in heating expense required when using pure carbon dioxide.
Because the thermodynamic property of carbonic acid gas is also observed some characteristic at this.This has reached the cut off value in two-phase zone owing to pure carbon dioxide at the strive pressure process that surpasses 40 crust that reaches especially in envrionment temperature.For fear of this point, whole be in or surpass required pressure process with carbonic acid gas method of operating section in, always guarantee sufficiently high service temperature.
The mixture of two kinds of inerting media and delivery medium produces with suitable manner, and uses for the powder feed system.By using carbonic acid gas as problem that inerting gas and delivering gas caused or be used for the required heating expense of this powder feed system of trouble free ground operation along with in the increase of mixture nitrogen content with reduce partial pressure of carbon dioxide thus and avoided.
The nitrogen content that allows in mixture is introduced by the nitrogen of striving realizing in the gasification installation product gas and is provided.
Common titanium dioxide carbon/nitrogen gas ratio of mixture is 75/25,60/40,50/50,40/60 or 25/75.
Described carbonic acid gas/nitrogen mixture has reached sufficiently high temperature at the device end place.In storage, carry and gas cooling itself according to the application-specific of method the time is offset by suitable heating system.
Particularly importantly, the temperature of the coal dust that produces in the mill-drying device that the upstream connects continues to keep sufficiently high level until the inlet of the delivery conduit in reactor FLE.Therefore, described operation and filling with nitrogen as the coal dust storage of inerting medium and porous medium under environmental stress also through heating.Similarly, the nitrogen of being imported is through warm, to avoid for example between long-time device down period the powder cooling taking place.According to the present invention, at the lasting heating unit of method section itself outfit of atmosphere storage, gas delivery and metering add-on system.
The problem of the filtering element reduction in work-ing life that the liquid carbon dioxide influence that causes for multistage (polytrop) cooling of getting rid of medium during the lock decompression causes will be avoided carrying out the dedusting of depressed gas at the working pressure that raises.
The pressure of the depressed gas that the powder load degree reduces reduces by the reliever mEV of multistage design.In the filter F of environmental stress operation, carry out the dedusting of depressed gas subsequently.
Run between powder feed lock and reliever is through heating, to compensate the multi-step pressure reduction cooling and to keep the working conditions of the permission of this vacuum filter.
This reliever so is provided with, and makes to avoid the noise that reduces pressure simultaneously.For example use at so-called muffler plate known in the art as reliever.The muffler plate one side is by multi-step pressure reduction and reduce the decompression noise by overall required hole cross-sectional area is assigned to many littler holes on the other hand.Also can use the wear-resisting throttling valve of the sourdine that connects after having.If these measures are not enough, then can use extra soundproof measures, for example by the sound insulation shell.

Claims (4)

1. be used to move the method for the powder feed system that the coal dust pressurized gasification uses, this powder feed system comprises the storage that is used to store coal dust (BK) that is loaded with environmental stress, metering interpolation container (DG) and the some powder feed locks (SES) that is loaded with high working pressure, thus
Heat described storage,
Supply with through heated nitrogen N to this storage 2As inerting medium and porous medium,
Supply with nitrogen N to this powder feed lock 2/ carbonic acid gas CO 2Mixture as inerting medium and delivery medium and
Add the supply for receptacles nitrogen N to this metering 2/ carbonic acid gas CO 2Mixture is as fluidizing medium.
2. the method for claim 1 is characterized in that, with the nitrogen N of being supplied with 2/ carbonic acid gas CO 2Mixture heating up is to the temperature that surpasses the two-phase zone cut off value under process high pressure (high pressure area of this system).
3. each method of aforementioned claim is characterized in that, according to the nitrogen that allows at most to introduce in the product gas of gasification installation, sets described nitrogen N according to the nitrogen ratios of the transfer lime ingress that is delivered to reactor of maximum permissions 2/ carbonic acid gas CO 2Ratio of mixture.
4. be used for the powder feeding device of coal dust pressurized gasification, comprise,
Be loaded with the storage that is used to store coal dust of environmental stress,
Can load the powder feed lock of high working pressure,
Container is added in the metering that can load high working pressure, wherein
Described storage can heat,
Can supply with through heated nitrogen as inerting medium and porous medium to this storage,
Can supply with nitrogen N to this powder feed lock 2/ carbonic acid gas CO 2Mixture is as inerting medium and delivery medium,
Can add the supply for receptacles nitrogen N to this metering 2/ carbonic acid gas CO 2Mixture is as fluidizing medium.
CN200880014146A 2007-04-30 2008-04-18 The mixture of carbonic acid gas and nitrogen is the purposes as inerting medium and delivery medium in the powder feed system that is used for the coal dust pressurized gasification Pending CN101679886A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007020332A DE102007020332A1 (en) 2007-04-30 2007-04-30 Use of a mixture of carbon dioxide and nitrogen as an inerting and conveying medium in Staubeintragsystemen for pulverized coal gasification
DE102007020332.4 2007-04-30
PCT/EP2008/054713 WO2008132071A2 (en) 2007-04-30 2008-04-18 Use of a mixture of carbon dioxide and nitrogen as an inerting and flow medium in powder injection systems for use in pulverized coal gasification under pressure

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US (1) US20100126068A1 (en)
EP (1) EP2142621A2 (en)
CN (1) CN101679886A (en)
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CA (1) CA2685511A1 (en)
DE (1) DE102007020332A1 (en)
WO (1) WO2008132071A2 (en)

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CN102424761A (en) * 2010-07-22 2012-04-25 通用电气公司 High pressure conveyance gas selection and method of producing the gas
CN102927579A (en) * 2012-11-09 2013-02-13 广东电网公司电力科学研究院 Coal pulverizing system
CN103275761A (en) * 2013-06-25 2013-09-04 朱清敏 Method and device for manufacturing chemical virgin gas with solid organic materials
CN103710051A (en) * 2012-10-01 2014-04-09 西门子公司 System for fluidizing and conveying powdery product
CN107099338A (en) * 2017-05-09 2017-08-29 新奥科技发展有限公司 Pulverized coal conveying device, coal gasification system and its fine coal carrying method

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CN103130289B (en) * 2012-09-28 2014-07-02 天津晟远环境有限公司 Coal gasification chilling grey water high pressure flash evaporation decompression buffering device
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CN102424761A (en) * 2010-07-22 2012-04-25 通用电气公司 High pressure conveyance gas selection and method of producing the gas
CN103710051A (en) * 2012-10-01 2014-04-09 西门子公司 System for fluidizing and conveying powdery product
CN103710051B (en) * 2012-10-01 2016-09-21 西门子公司 Fluidisation and the system of powdery material
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CN102927579B (en) * 2012-11-09 2015-02-11 广东电网公司电力科学研究院 Coal pulverizing system
CN103275761A (en) * 2013-06-25 2013-09-04 朱清敏 Method and device for manufacturing chemical virgin gas with solid organic materials
CN107099338A (en) * 2017-05-09 2017-08-29 新奥科技发展有限公司 Pulverized coal conveying device, coal gasification system and its fine coal carrying method
CN107099338B (en) * 2017-05-09 2020-10-20 新奥科技发展有限公司 Pulverized coal conveying device, pulverized coal gasification system and pulverized coal conveying method thereof

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WO2008132071A2 (en) 2008-11-06
AU2008244398A1 (en) 2008-11-06
US20100126068A1 (en) 2010-05-27
EP2142621A2 (en) 2010-01-13
WO2008132071A3 (en) 2008-12-31
AU2008244398A8 (en) 2009-11-26
DE102007020332A1 (en) 2008-11-06

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Application publication date: 20100324