CN1013876B - Separation method and device for synthesis gas/fly ash mixture - Google Patents
Separation method and device for synthesis gas/fly ash mixtureInfo
- Publication number
- CN1013876B CN1013876B CN85109035A CN85109035A CN1013876B CN 1013876 B CN1013876 B CN 1013876B CN 85109035 A CN85109035 A CN 85109035A CN 85109035 A CN85109035 A CN 85109035A CN 1013876 B CN1013876 B CN 1013876B
- Authority
- CN
- China
- Prior art keywords
- fly ash
- separator
- synthetic gas
- gas
- mixture
- 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.)
- Expired
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 72
- 239000010881 fly ash Substances 0.000 title claims abstract description 48
- 238000000926 separation method Methods 0.000 title claims description 13
- 230000015572 biosynthetic process Effects 0.000 title abstract description 8
- 238000003786 synthesis reaction Methods 0.000 title abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 147
- 238000000034 method Methods 0.000 claims abstract description 35
- 239000011261 inert gas Substances 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims description 68
- 239000012159 carrier gas Substances 0.000 claims description 6
- 238000005243 fluidization Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 238000002309 gasification Methods 0.000 description 4
- 230000036541 health Effects 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 229910052756 noble gas Inorganic materials 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000000454 anti-cipatory effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Industrial Gases (AREA)
- Processing Of Solid Wastes (AREA)
- Cyclones (AREA)
Abstract
一种分离合成气/飞灰混合物的方法。将合成气/飞灰混合物与惰性气体接触，随后将飞灰与合成气/惰性气体混合物彼此独立地排出。A method of separating a syngas/fly ash mixture. The synthesis gas/fly ash mixture is contacted with an inert gas, and the fly ash and the synthesis gas/inert gas mixture are subsequently discharged independently of each other.
按上述方法分离合成气/飞灰混合物的装置包括一个分离器，它配置有一条合成气/飞灰混合物进料管线，一条惰性气进料线，一条惰性气/合成气混合物出料线和一条飞灰出料线，所有管线都有密封装置，惰性气进料线和惰性气/合成气混合物出料线有防止或限制飞灰流入的装置。合成气含量可降至低于0.01N1合成气/kg飞灰。The apparatus for separating the synthesis gas/fly ash mixture as described above comprises a separator equipped with a synthesis gas/fly ash mixture feed line, an inert gas feed line, an inert gas/synthesis gas mixture discharge line and a Fly ash discharge line, all pipelines have sealing devices, inert gas feed line and inert gas/synthesis gas mixture discharge line have devices to prevent or limit the flow of fly ash. Syngas content can be reduced to less than 0.01N1 syngas/kg fly ash.
Description
The present invention relates to synthesize/separation method and the device of fly ash mixture.
Adopt unburn completely coal prepare in the process of synthetic gas, produce the by product flying dust usually.At first synthetic gas must be separated with flying dust, the synthetic gas of above-mentioned acquisition can be used for producing organic compound or being applied to others.
By a cyclonic separator, more than one strainer, or its associated plant can be separated most of synthetic gas from flying dust.Yet obviously, it is not thorough to adopt this method to separate.Always remain in the flying dust and a large amount of synthetic gas is arranged (almost all by CO and H
2Form) so that owing to H is arranged in place near flying dust
2And there is serious explosion hazard, and owing to the existence of CO jeopardizes flying dust people's health on every side.So, importantly flying dust may with must as much as possible all synthetic gas all be separated from flying dust before air contacts.
So, one of purpose of the present invention provides a kind of separation method of synthetic gas/fly ash mixture, wherein the separation degree of synthetic gas and flying dust must reach following requirement, and the flying dust after promptly separating contact with air and (or taking place slight) blast and elimination do not take place or alleviates owing to there being H respectively
2The harm that is caused with CO to HUMAN HEALTH.Another object of the present invention provides a kind of device of implementing aforesaid method.
The invention provides a kind of separation method of synthetic gas/fly ash mixture, wherein synthetic gas/fly ash mixture is contacted with rare gas element and flying dust and synthetic gas/noble gas mixtures are removed independently of one another in succession.
The present invention also provides a kind of device that separates synthetic gas/fly ash mixture according to the method described above, this device comprises a separator, separator is equipped with a synthetic gas/fly ash mixture feeding line,, an inert gas feed pipeline,, the dispatch pipeline of the dispatch pipeline of rare gas element/syngas mixture and a flying dust, and these pipelines all have tightness system, and in order to prevent and limit the inflow of flying dust, the vent line of inert gas feed pipeline and rare gas element/syngas mixture also is equipped with corresponding device thereof.
Though problem of the present invention results from by gasification of coal is prepared synthetic gas, the present invention is not limited only to this, and terms of settlement of the present invention has more general purposes.What situation no matter occurs, all available method of the present invention is separated synthetic gas/fly ash mixture, reaches above-mentioned requirements.
In this article, rare gas element is a kind of gas or a kind of gaseous mixture, and under application conditions of the present invention, rare gas element does not react with the various components that occur in present method implementation process.Though say the CO and/or the H that are present in the rare gas element in principle
2Needn't dispose, but very clear, there are CO and H to exist in the rare gas element, the separating effect of synthetic gas/fly ash mixture just can not improve so, and therefore, in a certain better enforcement part of the present invention, rare gas element does not contain CO or H
2Say that in principle any rare gas element in above-mentioned limited range all can use.Yet, better to implement in the part at of the present invention another, employed rare gas element can be retained in the flying dust, can not damage HUMAN HEALTH, does not also have explosion hazard, for example N
2And CO
2
Synthetic gas/fly ash mixture in a certain better enforcement part of the present invention especially under atmospheric pressure contacts with rare gas element at the pressure of 0.5～30bar, and its temperature can change in relative broad range, as between 0～200 ℃.And it is identical in the temperature that another is implemented in the part of the present invention with room temperature.
Method of the present invention can be used for continuously, and semicontinuous and discontinuous operation is better implemented in the part at of the present invention another, and synthetic gas/fly ash mixture contacts with rare gas element continuously, and flying dust and rare gas element/syngas mixture are discharged continuously.
Synthetic gas/fly ash mixture can suitably contact with rare gas element, its suitable mode be flying dust as fixed, mobile or fluidizing bed contacts with rare gas element.When synthetic gas/fly ash mixture contacts with rare gas element, can make flying dust enter and remain on fluidized state, in this method, rare gas element can be used as very suitable fluidizing medium.
Synthetic gas is stored and/or conveying through separating from flying dust fully and after being discharged from, flying dust can being further processed.
CO and the H that antiaircraft combustion unit exists with burn off can further be handled or be sent to the rare gas element/syngas mixture of discharging
2
If must from the less relatively flying dust of quantity, isolate a large amount of synthetic gas, before using method of the present invention, most of synthetic gas can adopt a cyclonic separator, and more than one strainer or their associated plant are in the above described manner by separating in the flying dust.If its advantage is that most of synthetic gas can break away from mixed inert gas like this.In addition, required amount of inert gas is less, and the pre-separation step can be carried out under the pressure of 5～40bar.
Say that in principle method of the present invention can be used for the separator of any gas and dust particle in the prior art.
Be suitable for the device of implementing the inventive method to comprise a separator, this separator is equipped with a synthetic gas/fly ash mixture feeding line,, an inert gas feed pipeline,, the vent line of a rare gas element/syngas mixture vent line and a flying dust, these pipelines have tightness system, meanwhile, in order to prevent and limit the inflow of flying dust, inert gas feed pipeline and rare gas element/syngas mixture vent line is equipped with corresponding device thereof.Best enforcement in the part of the present invention, the feeding line of synthetic gas/fly ash mixture and the vent line of synthetic gas/noble gas mixtures are connected on the separator higher position, and other two pipelines and separator bonding station are lower.In another optimum implementation of the present invention, the vent line that the flying dust vent line is connected separator bottom rare gas element/synthetic gas mixed gas then is connected the separator top.Other two pipelines engage according to above-mentioned order, and particular location must depend on the size and the shape of separator, and needed processing units.
As mentioned above, method of the present invention can be used for continuous, semicontinuous and the discontinuity operation.
Adopt the discontinuity processing treatment, flying dust and synthetic gas are imported in the separator by feeding line, close other pipeline this moment, then, and then close the feeding line of flying dust and synthetic gas, open the inert gas feed pipeline, thereby rare gas element is imported separator the separator internal pressure is raise (reaching 30bar), and then close the inert gas feed pipe.(if necessary) opens rare gas element and synthetic gas vent pipe afterwards through after a while, because the separator internal pressure is higher, synthetic gas/noble gas mixtures can be discharged reactor.At last, close the vent pipe of synthetic gas/noble gas mixtures successively, open the flying dust escape route and let ash side by side fly away.If necessary, can discharge flying dust, and this carrier gas is preferably identical with rare gas element, as N by carrier gas
2Or CO
2After closing the fly ash emission pipeline and opening flying dust/syngas mixture charging, reusable method of the present invention is separated new a collection of flying dust/syngas mixture.Synthetic gas in the flying dust might not separate fully, flying dust and remaining synthetic gas must be handled one or many through aforesaid method more like this.This can be undertaken by two kinds of approach.The first, before leaving separator, flying dust and remaining synthetic gas are repeated to contact with rare gas element in the same separator.The second, after leaving separator, with flying dust and remaining synthetic gas be conveyed into one (or a plurality of) again separator repeat said process.Usually it is separable fully to repeat said process 10 powers; If low repetition to 3～6 time also may obtain good separating resulting.
Adopt semicontinuous processing treatment, synthetic gas/fly ash mixture can be imported separator, close other pipeline simultaneously.After closing synthetic gas/fly ash mixture feeding pipe, open the vent pipe of inert gas feed pipe and rare gas element and synthetic gas, rare gas element is constantly by flying dust, and it is separated fully to discharge the synthetic gas of rare gas element/syngas mixture in flying dust continuously.After the pipeline of opening is closed, discharge flying dust by discharge pipe, discharge by above-mentioned carrier gas if possible.
As mentioned above, if it is favourable that method of the present invention is used for operate continuously, the feeding pipe by suiting with rare gas element and flying dust/syngas mixture imports separator simultaneously continuously, and with flying dust, rare gas element/syngas mixture is discharged continuously by escape route.Rare gas element can change in the scope of a broad by the speed of separator, and especially it depends on that flying dust and synthetic gas import the speed of separator, depend on the quantity of isolated synthetic gas from flying dust and the size that depends on separator.
Different with the discontinuity processing and treating method, the constant pressure of semicontinuity and continuity operation.
As mentioned above, when synthetic gas/fly ash mixture contacted with rare gas element, flying dust can be used as fixed, and mobile or fluidizing bed contacts with rare gas element.Used a kind of fluidized-bed layer best enforcement of the present invention in the part, this bed has constituted a separator, be equipped with being used to that prior art is familiar with to make dust granule fluidizing device on the separator, and used the rare gas element that can make the flying dust fluidisation and keep its fluidized state.
As mentioned above, the flying dust/syngas mixture that mainly contains synthetic gas with must be before rare gas element contacts through pre-separation, it is different that the mixture before and after the pre-separation is formed.In above-mentioned preprocessing process, isolate most of synthetic gas, in order to import through the synthetic gas/fly ash mixture of pre-separation in the separator, the feeding pipe of the synthetic gas/fly ash mixture that connects with separator must be connected on the pre-separate device, pre-separate device is a cyclonic separator, more than one strainer or their associated plant.
The pre-separation process is carried out under the pressure of 5～40bar.Because synthetic gas/fly ash mixture carries out with contacting under low pressure of rare gas element, so must reduce pressure before this.For this reason, according to the present invention, can dispose the reliever that prior art is familiar with in separator, this device is advisable to be arranged between preliminary separation stage and the separator.Known operable dropping equipment such as separator, or a kind of length-may be the little pipe of crooked-internal diameter.Used separator best enforcement of the present invention in the part.After the step-down,, synthetic gas/fly ash mixture can be imported in the separator by carrier gas by synthetic gas/fly ash mixture feeding pipe.
In addition, container of storing flying dust/syngas mixture of the suitable configuration of this device, said vesse equipment is at dropping equipment and cyclonic separator, and between strainer or its machinery, these container two ends are connected with above-mentioned two portions.As mentioned above, method and apparatus of the present invention is particularly useful for separating the flying dust/syngas mixture that is obtained by coal gasification method.
Now can be by embodiment and for a more detailed description to the present invention with reference to the accompanying drawings, wherein Fig. 1 is the functional diagram of the synthetic/fly ash mixture tripping device of anticipatory remark invention.
The synthetic gas that obtains by coal gasification under 5～40bar pressure is sent into container 2 by pipeline 1 with the by product flying dust, adopt known mode, by a cyclonic separator, more than one strainer or their machinery (all with container 2 signals) are separated the most of synthetic gas in the flying dust.Isolated synthetic gas is discharged by pipeline 3, goes to be for further processing or is used for other purposes.Flying dust is imported into collection container 5 with residual synthetic gas by pipeline 4.The pressure of the pressure that keeps container 2 and container 5 during with gasification is identical.When the amount of the flying dust in the collection container 5/synthetic gas mixed gas is abundant, will import container 7 by pipeline 6, this moment, pressure was reduced to barometric point.Then flying dust/synthetic gas mixed gas constantly is imported into separator 10 with the carrier gas from pipeline 9.For flying dust being produced and remaining in fluidized state, separator 10 must dispose corresponding device thereof.Flying dust is discharged from continuously by pipeline 13 by pipeline 12 for synthetic gas and rare gas element.
So separate the flying dust that obtains and to carry out processing treatment, carry or storage, because it does not contain H
2Or CO, thereby the health of the entail dangers to mankind or livestock not, do not have explosion hazard yet.
Through pre-treatment, the quantity of synthetic gas still is at least 10Nl synthetic gas/1kg flying dust in synthetic gas/flying dust mixed gas.By using method of the present invention, its quantity can reduce to and be lower than 0.01Nl synthetic gas/1kg flying dust.
The people that are familiar with this technical field are not difficult to find out the various improvement that the present invention does by foregoing and accompanying drawing.These improvement all belong to the scope that claims are asked for protection.
Claims (16)
1, a kind of method of separating synthetic gas/fly ash mixture, comprising the following step:
-will remain isolating synthetic gas/fly ash mixture by carrier gas to be delivered to separator;
-described synthetic gas/fly ash mixture is in contact with one another with rare gas element in separator;
-article one pipeline by separator removes rare gas element/syngas mixture and the second pipeline by separator removes flying dust subsequently.
2, by the described method of claim 1, wherein rare gas element is N
2Or CO
2
3, by the described method of claim 1, wherein synthetic gas/fly ash mixture contacts with rare gas element under the pressure of 0.5～30bar.
4, by the described method of claim 3, wherein effectively contact is under atmospheric pressure carried out.
5, by the described method of claim 1, wherein synthetic gas/fly ash mixture contacts continuously with rare gas element, and flying dust and rare gas element/syngas mixture are constantly discharged.
6,, wherein when synthetic gas/fly ash mixture contacts with rare gas element, can make flying dust generation fluidisation and remain on fluidized state by the described method of claim 1.
7,, wherein can make flying dust generation fluidisation and remain on fluidized state by rare gas element by the described method of claim 6.
8, by the described method of claim 1, wherein synthetic gas/the fly ash mixture that contacts with rare gas element obtains like this: by means of a cyclonic separator, more than one strainer or their machinery, most of synthetic gas is separated in flying dust/synthetic gas mixed gas that composition is different.
9, by the described method of claim 8, wherein synthetic gas/the fly ash mixture that contacts with rare gas element is by by a cyclonic separator, more than one strainer or its machinery under the pressure of 5～40bar, separate have different flying dusts/mixture that synthetic gas is formed obtains.
10, by the described method of claim 1, wherein, synthetic gas/fly ash mixture contacts with rare gas element in separator.
11, press the device of the described separation synthetic gas/fly ash mixture of claim 1, it is characterized in that comprising a separator, this separator disposes a synthetic gas/fly ash mixture feeding pipe,, an inert gas feed pipeline,, the discharging pipeline of a flying dust escape route and a rare gas element/synthetic gas mixed gas, and these pipelines are equipped with tightness system, have disposed again to prevent or limit the device that flying dust flows in inert gas feed pipeline and rare gas element/syngas mixture escape route.
12, by the described device of claim 11, wherein the discharging pipeline of synthetic gas/fly ash mixture feeding line and rare gas element/syngas mixture is connected the higher position of separator, and other two pipelines are connected the lower position of separator.
13, by claim 11 or 12 described devices, wherein separator disposes the device that makes the flying dust fluidisation and keep its fluidized state.
14, by the described device of claim 11, wherein the feeding line of synthetic gas/fly ash mixture is connected with a cyclonic separator, more than one strainer or their machinery, isolates a large amount of synthetic gas to be cheaper than from form different synthetic gas/fly ash mixtures.
15, by the described device of claim 14, wherein dispose dropping equipment, this dropping equipment is arranged on separator and cyclonic separator, between strainer or its machinery, and is connected with them.
16, by the described device of claim 15, wherein dispose the container of being convenient to store flying dust/syngas mixture, this container is arranged on dropping equipment and cyclonic separator, between strainer or its machinery, and is connected with them.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3445986A DE3445986C2 (en) | 1984-12-17 | 1984-12-17 | Method and device for the separation of a synthesis gas-fly ash mixture |
| DEP3445986.3 | 1984-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85109035A CN85109035A (en) | 1986-06-10 |
| CN1013876B true CN1013876B (en) | 1991-09-11 |
Family
ID=6252995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85109035A Expired CN1013876B (en) | 1984-12-17 | 1985-12-13 | Separation method and device for synthesis gas/fly ash mixture |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH0631349B2 (en) |
| CN (1) | CN1013876B (en) |
| AU (1) | AU577169B2 (en) |
| CA (1) | CA1292620C (en) |
| DE (1) | DE3445986C2 (en) |
| ZA (1) | ZA859558B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657270B (en) * | 2012-09-19 | 2015-06-10 | 中国石油化工集团公司 | Pressure charging and relieving filtering system and method of high-temperature variable-pressure equipment for solid inlet and outlet materials |
| CN104119960B (en) * | 2014-07-31 | 2016-07-20 | 新奥科技发展有限公司 | A kind of flying dust separation method |
| CN105062573A (en) * | 2015-09-21 | 2015-11-18 | 七台河宝泰隆煤化工股份有限公司 | Centralized dust removal device for cyclone dust removers and waste heat boilers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA803180B (en) * | 1979-03-01 | 1981-11-25 | Stoic Combustion Ltd | Dust cyclone |
-
1984
- 1984-12-17 DE DE3445986A patent/DE3445986C2/en not_active Expired - Fee Related
-
1985
- 1985-11-27 CA CA000496293A patent/CA1292620C/en not_active Expired - Fee Related
- 1985-12-13 CN CN85109035A patent/CN1013876B/en not_active Expired
- 1985-12-13 ZA ZA859558A patent/ZA859558B/en unknown
- 1985-12-16 AU AU51244/85A patent/AU577169B2/en not_active Ceased
- 1985-12-16 JP JP60281286A patent/JPH0631349B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| AU5124485A (en) | 1986-06-26 |
| JPH0631349B2 (en) | 1994-04-27 |
| DE3445986A1 (en) | 1986-06-19 |
| DE3445986C2 (en) | 1999-08-12 |
| AU577169B2 (en) | 1988-09-15 |
| ZA859558B (en) | 1986-08-27 |
| CN85109035A (en) | 1986-06-10 |
| JPS61145296A (en) | 1986-07-02 |
| CA1292620C (en) | 1991-12-03 |
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