CN104046395B - Gas-solid mixed material pressure continuous-reduction system - Google Patents
Gas-solid mixed material pressure continuous-reduction system Download PDFInfo
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- CN104046395B CN104046395B CN201410051335.6A CN201410051335A CN104046395B CN 104046395 B CN104046395 B CN 104046395B CN 201410051335 A CN201410051335 A CN 201410051335A CN 104046395 B CN104046395 B CN 104046395B
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Abstract
The invention relates to a solid-gas mixed material pressure continuous-reduction technology and a system therefor. The solid-gas mixed material pressure continuous-reduction technology solves the problem of high investment, material discontinuity, easy damage on system parts and poor reliability in solid-gas mixed material pressure continuous-reduction. Through use of solid phase control and gas phase pressure step-by-step reduction, it is avoided that solid phase particle abrasive crushing is produced in pressure reduction and gas expanding volume is large so that gas-solid fly ash separation is difficult. Gas in the gas-solid mixture is discharged by a multistage decompressor under the control so that system reliability is greatly improved and continuous and stable reduction of gas-solid mixture pressure is realized. The technology has simple processes, adopts the equipment installed conveniently, has high reliability, can be operated continuously, and has safety, a low investment cost and a low operation cost.
Description
Technical field
Technique and its system and equipment the present invention relates to a kind of solids and gas mixture material continuously reduces pressure.
Background technology
Recently as the Modern Coal-based Chemical technology high-speed development of cleaning, energy-saving and environmental protection, coal gasification method is increasingly various
Change, coal gasification pressure increasingly raises, the interval decompression emission problem of lime-ash discharge after raw material coal gasification becomes increasingly conspicuous, due to its control
A series of problems, such as system is complicated, Material control valve is denuded and need to adopt transformation lock hopper, causes investment rising, the reliability of device
Decline, affect the annual continuous operating time of whole coal gasification apparatus, the present invention is achieved using the continuous decompression technology of classification and adds
The continuous emission problem of pressure lime-ash, does not set lock hopper, does not adopt wear-resisting control valve in flow process, be the safe long period of coal gasification apparatus
Operation provides effective solution route.
Industrial at present it is first shut off the lime-ash stop valve before and after lock hopper all using lock hopper interval ash discharge slag technology, with lazy
Property gas be lock hopper pressurising, when lock hopper pressurising is consistent with high pressure cinder tank pressure, stop pressurising, then open lock hopper high-pressure chamber
End lime-ash stop valve, high pressure lime-ash is put into lock hopper, is then shut off lock hopper high-pressure chamber end and cuts the disconnected valve of lime-ash, by pipeline pair of releasing
Lock hopper exhaust decompression, when pressure drop is to low pressure cinder tank pressure, closes drain valve, opens the lime-ash cut-out of lock hopper low pressure storehouse end
Material is entered low pressure cinder tank by valve.
A large amount of nitrogen for lock hopper pressurising to be consumed using this technique, lime-ash stop valve repeatedly switchs easy abrasion and damages
Bad, secondly, lock hopper is a tired pressure vessel repeatedly filling pressure release, not only manufactures and designs complexity, also there is certain safety
Hidden danger, and the operation of this batch technology also have impact on the efficiency of ash discharge slag, is current coal gasification apparatus safe and continuous long period
The threat running.
How to cancel lock hopper, the blood pressure lowering discharge of high pressure batch lime-ash material is changed into continuous with what technological process was adapted
Smooth discharge is always one of problem that modern pressurized coal gasification Technology effort solves.
Content of the invention
The invention aims to solution above-mentioned technical problem, provide that a kind of technological process is simple, equipment install convenient,
Reliability height, connectivity operation, essential safety, cost of investment and the low gas-solid mixture of operating cost continuously reduce pressure technique.
The present invention also provides a kind of continuous decompressor for above-mentioned technique.
Present system includes multistage continuous decompressor and pressure detecting control system composition.
Described pressure detecting control system is let out by the pressure detecting element (as pressure gauge) on every grade of continuous decompressor, pressure
Put pipeline, initial start-up pressurising clean pipeline and be associated with pressure detecting element be arranged on letting out on pressure releasing pipeline
Bleed off pressure force regulating valve (or self-supporting regulation valve) and be arranged on the pressurising cleaning regulating valve composition on pressurising cleaning pipeline.
Described continuous decompressor is the key core part of the present invention, by relief pipe, gas expansion chamber and pressure housing
Composition.The material of relief pipe is different using ventilative powdered metal material manufacture or ventilative according to the property of gas-solid material
Silk screen sintering metal material manufacture or ventilative ceramic material manufacture or by inside and outside two-layer or the built-in filter of multiple layer metal silk screen
Sand manufacture or simple tied up manufacture or be made up of above multiple material mixing manufacture by multiple layer metal silk screen, its act on be allow swollen
Swollen gas by and allow solid material to stay to greatest extent in relief pipe, gas expansion chamber, in the outside of relief pipe, is shell
Cavity between body and relief pipe, its volume is the twice of decompression pipe volume.Pressure housing is the pressure-bearing protective housing of decompressor.
Multistage continuous decompressor includes single-stage pressure reducing or two-stage tandem to ten grades of series connection decompressions, and every grade of decompressor is independently arranged
Multi-stage pressure reducers Stress control can also be concentrated on and control in one or several control systems and adjust, these regulations can be
Independent can also be related.
Multi-stage pressure reducers are connected in series, and reach lime-ash blood pressure lowering by gaseous pressure of releasing, and realize the continuous mesh running of material
, the control pressurer system that related decompressor is made up of independent pressure instruction and regulating valve or air relief valve.
Pressure before the decompression of gas-solid mixing material is not more than 10mpa, and the pressure after decompression is big for being not less than device location
Any pressure of atmospheric pressure.
Positioning antivibrator and expansion joint are additionally provided with described relief pipe.
When the continuous depressurized system of gas-solid mixing material of the present invention is in running order, the high-pressure chamber reducing pressure as needed and low
Pressure reduction between pressure storehouse, the operating pressure of reasonable distribution decompressor at different levels, control this level to subtract by every stage pressure detecting and controlling system
Depressor operating pressure is stable, then opens high-pressure chamber Material valve, you can realize gas-solid mixing material and continuously reduce pressure.
Brief description
Fig. 1 is present invention process flow chart and control system architecture figure.
Fig. 2 is the present invention continuous decompressor structure chart.
Wherein, 1- high pressure cinder tank, 2- high-pressure side lime-ash stop valve, 3- lime-ash pipeline, 4- decompressor, 5- pressure detecting control
Device processed, 6- release pressure-regulating valve, 7- pressurising cleaning regulating valve, 8 low-pressure end lime-ash stop valves, 9 low pressure cinder tanks,
10-initial start-up pressurising cleaning pipeline, 11- expand pipeline of releasing, 12- high pressure lime-ash entrance, 13- pressure housing, 14- decompression
Pipe, 15- pressurising cleaning gas import, 16- positioning antivibrator, 17- low pressure lime-ash outlet, 18- expansion joint (by requirement of engineering setting),
19- gas expansion chamber, 20- pressure detecting element interface, 21- expand interface tube of releasing.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further explained with explanation:
Present system includes multistage continuous decompressor 2 and pressure detecting control system composition, and described decompressor 2 series connection is even
Connect, described decompressor 2 by relief pipe 14, gas expansion chamber 19 and and pressure housing 13 form, wherein, described gas expansion chamber
19 is the twice of relief pipe 14 volume；Described pressure housing 13 is provided with and cleans, with pressurising, the pressurising cleaning gas that regulating valve 7 is connected
Interface 15 and the expansion being connected with pressure-regulating valve 6 of releasing are released interface tube 21；Described pressure detecting control system is by many cascades
Pressure detecting element 5 on continuous decompressor 4, pressure releasing pipeline 11, initial start-up pressurising are cleaned pipeline 10 and are arranged on pressure
Power release on pipeline 11 release pressure-regulating valve 7 and be arranged on initial start-up pressurising clean pipeline 10 on pressurising cleaning adjust
Section valve 7 forms.The material of described relief pipe 14 by ventilative powdered metal material, ventilative silk screen sintering metal material or
Ventilative ceramic material manufacture, its effect be allow expansion gas by and allow solid material stay relief pipe to greatest extent
Interior.
Multistage continuous decompressor 4 includes single-stage pressure reducing or two-stage tandem to ten grades of series connection decompressions；The pressure of described decompressor 4
Control system can be every grade of decompressor 4 be independently arranged multi-stage pressure reducers 4 Stress control can also be concentrated on one or several
Control in control system and adjust, these regulations can be independent can also be related.Before the decompression of gas-solid mixing material
Pressure is not more than 10mpa, and the pressure after decompression is any pressure being not less than device location atmospheric pressure；Described relief pipe 14
On be additionally provided with positioning antivibrator 16 and expansion joint 18.
Claims (7)
1. the continuous depressurized system of a kind of gas-solid mixing material, forms including multistage continuous decompressor and pressure detecting control system,
It is characterized in that, described decompressor is connected in series, and described decompressor is made up of relief pipe, gas expansion chamber and pressure housing,
Wherein, described gas expansion chamber is the twice of decompression pipe volume；Described pressure housing is provided with and is connected with pressurising cleaning regulating valve
Pressurising clean gas interface and the expansion that is connected with pressure-regulating valve of releasing is released interface tube；Described pressure detecting control system by
Pressure detecting element on multistage continuous decompressor, pressure releasing pipeline, initial start-up pressurising are cleaned pipeline and are arranged on pressure
Power release on pipeline release pressure-regulating valve and be arranged on pressurising clean pipeline on pressurising cleaning regulating valve composition.
2. the continuous depressurized system of gas-solid mixing material as claimed in claim 1 it is characterised in that described relief pipe material by
Ventilative powdered metal material, ventilative silk screen sintering metal material or ventilative ceramic material manufacture, its effect is to allow
Expand gas by and allow solid material to stay to greatest extent in relief pipe.
3. the continuous depressurized system of gas-solid mixing material as claimed in claim 1 is it is characterised in that described reducer pressure controls
System can be that every grade of decompressor is independently arranged and multi-stage pressure reducers Stress control can also be concentrated on one or several control systems
Control in system and adjust, these regulations can be independent can also be related.
4. the continuous depressurized system of gas-solid mixing material as claimed in claim 1 is it is characterised in that before the decompression of gas-solid mixing material
Pressure be not more than 10mpa, the pressure after decompression is any pressure being not less than device location atmospheric pressure.
5. the continuous depressurized system of gas-solid mixing material as claimed in claim 1 is it is characterised in that multistage continuous decompressor is two
Level is connected in series to ten grades of series connection decompressions.
6. the continuous depressurized system of gas-solid mixing material as claimed in claim 1 is it is characterised in that reducer pressure control system
In regulating valve be hand-operated valve.
7. the continuous depressurized system of gas-solid mixing material as claimed in claim 1 is it is characterised in that be additionally provided with described relief pipe
Positioning antivibrator and expansion joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051335.6A CN104046395B (en) | 2014-02-15 | 2014-02-15 | Gas-solid mixed material pressure continuous-reduction system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051335.6A CN104046395B (en) | 2014-02-15 | 2014-02-15 | Gas-solid mixed material pressure continuous-reduction system |
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| Publication Number | Publication Date |
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| CN104046395A CN104046395A (en) | 2014-09-17 |
| CN104046395B true CN104046395B (en) | 2017-01-18 |
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| CN201410051335.6A Active CN104046395B (en) | 2014-02-15 | 2014-02-15 | Gas-solid mixed material pressure continuous-reduction system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105775754B (en) * | 2016-04-27 | 2018-03-13 | 北京首钢国际工程技术有限公司 | A kind of injection tank pressure relief device of positive pneumatic transport |
| CN109569203A (en) * | 2018-12-10 | 2019-04-05 | 安徽金禾实业股份有限公司 | A kind of processing method and processing device of furfural dregs and tail gas |
| CN111978993B (en) * | 2020-07-17 | 2022-01-07 | 新奥科技发展有限公司 | Pressure reducing device and coke discharging system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8308836B2 (en) * | 2009-04-20 | 2012-11-13 | Southern Company | Continuous coarse ash depressurization system |
| CN101781580B (en) * | 2009-12-03 | 2012-10-17 | 刘宏建 | Grading pressurization and depressurization method of pressure gasification furnace coal lock |
| CN102295957A (en) * | 2011-07-31 | 2011-12-28 | 圣火科技(河南)有限责任公司 | Continuous slag removal and pressure release apparatus for pressurized gasifier |
| CN102492474A (en) * | 2011-11-30 | 2012-06-13 | 北京盈德清大科技有限责任公司 | Gasification furnace |
| CN103224813B (en) * | 2013-04-15 | 2014-11-05 | 中国五环工程有限公司 | Pressurized fluidized bed technology for coal gasification and pressurized fluidized bed system |
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| CN104046395A (en) | 2014-09-17 |
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