CN108795506A - A kind of coal gasification flash distillation condenser system and technique - Google Patents
A kind of coal gasification flash distillation condenser system and technique Download PDFInfo
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- CN108795506A CN108795506A CN201810608206.0A CN201810608206A CN108795506A CN 108795506 A CN108795506 A CN 108795506A CN 201810608206 A CN201810608206 A CN 201810608206A CN 108795506 A CN108795506 A CN 108795506A
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- condensate
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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
- C10J3/72—Other features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/06—Flash distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
- B01D5/0012—Vertical tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
- B01D5/009—Collecting, removing and/or treatment of the condensate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
- B01D5/0093—Removing and treatment of non condensable gases
-
- 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
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/169—Integration of gasification processes with another plant or parts within the plant with water treatments
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of coal gasification flash distillation condenser system and techniques, the grey water pipe that coal gasification washing generates buck is sequentially connected true sudden strain of a muscle tank later, vertical array tubular condenser, condensate drum, condensate pump, vacuum pump, wherein, the true gaseous phase outlet for dodging tank is connected to the tubulation top inlet of vertical array tubular condenser, the tubulation outlet at bottom of vertical array tubular condenser and condensate drum inlet communication, the liquid-phase outlet of condensate drum connects condensate pump import, condensate pump outlet is separately connected subsider pipeline and removes clean-up line at the top of the tubulation of vertical array tubular condenser, the gaseous phase outlet of condensate drum connects vacuum pump inlet, vacuum pump outlet connects floss hole.The present invention can effectively ensure that the heat transfer effect of flash condenser, improve the condensation number of flash steam, reduce flash system pressure and temperature, meet the requirement of ash water system operation.
Description
Technical field
The present invention relates to coal chemical technologies, and in particular to a kind of coal gasification flash distillation condenser system and technique.
Background technology
Coal gasification is the technology that coal is converted into synthesis gas, fuel gas by imperfect combustion, is that cleaning uses fine coal
One of important channel.Bed pulverized coal gasification technology has the advantages that high combustion efficiency, energy utilization rate are high, gradually replaces original piece
Coal combustion.
In general, the high temperature and pressure synthesis gas generated after coal gasification is after water Quench and washing procedure, after feeding
Continuous shift conversion step.In water Quench and washing process, the high buck of high temperature and pressure solid content is produced, buck by dropping step by step
Pressure, flash distillation, concentrate buck while recycling heat, the high buck of solid content finally carries out after flocculating setting, separation of solid and liquid
It recycles.
The high temperature and pressure buck generated during coal gasification is depressured in flash tank, flashes, carried in flash steam compared with
More drops, and it is mingled with a large amount of flyash.Conventional condensing plant is Horizontal U-shaped heat exchange of heat pipe, and flash steam enters heat exchange and sets
Between standby pipe, by the cooling water cooling in pipe, the condensate liquid mixing fixed gas of generation, which enters, carries out gas-liquid separation in separator, no
Solidifying gas is put through vacuum pumping heel row, and liquid recycles as needed.
To ensure heat transfer effect, conventional heat exchanger tube gap is smaller, and passes through the multiple baffling of baffle plate, in flash steam
Drop, the flyash of entrainment are easily deposited on to be formed between tubulation and block, and reduce heat transfer effect, cause a large amount of flash steam can not be by
Condensation causes system pressure to increase, temperature increases, and is unfavorable for the sedimentation of follow-up buck.
Invention content
In order to solve the deficiencies in the prior art, an object of the present invention is to provide a kind of coal gasification flash distillation condensed system
System, can effectively ensure that heat transfer effect, improve the condensation number of flash steam, reduce flash system pressure and temperature, meet grey water system
The requirement of system operation.
To achieve the goals above, the technical scheme is that：
A kind of coal gasification flash distillation condenser system, the grey water pipe that coal gasification washing generates buck are sequentially connected true sudden strain of a muscle later
Tank, vertical array tubular condenser, condensate drum, condensate pump, vacuum pump, wherein the true gaseous phase outlet for dodging tank and vertical array tubular are cold
The tubulation top inlet of condenser is connected to, tubulation outlet at bottom and the condensate drum inlet communication of vertical array tubular condenser, condensate liquid
The liquid-phase outlet of tank connects condensate pump import, and flush pipe at the top of the tubulation of vertical array tubular condenser is gone in condensate pump outlet connection
Line goes the outlet of clean-up line and the tubulation top inlet of vertical array tubular condenser at the top of the tubulation of vertical array tubular condenser to connect
Logical, the gaseous phase outlet of condensate drum connects vacuum pump inlet.
Flash steam be high temperature and pressure liquid material enter low-voltage space when, vapor liquid equilibrium state is broken, part liquid
Body drastically gasifies and becomes flash steam, absorbs the sensible heat of original liquid material to make liquid cool down.Cooling for flash steam, by
It is different from liquid material property in flash steam, it is difficult to which that tubulation of passing through certainly flows from top to bottom, thus conventional processes use horizontal row
Heat exchange of heat pipe.In the present invention, partial condensation liquid is delivered to the tubulation top inlet of vertical array tubular condenser again, is acted on
For：1. condensate liquid is made to be mixed with flash steam, flash steam is made to precool；2. the directed flow by condensate liquid drives flash steam
Flowing, to enhance flowing of the flash steam in vertical tubulation, while that original film condensation is changed to drop-wise is cold for the presence of drop
It is solidifying, enhance the condensation effect of flash steam；3. carrying fine coal in flash steam secretly, flash steam can make part powder in tubulation in flow process
Coal is adhered to tubulation inner wall, increases film and hinders coefficient, reduces heat transfer effect.By the way that condensate liquid is added so that condensate liquid is in tubulation
Wall is rinsed, and is reduced film and is hindered coefficient, improves heat transfer effect.
The second object of the present invention is to provide a kind of coal gasification flash distillation condensation process, it is cold to provide true sudden strain of a muscle tank, vertical array tubular
Condenser, condensate drum, condensate pump, vacuum pump, the buck that coal gasification generates enter it is true dodge tank, the true flash steam dodged in tank into
Enter vertical array tubular condenser, flash steam flow downward after row in-tube condensation it is cooling after enter condensate drum, condensate pump will be cold
A part of condensate liquid in lime set tank is delivered to the tubulation top inlet of vertical array tubular condenser.The top gas phase of condensate drum goes out
Mouth is connect with vacuum pump, and the fixed gas that can not be condensed in flash steam is extracted out.It maintains flash system to be in negative pressure state, improves and dodge
Steam effect.
The third object of the present invention is to provide a kind of fine coal gasification process, using above-mentioned condenser system or condensation process to powder
The buck that coal gasification generates is handled.
Beneficial effects of the present invention are：
1. system provided by the invention or technique use vertical array tubular condenser, and by condensed condensate liquid and flash steam
Flash steam is cooled down by tubulation after mixing, prevents the fine coal that flash steam is carried secretly from being deposited in tubulation inner wall, is effectively ensured
Heat exchange efficiency.
2. the vertical array tubular condenser that system provided by the invention or technique use, and flash steam is carried out using condensate liquid
It precools, the condensation number of flash steam can be greatly improved, reduce flash system pressure and temperature, to meet ash water system operation
Requirement.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the structural schematic diagram of present system；
Wherein, 1. true sudden strain of a muscle tank, 2. vertical array tubular condensers, 3. condensate drums, 4. condensate pumps, 5. vacuum pumps, 6. go to sink
Barrel line drops, and 7. remove clean-up line at the top of the tubulation of vertical array tubular condenser.
Specific implementation mode
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, exist in the prior art that " drop, the flyash carried secretly in flash steam easily deposit
The deficiency of the formation blocking in heat exchanger, so as to cause heat transfer effect reduction ", in order to solve technical problem as above, the application
Propose a kind of coal gasification flash distillation condenser system and technique.
A kind of exemplary embodiment of the application provides a kind of coal gasification flash distillation condenser system, coal gasification washing
The grey water pipe for generating buck is sequentially connected true sudden strain of a muscle tank, vertical array tubular condenser, condensate drum, condensate pump, vacuum pump later,
In, the true gaseous phase outlet for dodging tank is connected to the tubulation top inlet of vertical array tubular condenser, the tubulation bottom of vertical array tubular condenser
Portion is exported connects condensate pump import, condensate pump outlet connection with condensate drum inlet communication, the liquid-phase outlet of condensate drum
Remove clean-up line at the top of the tubulation of vertical array tubular condenser, go at the top of the tubulation of vertical array tubular condenser the outlet of clean-up line with
The tubulation top inlet of vertical array tubular condenser is connected to, and the gaseous phase outlet of condensate drum connects vacuum pump inlet.
Flash steam be high temperature and pressure liquid material enter low-voltage space when, vapor liquid equilibrium state is broken, part liquid
Body drastically gasifies and becomes flash steam, absorbs the sensible heat of original liquid material to make liquid cool down.Cooling for flash steam, by
It is different from liquid material property in flash steam, it is difficult to which that tubulation of passing through certainly flows from top to bottom, thus conventional processes use horizontal row
Heat exchange of heat pipe.In the present invention, partial condensation liquid is delivered to the tubulation top inlet of vertical array tubular condenser again, is acted on
For：1. condensate liquid is made to be mixed with flash steam, flash steam is made to precool；2. the directed flow by condensate liquid drives flash steam
Flowing, to enhance flowing of the flash steam in vertical tubulation, while that original film condensation is changed to drop-wise is cold for the presence of drop
It is solidifying, enhance the condensation effect of flash steam；3. carrying fine coal in flash steam secretly, flash steam can make part powder in tubulation in flow process
Coal is adhered to tubulation inner wall, increases film and hinders coefficient, reduces heat transfer effect.By the way that condensate liquid is added so that condensate liquid is in tubulation
Wall is rinsed, and is reduced film and is hindered coefficient, improves heat transfer effect.
Preferably, the tubulation top inlet of vertical array tubular condenser is equipped with distributor.For disperseing condensate liquid, condensation is improved
The mixed effect of liquid and flash steam, achievees the purpose that precooling；Make to be suspended with a large amount of tiny condensing droplets, drop in flash steam simultaneously
Presence will break the liquid film of tubulation inner wall, so that film condensation is become dropwise condensation, enhance heat exchange efficiency.
Preferably, vertical array tubular condenser tubulation is not less than φ 38mm tubulations using diameter.Do not select conventional φ 19mm,
φ 25mm calibers, it is therefore an objective to reduce the knot wall phenomenon of fine coal.
Preferably, including subsider, condensate pump outlet are gone back while being connected and remove subsider pipeline and vertical array tubular is gone to condense
Clean-up line at the top of the tubulation of device goes the import of the outlet connection subsider of subsider pipeline.
Preferably, the outlet of vacuum pump connects floss hole.
Embodiment there is provided a kind of coal gasifications to flash condensation process for second of the application, provides the true tank, vertical of dodging
Pipe bundle condenser, condensate drum, condensate pump, vacuum pump, the buck that coal gasification generates enter true sudden strain of a muscle tank, the true sudden strain of a muscle dodged in tank
Steam enters vertical array tubular condenser, flash steam flow downward after row in-tube condensation it is cooling after enter condensate drum, condensate liquid
A part of condensate liquid in condensate drum is delivered to the tubulation top inlet of vertical array tubular condenser, the top of condensate drum by pump
Gaseous phase outlet is connect with vacuum pump, and the fixed gas that can not be condensed in flash steam is extracted out.Flash system is maintained to be in negative pressure state,
Improve flash evaporation effect.
Preferably, subsider is provided, another part condensate liquid in condensate drum is delivered to subsider by condensate pump.
Preferably, the pressure really dodged in tank is -0.05~-0.01MPa.
Preferably, it is vented after the fixed gas extraction in vacuum pump condensate drum.
Embodiment there is provided a kind of fine coal gasification process for the third of the application, using above-mentioned condenser system or condensation
The buck that technique generates coal gasification is handled.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The technical solution of the application is described in detail in the embodiment of body.
Embodiment 1
A kind of coal gasification flashes condenser system, as shown in Figure 1, for convey coal gasification generate buck grey water pipe it
After be sequentially connected and true dodge tank 1, vertical array tubular condenser 2, condensate drum 3, condensate pump 4, vacuum pump 5, wherein the true tank 1 that dodges
The inlet communication of gaseous phase outlet and vertical array tubular condenser 2, the import of vertical array tubular condenser 2 connect with the import of condensate drum 3
It is logical, outlet at bottom and 4 inlet communication of condensate pump of condensate drum 3, the outlet connection of condensate pump 4 go subsider pipeline 6 and
Clean-up line 7 at the top of the tubulation of vertical array tubular condenser is removed, the outlet of clean-up line 7 at the top of the tubulation of vertical array tubular condenser is gone to
It is connected to the tubulation top inlet of vertical array tubular condenser 2, top exit and 5 inlet communication of vacuum pump of condensate drum 3.It is vertical
The tubulation top inlet of pipe bundle condenser 2 is equipped with distributor.
Its technique is：
It is respectively connected to cooling water in the inlet/outlet pipe of vertical array tubular condenser shell side, the true flash steam for dodging tank discharge is vertical
The row intraductal heat exchange of pipe bundle condenser cools down, and forms condensate liquid and enters condensate drum, then condensed liquid pump condenses a part
Liquid is sent outside, and another part condensate liquid is sent to the tubulation top inlet of vertical array tubular condenser, for flash steam to be pre-chilled, rinses row
It manages and generates a large amount of fine drops；On-condensible gas is discharged by vacuum pump at the top of condensate drum.
After improvement, the true separation pressure tank that dodges drops to -0.05MPa by 0.03MPa, and true tank exterior liquid temperature of dodging is by 108 DEG C
80 DEG C are reduced to, the service condition of subsequent sedimentation process is greatly improved.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of coal gasification flashes condenser system, characterized in that after the grey water pipe of coal gasification washing generation buck successively
It connects and really dodges tank, vertical array tubular condenser, condensate drum, condensate pump, vacuum pump, wherein really dodge the gaseous phase outlet of tank and stand
The tubulation top inlet of formula pipe bundle condenser is connected to, and tubulation outlet at bottom and the condensate drum import of vertical array tubular condenser connect
Logical, the liquid-phase outlet of condensate drum connects condensate pump import, and the tubulation of vertical array tubular condenser is removed in condensate pump outlet connection
Top clean-up line goes to the tubulation top of the outlet and vertical array tubular condenser of clean-up line at the top of the tubulation of vertical array tubular condenser
The gaseous phase outlet of portion's inlet communication, condensate drum connects vacuum pump inlet.
2. condenser system as described in claim 1, characterized in that the tubulation top inlet of vertical array tubular condenser is equipped with distribution
Device.
3. condenser system as described in claim 1, characterized in that vertical array tubular condenser tubulation is not less than φ using diameter
38mm tubulations.
4. condenser system as described in claim 1, characterized in that including subsider, condensate pump outlet is also while connection is gone
Subsider pipeline and the tubulation top clean-up line for removing vertical array tubular condenser, remove the outlet connection subsider of subsider pipeline
Import.
5. condenser system as described in claim 1, characterized in that the outlet of vacuum pump connects floss hole.
6. a kind of coal gasification flashes condensation process, it is characterized in that providing the true tank, vertical array tubular condenser, condensate drum, cold of dodging
Lime set pump, vacuum pump, the buck that coal gasification generates enter true sudden strain of a muscle tank, and the true flash steam dodged in tank enters vertical array tubular condensation
Device, flash steam flow downward after row in-tube condensation it is cooling after enter condensate drum, condensate pump is by one in condensate drum
The tubulation top inlet for dividing condensate liquid to be delivered to vertical array tubular condenser, top gas phase outlet and the vacuum pump of condensate drum connect
It connects, the fixed gas that can not be condensed in flash steam is extracted out.
7. condensation process as claimed in claim 6, characterized in that provide subsider, condensate pump will be another in condensate drum
A part of condensate liquid is delivered to subsider.
8. condensation process as claimed in claim 6, characterized in that the true pressure dodged in tank is -0.05~-0.01MPa.
9. condensation process as claimed in claim 6, characterized in that be vented after the fixed gas extraction in vacuum pump condensate drum.
10. a kind of fine coal gasification process, characterized in that using the Claims 1 to 5 any condenser system or claim
The buck that 6~9 any condensation process generate coal gasification is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608206.0A CN108795506B (en) | 2018-06-13 | 2018-06-13 | Pulverized coal gasification flash evaporation condensation system and process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608206.0A CN108795506B (en) | 2018-06-13 | 2018-06-13 | Pulverized coal gasification flash evaporation condensation system and process |
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| CN108795506A true CN108795506A (en) | 2018-11-13 |
| CN108795506B CN108795506B (en) | 2020-02-18 |
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| CN201810608206.0A Active CN108795506B (en) | 2018-06-13 | 2018-06-13 | Pulverized coal gasification flash evaporation condensation system and process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110760341A (en) * | 2019-10-28 | 2020-02-07 | 山西晋城无烟煤矿业集团有限责任公司 | Entrained flow bed coal gasification flash evaporation non-condensable gas purification system and method thereof |
| CN115721951A (en) * | 2022-10-28 | 2023-03-03 | 新疆心连心能源化工有限公司 | Gasification tail gas treatment device and using method thereof |
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| CN115721951A (en) * | 2022-10-28 | 2023-03-03 | 新疆心连心能源化工有限公司 | Gasification tail gas treatment device and using method thereof |
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| CN108795506B (en) | 2020-02-18 |
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