CN1023130C - Method and equipment for quenching and cleansing high-pressure gasified gas - Google Patents
Method and equipment for quenching and cleansing high-pressure gasified gas Download PDFInfo
- Publication number
- CN1023130C CN1023130C CN90101708A CN90101708A CN1023130C CN 1023130 C CN1023130 C CN 1023130C CN 90101708 A CN90101708 A CN 90101708A CN 90101708 A CN90101708 A CN 90101708A CN 1023130 C CN1023130 C CN 1023130C
- Authority
- CN
- China
- Prior art keywords
- gas
- pressure
- nozzle
- water
- jet
- 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 - Fee Related
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Classifications
-
- 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
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- 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
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
- C10J3/845—Quench rings
-
- 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
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
- C10K1/06—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials combined with spraying with water
-
- 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
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/101—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids with water only
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Industrial Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
Treating pressure-gasification gases, in partic. for their cooling, dust-freeing and water-vapour saturation, at a pressure of pref. 0.5-7.0 MPa and a temp. of pref. 700-2000 deg.C, by spray-quenching. Claims include several features of the method and of the appts. used. USE/ADVANTAGE - For cleaning gases produced by pressure gasification of powdered fuels, without the disadvantages (e.g. caking in the appts.) of other systems that are intended to overcome temp. and pressure limitations of earlier methods.
Description
The present invention relates to a kind of method and apparatus of handling coal gas, particularly simultaneously, carry out the cooling of coal gas, attached dirt and improve steam partial pressure, coal gas produces when powdered fuel is high-pressure gasified.
When under high pressure producing coal gas with powdered fuel, the mixed gas that contains dust has higher temperature.If the gasification of coal dust is the combustion reactions of carrying out under the temperature that is higher than the fuel ash fusing point, then its advantage is that heating gas is discharged with mobile ash (slag), afterwards, adds a kind of refrigerant.The cooling and the slag curing (granulating) of gas are carried out simultaneously.Preferably use water as refrigerant.This direct cooling of gas caused the local evaporation of water simultaneously, thereby improved the water vapour content in the cooling gas.
For cooling gas and/or local dedusting from gas, adopt washing machine at present, desire refrigerative the gas cast of water adverse current or spray in washing machine.Increase contact area by structure design or employing guidance device.For reaching this purpose, known use has the eddy current type washing machine or the rotary type washing machine of swivel arrangement.But under the system pressure condition with higher, should avoid movement parts.Cooling and local dedusting also can be used " in civilian Qiu " washing machine, but are mainly used in low pressure.
Owing to adopt these methods to bring some shortcomings (as be limited to lower pressure and temperature and thereby limited use range),, on principle, can be divided into two classes so proposed some other scheme.
First kind scheme utilizes its inwall that the cooling stave of skim water is arranged, and cooling tube immerses in the pond (drowning pipe principle), thereby has cooled off gas, and owing to gas and contacting of water are able to local dedusting (DD-WP145860; EP-0127878; DE-OS3151483).This cooling principle can utilize another additional cooling class to be replenished, additional cooling class can for example be a waterworks, horizontal plane top (EP-0127878) after it is located at the drowning pipe end and flows through diving outfit, and/or structurally take measures, it is located at drowning pipe end or gas guiding device place (DD-WP145860) by the pond.The shortcoming of this class principle is a unit water consumption rate height, and irrelevant with the power of reactor, because will constantly be cooled off by moisture film in the drowning pipe.Main shortcoming is, exists the physical possibility that thermal load surpasses permissible value in the drowning pipe all the time, and the reason that causes is that the drowning pipe inboard is adhered to water membrane all the time, and the gas-jet of heat is arranged at the opposite side of drowning pipe.The fine crack that thermal shocking produces can cause destroying gradually drowning pipe very soon, and thereby makes the apparatus overheat that is located at behind the expander.
The second class scheme adopts the waste heat boiler that is contained in the reactor back, to avoid losing energy contained in the gasification gas in a large number.Stick on the interchanger wall for the slag that prevents from first to be in flow state drips, sprayed into a certain amount of water before interchanger, the water yield only is used to make slag temperature be lower than temperature of solidification, and utilizes remaining heat content (DE-OS2556370 in the gasification gas; DE-OS2650512, DE-OS3201526).
The method and apparatus that is proposed among the DE-OS2556370 has significant defective, the refrigerant input pipe that is in synthesis gas stream central axis place that it is introduced, owing to directly contact with uncolled gasification gas, thereby formed great thermal load, this thermal load can cause input pipe to destroy, and, stick on the refrigerant input unit owing to still be in the slag granules of flow state at this place, tuyere arrangement was lost efficacy or work to be restricted, and thereby stick in the back to back cavity.
In the scheme that adherent danger also is present in DE-OS2650512 to be introduced, because this method of cooling can not the device after reactor in equably cooling heat and thereby be the viscid air-flow, bond and bond so can in part that has been cooled and interchanger, form.
Requiring gas flow rate in first cooling class less in DE-OS32011526 is 0.1 meter per second, however since much bigger in the gas velocity of reactor outlet, so caused intensive to reflux or eddy current.Should see that also the gas velocity when cooling viscid hot gas also makes this place that agglutinating danger takes place, because and desired final condition when being unrealized with existing method calculating thermal conduction.In the time must seeing in principle that the very significant utilization that improves contained enthalpy in the gasification gas is also taken into account, then the limited method and apparatus of the use range that is proposed here brings fatal shortcoming.
The objective of the invention is to seek a kind of method and apparatus, it can be cooled off the hot high pressure gas that contains dust effectively, local dedusting and improve steam partial pressure, this gas produces when preparing coal gas with powdered fuel in flue dust cloud body.
Task of the present invention is to propose a kind of spray cooling device that utilizes, to the gas that contains dust cool off, the method and apparatus of dedusting and raising steam partial pressure, this gas is under high pressure and the high temperature, and mainly between 0.5 to 7.0MPa, temperature is mainly between 700 ℃ to 2000 ℃ for pressure.
At above-mentioned task, the present invention takes following measure.The gas cooled off desiring and to purify is emitted from the gasification installation bottom, and it enters in the pressure assembly (expander) as free jet with the slag granules that is in flow state, and the diameter of this device cardinal principle is identical or be slightly larger than reactor.A pond is established in the expander bottom, and slag granules will be deposited in this pond.Can emit slag in accordance with regulations off and on, and emitting of top spray water to be principle to remain certain liquid level.Nozzle ring directly is contained in the dead band of free jet under the gas reactor outlet, in order to avoid stained nozzle.Fog nozzle should be mounted to and can spray with the hot gas jet Cheng Zhi that comes out from reactor with having, that is to say that the axis of free jet should meet at right angles with the axis of atomizer cone, or approaches the right angle.When for example free jet when being vertical, require the atomizer cone of nozzle mainly to have horizontal component, preferably become zero to 30 ° of angles with sea line.Radially the nozzle number of An Zhuaning should be selected like this, i.e. the injection of nozzle should be able to cover the outside surface of free jet fully.Otherwise can not obtain favourable cooling performance.Result of study shows that the injection component cooling performance parallel with gas-jet is poor.
Proved already, under the situation that sprays into refrigerant abreast, refrigerant extremely difficult with the fusion of viscid hot gas jet, so require to prolong cooling time, and thereby need the size of increase equipment.
Just, just can draw the required real time of heat exchange with existing general Calculation of Heat Transfer essentially horizontally when vertical gas-jet sprays into refrigerant.In addition, nozzle and corresponding atomizer cone thereof should be arranged to, and make the transition section lower edge between reactor and the water cooler, can directly not be subjected to the spray of refrigerant drop; Or adopt another kind of way, protect this lower edge with a water-cooled pipeline section.The determining of injection flow rate taken an examination to consider whole water yields all is evaporated, and remaining drop and dust particle is adhered together, and is sent in the pond.The pond is designed to bore the end at last reverse taper, with the dust that prevents to accumulate slag granules and separate out.
The effect of the water quench gas that the water yield is certain can be improved by the following method, promptly adopts two or more nozzle rings that is arranged above and below, rather than a nozzle ring.Do the reason that can produce effect like this and be, reduce by temperature behind the nozzle ring of topmost is existing, therefore the small droplets of nozzle ring can deeper be invaded the inside of gas-jet down, thereby has further improved the fusion effect of gas and spraying.In addition, another outer nozzle ring is set in the air whirl district on expander top, the dust removing effects in the time of can significantly improving the spray cooling.This nozzle ring should spray other cooling fluid vertically downward, has the nozzle of appropriate size can make drop bigger by employing.Adopt this device, can alleviate the burden of other cleaning apparatus greatly, maybe can substitute them.
Discharging gas from expander should be designed to, and makes gas flow vertically downward not disturb cooling and dedusting as far as possible, and can not produce short-circuit flow between the entrance and exit of gas.
This reaches by shrinking means for guiding gas obliquely, and the lower-most point of liner approximately is in the height place of gas discharge conection lower rim, and on the highest level face.The advantage of this place introduction method is that the water coolant demand has the adaptive faculty with load variations, therefore, compares and can conserve water with the submerged type scheme.
The present invention can be illustrated by embodiment shown in Figure 1.The hot gas coal gas that contains dust enters the expander 3 of pressing force Vessel Design through transition section 2 from high-pressure reactor 1.In expander, gas is by means of the directly cooling of nozzle ring 5,6 water sprays that is arranged above and below.The atomizer cone of nozzle 4 is perpendicular to the gas-jet axis, thereby causes strong cooling performance.Nozzle is mounted to and makes its atomizer cone can not arrive the lower edge of transition section 2.Gas continues to flow to the surface in pond 14 downwards, changes direction of motion there, and the vent connection 9 through being in the horizontal plane top leaves expander.Shrink in of height place, vent connection 9 place makes the member of inclination truncated cone by air-flow, force it to flow vertically downward, in case flow to the unsymmetrical short-circuit of outlet.
Be provided with the effect of nozzle ring 7 increase dedustings of nozzle 8, the larger-size atomizer cone of nozzle 8 downward liquid droplets by another.So the gas after truncated cone 12 places turn has obtained good dedusting.
The mixture flow of dust and water is gone in the pond 14, and solid composition is wherein intermittently emitted at adapter 10 places, and water is then discharged through taking over 13 via a pipe that is inserted in the pond.For the lower edge of transition section 2 that prevents heat is subjected to the direct spray of drop of upper spray nozzle ring 5, a water-cooled short sections 15 can for example be set, when changing load because the atomizer cone of nozzle 4 can change.
Symbol table
1 high-pressure reactor
2 transition sections
3 expanders
4 nozzles
5 nozzle rings
6 nozzle rings
7 nozzle rings
8 nozzles
9 vent connections
10 solid compositions are taken over
11 cones
12 truncated cones
13 drainings are taken over
14 ponds
15 cooled pipeline sections
Claims (2)
1, utilizes the method for spray cooling device handle high voltages gasification gas, especially for pressure between 0.5 to 7.0MPa, the gas of temperature between 700 ℃ to 2000 ℃, cool off, dedusting and make steam-laden method, it is characterized by: the thermal high gasification gas that contains dust as free jet is carried out quenching, water coolant is aimed at high-pressure gasified coal gas at various height, make the atomizer cone of water mainly have the radial component of spray, and be forced to enter vertically downward expander from all directions towards the gas jet; Should determine the water yield of importing like this, promptly both make steam-laden, can combine with impurity again, in case of necessity, make the additional cooling fluid that is parallel to gas-jet injection downwards in all its bearings round this high-pressure gasified coal gas.
2, enforcement comprises according to the equipment of the described method of claim 1: expander, spray equipment, the vent pipe of pond and various media, it is characterized by: between high-pressure reactor (1) and expander (3), transition section (2) with cooled pipeline section (15) protection is arranged, the nozzle ring (5 that is arranged above and below, 6) has the nozzle (4) that staggers each other and be provided with, nozzle is positioned at below the transition section (15), circlewise round the free jet of high-pressure gasified coal gas, establish another in case of necessity and be contained in nozzle ring (7) in the free jet recirculating zone, nozzle ring (7) has aims at the nozzle (8) that high-pressure gasified flow of gas direction is sprayed; In vent connection (9) region, air-flow shrinks through a truncated cone of cutting sth. askew (12), and pond (14) are positioned at vent connection (9) below.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DDWPC10J/327128-0 | 1989-03-31 | ||
| DD32712889A DD280975B3 (en) | 1989-03-31 | 1989-03-31 | METHOD AND DEVICE FOR COOLING AND CLEANING GASES LOADED WITH SLUDGE OR DUST |
| DEWPC10J/3271280 | 1989-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1045990A CN1045990A (en) | 1990-10-10 |
| CN1023130C true CN1023130C (en) | 1993-12-15 |
Family
ID=5608100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90101708A Expired - Fee Related CN1023130C (en) | 1989-03-31 | 1990-03-28 | Method and equipment for quenching and cleansing high-pressure gasified gas |
Country Status (7)
| Country | Link |
|---|---|
| CN (1) | CN1023130C (en) |
| AT (1) | AT404468B (en) |
| AU (1) | AU5246990A (en) |
| CS (1) | CS275922B6 (en) |
| DD (1) | DD280975B3 (en) |
| DE (1) | DE4001739A1 (en) |
| RU (1) | RU1829952C (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59301475D1 (en) * | 1993-03-16 | 1996-02-29 | Krupp Koppers Gmbh | Gasification apparatus for the pressure gasification of fine-particle fuels |
| EP0616022B1 (en) * | 1993-03-16 | 1995-09-13 | Krupp Koppers GmbH | Process for pressure gasification of fine particulate fuels |
| DE19714376C1 (en) * | 1997-04-08 | 1999-01-21 | Gutehoffnungshuette Man | Synthesis gas generator with combustion and quench chamber |
| DE202005021659U1 (en) * | 2005-10-07 | 2010-01-14 | Siemens Aktiengesellschaft | Device for high-flow entrainment gasifier |
| DE102007006988C5 (en) * | 2007-02-07 | 2014-04-17 | Technische Universität Bergakademie Freiberg | Process and apparatus for converting raw gas from coal gasification |
| DE102007006984B4 (en) * | 2007-02-07 | 2009-03-19 | Technische Universität Bergakademie Freiberg | Process and apparatus for the conversion of raw gases in the flow stream gasification |
| DE102007027601A1 (en) | 2007-06-12 | 2008-12-18 | Uhde Gmbh | Production and cooling of gaseous coal gasification products |
| DE102007042543A1 (en) | 2007-09-07 | 2009-03-12 | Choren Industries Gmbh | Process and apparatus for treating laden hot gas |
| DE102008012734A1 (en) | 2008-03-05 | 2009-09-10 | Uhde Gmbh | Method for obtaining synthesis gas by gasification of liquid or finely comminuted solid fuels, involves producing synthesis gas in reaction chamber arranged over reactor, in which ingredients are supplied |
| CA2699714C (en) | 2007-09-18 | 2016-04-19 | Uhde Gmbh | Gasification reactor and process for entrained-flow gasification |
| DE102007044726A1 (en) | 2007-09-18 | 2009-03-19 | Uhde Gmbh | Synthesis gas producing method, involves drying and cooling synthesis gas in chamber, arranging water bath below another chamber, and extracting produced and cooled synthesis gas from pressure container below or lateral to latter chamber |
| CN101235323B (en) * | 2008-02-01 | 2011-04-20 | 丹东市承天新能源开发有限公司 | Water curtain sprinkling purifier |
| EP2528998B8 (en) * | 2010-01-25 | 2018-11-14 | Air Products and Chemicals, Inc. | Gasification reactor and process |
| DE102010033323A1 (en) | 2010-08-04 | 2012-02-09 | Siemens Aktiengesellschaft | Device for quenching raw gas of entrained flow gasifier, has quencher that is arranged under reaction room, where rings of quench nozzles are arranged for injecting quench water in direction in raw gas around guide pipe |
| EP2616529B1 (en) | 2010-09-16 | 2018-11-07 | CCG Energy Technology Company Ltd. | Device and use of the device for treating a hot gas flow containing slag |
| DE102010045482A1 (en) | 2010-09-16 | 2012-03-22 | Choren Industries Gmbh | Slag treatment device for coal gasifier plant, has dip tube with inner and outer pipes between which annular gap is formed and connected with annular coolant chamber, and coolant feed pipe connected at lower portion of dip tube |
| DE102013003413A1 (en) | 2013-02-28 | 2014-09-11 | Linde Aktiengesellschaft | Method and device for separating liquid slag particles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1908334A (en) * | 1931-03-12 | 1933-05-09 | Charles A Etem | Air filter |
| US3353335A (en) * | 1965-10-19 | 1967-11-21 | Edward A Caballcro | Exhaust gas treatment |
| AU425585B2 (en) * | 1966-11-01 | 1972-06-30 | Metallgesellschaft Aktiengesellschaft | Apparatus forthe wet treatment of dust-laden gases |
| US3471138A (en) * | 1967-05-17 | 1969-10-07 | Chemical Construction Corp | Integral gas quencher for tilting furnaces |
| DE3601786C2 (en) * | 1986-01-22 | 1996-03-07 | Krupp Koppers Gmbh | Device for cooling the hot production gas emerging from a gasification reactor operated under increased pressure |
-
1989
- 1989-03-31 DD DD32712889A patent/DD280975B3/en active IP Right Grant
-
1990
- 1990-01-22 DE DE19904001739 patent/DE4001739A1/en not_active Withdrawn
- 1990-02-01 AT AT21990A patent/AT404468B/en not_active IP Right Cessation
- 1990-02-13 CS CS68290A patent/CS275922B6/en unknown
- 1990-03-28 CN CN90101708A patent/CN1023130C/en not_active Expired - Fee Related
- 1990-03-29 RU SU904743528A patent/RU1829952C/en active
- 1990-03-30 AU AU52469/90A patent/AU5246990A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| AU5246990A (en) | 1990-10-04 |
| DE4001739A1 (en) | 1990-10-04 |
| AT404468B (en) | 1998-11-25 |
| DD280975A1 (en) | 1990-07-25 |
| CS275922B6 (en) | 1992-03-18 |
| RU1829952C (en) | 1993-07-23 |
| CN1045990A (en) | 1990-10-10 |
| CS9000682A2 (en) | 1991-07-16 |
| ATA21990A (en) | 1998-04-15 |
| DD280975B3 (en) | 1993-03-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Applicant after: NoELL - DBI energy technologies Ltd Applicant before: Deutsche Fuel Research Institute Ltd |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: GERMAN FUEL RESEARCH INST. CO., LTD. TO: NOELL DBI ENERGY TECHNOLOGY CO., LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |