CN112322356A - Gasifier synthesis gas spray set and down water chilling gasifier - Google Patents
Gasifier synthesis gas spray set and down water chilling gasifier Download PDFInfo
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- CN112322356A CN112322356A CN202011160749.4A CN202011160749A CN112322356A CN 112322356 A CN112322356 A CN 112322356A CN 202011160749 A CN202011160749 A CN 202011160749A CN 112322356 A CN112322356 A CN 112322356A
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- spraying
- spray
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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
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
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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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1615—Stripping
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a gasifier synthesis gas spray device and a downlink water chilling gasifier, wherein the gasifier synthesis gas spray device comprises: the primary spraying unit is arranged in the middle of the inner cavity of the gasification furnace shell and is used for performing primary spraying purification treatment on the upward synthesis gas; and the secondary spraying unit is arranged above the synthesis gas outlet of the gasification furnace shell and is used for performing secondary spraying purification treatment on the synthesis gas which flows out of the gasification furnace after the primary spraying purification treatment. The downward water chilling gasification furnace adopts the gasification furnace synthesis gas spraying device. The invention adopts the combined action of the first-stage spraying unit and the second-stage spraying unit, can carry out twice spraying, ash removal and purification on the synthesis gas, and maximally reduces the problem of ash in the synthesis gas. Through the secondary ash removal treatment of the invention, the fly ash in the synthesis gas can be removed as much as possible, and the fly ash is settled in the slag pool again, so that the fouling and blockage of the fly ash in subsequent equipment are avoided, and the long-period operation assistance of the gasification device is realized.
Description
Technical Field
The invention relates to the technical field of coal gasification, in particular to a gasifier synthesis gas spraying device and a downward water chilling gasifier.
Background
The high-temperature synthetic gas is quenched by the quenching ring water from the gasification chamber and flows downwards into a descending pipe, is washed by water bath and then rises into the quenching chamber, and finally is sent into a downstream reaction device through a synthetic gas outlet connecting pipe. Although the synthesis gas is primarily washed through a chilling ring and a slag pool of the gasification furnace, the synthesis gas usually carries a large amount of fine ash and is difficult to wash, fine fly ash particles are easy to accumulate in downstream devices such as a Venturi scrubber and a washing tower after long-time operation, and scale formation and blockage of each device are easy to cause due to the fact that the fine fly ash particles are difficult to wash, and long-period operation of the gasification device is severely restricted.
In the existing gasification device, a baffle plate is arranged at a synthetic gas outlet in the prior art, fly ash particles in the synthetic gas are removed by utilizing the return flow of the synthetic gas, but after long-term operation, the bottom of the baffle plate has a dust accumulation condition, so that the synthetic gas outlet is blocked; there is also patent side to increase spray set between synthetic gas exit pipeline and washing equipment, but spray set sprays intensity limitedly, and gasifier synthesizer exit pipeline interior gas velocity of flow is great, causes easily that the liquid that sprays flows along with the air current, reduces and sprays the ash removal effect.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a gasifier synthesis gas spraying device with better spraying effect and a downward water chilling gasifier.
To this end, an aspect of the present invention provides a gasifier syngas spray apparatus, comprising:
the primary spraying unit is arranged in the middle of the inner cavity of the gasification furnace shell and is used for performing primary spraying purification treatment on the upward synthesis gas;
and the secondary spraying unit is arranged above the synthesis gas outlet of the gasification furnace shell and is used for performing secondary spraying purification treatment on the synthesis gas which flows out of the gasification furnace after the primary spraying purification treatment.
According to one embodiment of the synthetic gas spraying device of the gasification furnace, the primary spraying unit comprises a primary spraying pipe annularly arranged in the inner cavity and a plurality of first inlet connecting pipes connected with the primary spraying pipe, and a plurality of rows of first spraying holes are formed in the middle lower part of the primary spraying pipe at intervals.
According to one embodiment of the gasification furnace synthesis gas spraying device, each row of first spraying holes comprise a plurality of first spraying holes which are arranged at intervals along the middle lower part of the cross section of the primary spraying pipe.
According to one embodiment of the gasifier synthesis gas spray device, the number of the first spray holes in each row of the first spray holes is at least three, and the first spray holes are arranged at least at the bottom and two horizontal sides of the cross section of the primary spray pipe.
According to one embodiment of the gasifier syngas spraying device, the primary spraying unit is arranged above a plurality of layers of bubble breaking units arranged in an inner cavity of a gasifier shell, the plurality of layers of bubble breaking units are arranged above a slag pool, and the slag pool can submerge a downcomer outlet for conveying syngas.
According to one embodiment of the synthetic gas spraying device of the gasification furnace, the secondary spraying unit comprises a second inlet connecting pipe, and a secondary spraying pipe adjusting section and a secondary spraying pipe which are sequentially connected with the second inlet connecting pipe, wherein a plurality of second spraying holes are formed in the lower part of the secondary spraying pipe at intervals.
According to one embodiment of the synthetic gas spraying device of the gasification furnace, the secondary spraying pipe adjusting section at least comprises an adjusting elbow and an adjusting straight section, the adjusting elbow and the adjusting straight section are spliced to form the secondary spraying pipe adjusting section, and the spraying angle of the secondary spraying pipe can be adjusted.
According to one embodiment of the gasifier syngas spray apparatus of the present invention, the secondary spray pipe is disposed above the syngas outlet of the gasifier shell and has a length covering a width of the syngas outlet and an arc matching the gasifier shell.
The invention also provides a downward water chilling gasification furnace, which adopts the gasification furnace synthesis gas spraying device.
The invention adopts the combined action of the first-stage spraying unit and the second-stage spraying unit, can carry out twice spraying, ash removal and purification on the synthesis gas, and maximally reduces the problem of ash in the synthesis gas. Through the secondary ash removal treatment of the invention, the fly ash in the synthesis gas can be removed as much as possible, and the fly ash is settled in the slag pool again, so that the fouling and blockage of the fly ash in subsequent equipment are avoided, and the long-period operation assistance of the gasification device is realized.
Drawings
Fig. 1 shows a schematic structural view of a gasifier syngas spray arrangement according to an exemplary embodiment of the present invention.
Fig. 2A is a schematic cross-sectional structure diagram of a primary spray pipe in a gasifier syngas spray apparatus according to an exemplary embodiment of the present invention, fig. 2B is a schematic top-view structure diagram of a secondary spray pipe and a secondary spray pipe adjustment section in the gasifier syngas spray apparatus according to an exemplary embodiment of the present invention, and fig. 2C is a schematic cross-sectional structure diagram of a secondary spray pipe in the gasifier syngas spray apparatus according to an exemplary embodiment of the present invention.
Description of reference numerals:
1-a downcomer, 2-a first-stage spray pipe, 3-a first inlet connecting pipe, 4-a second-stage spray pipe, 5-an adjusting elbow, 6-an adjusting straight section, 7-a synthesis gas outlet, 8-a multilayer bubble breaking unit, 9-a slag bath, 10-a shell and 11-a second inlet connecting pipe.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Fig. 1 shows a schematic structural view of a gasifier syngas spray arrangement according to an exemplary embodiment of the present invention.
As shown in fig. 1, according to an exemplary embodiment of the present invention, the gasifier syngas spraying apparatus includes a primary spraying unit and a secondary spraying unit. The primary spraying unit is arranged in the middle of an inner cavity of the gasification furnace shell 10 and is used for performing primary spraying purification treatment on the upward synthesis gas; the secondary spraying unit is arranged above the synthesis gas outlet 7 of the gasification furnace shell 10 and is used for carrying out secondary spraying purification treatment on the synthesis gas which is subjected to the primary spraying purification treatment and flows out of the gasification furnace.
The gasification furnace also comprises a shell 10, a downcomer 1 and a slag pool 9, wherein the downcomer 1 is arranged in the inner cavity of the shell 10 and sends chilled synthetic gas into the slag pool 9, and the outlet of the downcomer 1 is submerged into the slag pool 9, so that the synthetic gas can turn back and go upwards after being sent into the slag pool 9.
The inner cavity of the shell 10 is also provided with a plurality of layers of bubble breaking units 8, and the plurality of layers of bubble breaking units 8 are arranged above the slag pool 9 and used for preliminarily removing ash in the synthesis gas. The multi-layer bubble breaking unit 8 can break large bubbles carried in rising synthesis gas, and ash carried by the large bubbles is avoided.
The first-stage spraying unit comprises a first-stage spraying pipe 2 annularly arranged in the inner cavity and a plurality of first inlet connecting pipes 3 connected with the first-stage spraying pipe 2, and the first inlet connecting pipes 3 are used for sending high-pressure water into the first-stage spraying pipe 2.
FIG. 2A shows a schematic cross-sectional structure diagram of a primary spray pipe in a gasifier syngas spray apparatus according to an exemplary embodiment of the invention
As shown in fig. 2A, a plurality of rows of first spraying holes are formed in the middle lower portion of the first-stage spraying pipe 2 at intervals, and each row of first spraying holes includes a plurality of first spraying holes formed along the middle lower portion of the cross section of the first-stage spraying pipe at intervals.
Preferably, the number of the first spray holes in each row of the first spray holes is at least three, and the first spray holes are arranged at least at the bottom of the cross section and at two horizontal sides of the primary spray pipe, the diameter and the number of the first spray holes and the spray angle alpha can be determined according to the ash-carrying condition of the synthesis gas in practical engineering, for example, when the number of the first spray holes is 3, the first spray holes are arranged at intervals of 90 degrees to ensure that the synthesis gas coming out from all directions can be in a spray range.
In order to enable the synthesis gas after the primary deashing by the multi-layer bubble breaking units 8 to be subjected to the primary spraying purification treatment, the primary spraying units are arranged above the multi-layer bubble breaking units 8 arranged in the inner cavity of the gasification furnace shell, particularly above the uppermost bubble breaking unit, and are circumferentially arranged. Through adjusting the number and the angle of the holes on the primary spray pipe, the primary spray purification treatment can be completed after all the synthesis gas coming out of the bubble breaking unit passes through the primary spray unit
When the synthesis gas goes up into the synthesis gas outlet 7 again, a secondary spraying unit is arranged above the synthesis gas outlet to carry out secondary spraying purification treatment.
Fig. 2B shows a schematic top-view structure diagram of the secondary spray pipe and the secondary spray pipe adjustment section in the gasifier syngas spray apparatus according to an exemplary embodiment of the present invention, and fig. 2C shows a schematic cross-sectional structure diagram of the secondary spray pipe in the gasifier syngas spray apparatus according to an exemplary embodiment of the present invention.
As shown in fig. 2B and 2C, the secondary spray unit of the present invention includes a second inlet connection pipe 11, and a secondary spray pipe adjustment section and a secondary spray pipe 4 sequentially connected to the second inlet connection pipe 11, wherein a plurality of second spray holes are formed at intervals on the lower portion of the secondary spray pipe 4, the diameter and number of the second spray holes and the spray angle β can be determined according to the ash-carrying condition of the syngas in the actual engineering, and the second inlet connection pipe 11 is used for sending high-pressure water into the secondary spray pipe.
The secondary spray pipe adjusting section at least comprises an adjusting elbow 5 and an adjusting straight section 6, the adjusting elbow 5 and the adjusting straight section 6 are spliced to form the secondary spray pipe adjusting section, and the spraying angle of the secondary spray pipe 4 can be adjusted. For example, according to the actual ash removal condition, the spraying angle β of the secondary spraying pipe can be adjusted by adjusting the adjusting straight section 6 and the adjusting elbow 5 in the furnace shutdown or maintenance stage of the gasification furnace, so as to achieve the best ash removal and purification effect.
Preferably, the secondary shower 4 is disposed above the syngas outlet 7 of the gasifier shell 10 and has a length covering the width of the syngas outlet 7 and an arc matching the gasifier shell 10. Through adjusting the number of the holes and the hole angles on the secondary spraying pipe, the synthesis gas entering the synthesis gas outlet can be ensured to be subjected to secondary spraying purification treatment.
Compared with the baffle plate arranged at the outlet of the synthesis gas, the invention can avoid the accumulation and the blockage of the fly ash on the spray holes by continuously feeding flowing high-pressure water in the primary spray unit and the secondary spray unit. Compared with a spraying device arranged between the synthesis outlet pipeline and the washing equipment, the synthesis gas flow speed in the inner cavity of the shell is lower than the flow speed in the synthesis gas outlet pipeline, the spraying effect is better, and the sprayed fly ash can flow downwards into a slag pool to be prevented from being blown into a downstream gasification device.
The invention also provides a downward water chilling gasification furnace, and particularly provides a gasification furnace synthesis gas spraying device which has a good spraying and ash removing effect. Through the secondary spraying ash removal treatment, the fly ash in the synthesis gas can be removed as much as possible and is settled into the slag pool again, so that the fouling and blockage of the fly ash in subsequent equipment are avoided, and the long-period operation assistance of the gasification device is realized.
The invention is not limited to the specific embodiments described above, but extends to any novel feature or any novel combination of features disclosed herein, or to any novel method or process steps, or any novel combination of steps, which are disclosed.
Claims (9)
1. The utility model provides a gasifier synthetic gas spray set which characterized in that includes:
the primary spraying unit is arranged in the middle of the inner cavity of the gasification furnace shell and is used for performing primary spraying purification treatment on the upward synthesis gas;
and the secondary spraying unit is arranged above the synthesis gas outlet of the gasification furnace shell and is used for performing secondary spraying purification treatment on the synthesis gas which flows out of the gasification furnace after the primary spraying purification treatment.
2. The gasification furnace synthesis gas spray device of claim 1, wherein the primary spray unit comprises a primary spray pipe annularly arranged in the inner cavity and a plurality of first inlet connecting pipes connected with the primary spray pipe, and a plurality of rows of first spray holes are formed in the middle lower part of the primary spray pipe at intervals.
3. The gasifier syngas spraying apparatus of claim 2, wherein each row of first spraying holes comprises a plurality of first spraying holes spaced along a lower middle portion of a cross section of the primary spraying pipe.
4. The gasifier syngas spraying device of claim 3, wherein the number of first spray holes in each row of first spray holes is at least three and is arranged at least at the bottom and horizontal sides of the cross section of the primary spray pipe.
5. The gasifier syngas spray arrangement of claim 1, wherein the primary spray unit is arranged above a multi-layer bubble breaking unit disposed in the inner cavity of the gasifier housing, the multi-layer bubble breaking unit is arranged above a slag bath and the slag bath is capable of submerging a downcomer outlet for conveying syngas.
6. The gasification furnace synthesis gas spray device according to claim 1, wherein the secondary spray unit comprises a second inlet connection pipe, and a secondary spray pipe adjustment section and a secondary spray pipe which are sequentially connected with the second inlet connection pipe, and a plurality of second spray holes are formed at intervals on the lower part of the secondary spray pipe.
7. The gasifier syngas spraying device as claimed in claim 6, wherein the secondary spray pipe adjusting section comprises at least an adjusting elbow and an adjusting straight section, and the adjusting elbow and the adjusting straight section are spliced to form the secondary spray pipe adjusting section and can adjust the spray angle of the secondary spray pipe.
8. The gasifier syngas spray arrangement of claim 6, wherein the secondary spray pipe is arranged above a syngas outlet of a gasifier housing and has a length that covers a width of the syngas outlet and an arc that matches the gasifier housing.
9. A downward water quench gasifier characterized in that the gasifier syngas spray apparatus of any of claims 1 to 8 is employed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160749.4A CN112322356A (en) | 2020-10-27 | 2020-10-27 | Gasifier synthesis gas spray set and down water chilling gasifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160749.4A CN112322356A (en) | 2020-10-27 | 2020-10-27 | Gasifier synthesis gas spray set and down water chilling gasifier |
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| Publication Number | Publication Date |
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| CN112322356A true CN112322356A (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011160749.4A Pending CN112322356A (en) | 2020-10-27 | 2020-10-27 | Gasifier synthesis gas spray set and down water chilling gasifier |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014201890A1 (en) * | 2014-02-03 | 2015-08-06 | Siemens Aktiengesellschaft | Cooling and washing of a raw gas from the entrained flow gasification |
| CN105802675A (en) * | 2016-05-30 | 2016-07-27 | 惠生（南京）清洁能源股份有限公司 | Method for removing fly ash at synthesized gas outlet of gasification furnace |
| CN209397166U (en) * | 2018-11-28 | 2019-09-17 | 新奥科技发展有限公司 | Purification device |
-
2020
- 2020-10-27 CN CN202011160749.4A patent/CN112322356A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014201890A1 (en) * | 2014-02-03 | 2015-08-06 | Siemens Aktiengesellschaft | Cooling and washing of a raw gas from the entrained flow gasification |
| CN105802675A (en) * | 2016-05-30 | 2016-07-27 | 惠生（南京）清洁能源股份有限公司 | Method for removing fly ash at synthesized gas outlet of gasification furnace |
| CN209397166U (en) * | 2018-11-28 | 2019-09-17 | 新奥科技发展有限公司 | Purification device |
Non-Patent Citations (1)
| Title |
|---|
| 杜波等: "《企业职业健康管理教程》", 31 July 2016, 中国矿业大学出版社 * |
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Application publication date: 20210205 |