CN104479753A - Pulverized coal conveying device and method - Google Patents
Pulverized coal conveying device and method Download PDFInfo
- Publication number
- CN104479753A CN104479753A CN201410741586.7A CN201410741586A CN104479753A CN 104479753 A CN104479753 A CN 104479753A CN 201410741586 A CN201410741586 A CN 201410741586A CN 104479753 A CN104479753 A CN 104479753A
- Authority
- CN
- China
- Prior art keywords
- coal dust
- lock hopper
- valve
- coal
- pulverized coal
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002817 coal dust Substances 0.000 claims description 120
- 239000000843 powder Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000003306 harvesting Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 3
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 5
- 238000002309 gasification Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 235000021050 feed intake Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
- C10J3/506—Fuel charging devices for entrained flow gasifiers
-
- 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
Abstract
The invention discloses a pulverized coal conveying device and method. The pulverized coal conveying device comprises a charging tank, wherein three pulverized coal locking hoppers are arranged above the charging tank, each pulverized coal locking hopper is connected with the top of the charging tank through a discharging pipe, a discharging valve is arranged on the discharging pipe, one pulverized coal locking hopper is communicated with the charging tank through a tank body equalizing pipe, a tank body balance valve is arranged on the tank body equalizing pipe, locking hopper equalizing pipes are connected among the three pulverized coal locking hoppers, locking hopper equalizing valves are arranged on locking hopper equalizing pipes connected into the pulverized coal locking hoppers; a charging pipe is arranged at the bottom of the charging tank, and a charging valve is arranged on the charging pipe. According to the pulverized coal conveying device and method, nitrogen is charged and pressed in the locking hoppers and are fully utilized, so that the consumption of system nitrogen amount is effectively reduced, and relatively high economic benefit is achieved; a system is used for performing online pulverized coal circulation before charging, so that the charging stability is ensured; pulverized coal flow can be preferably controlled, the problem of instable system caused by fluctuation of pulverized coal is preferably overcome, and relatively high safe production value is achieved.
Description
Technical field
The present invention relates to chemical field, especially a kind of pulverized coal conveying device and method.
Background technology
It is strong that pressurized air flow bed gasification technology possesses separate unit processing power, the advantages such as efficiency of carbon conversion is high, and load adjustment ability is good, is current one of most advanced gasification technology in the world, represents the developing direction of gasification technology from now on.This technology charging has dry method and wet feeding two kinds of forms.The principal mode of wet feeding during coal water slurry, owing to first the water in coal slurry all will be gasified when coal water slurry is reacted, therefore thermo-efficiency is not high, and temperature of reaction is low, and oxygen consumption is high.Dry feed is by high pressure gas pulverized coal conveying, and react with pure oxygen gas, principal feature is that adaptability to raw material is wide, cold gas efficiency is high, efficiency of carbon conversion is high, is the main trend in the future developed.
But present stage, dry-coal feeding generally regulated pulverized coal flow by pressure reduction, pulverized coal flow poor stability, and adjusting function is also bad, was badly in need of a kind of novel coal dust carrying method.
Summary of the invention
The object of the invention is: provide a kind of pulverized coal conveying device and method, it is simple, effectively, what energy was stable carries out coal dust conveying, to overcome the deficiencies in the prior art.
The present invention is achieved in that pulverized coal conveying device, comprise feed pot, three coal dust lock hoppers are provided with above feed pot, each coal dust lock hopper is all connected with the top of feed pot by tremie pipe, tremie pipe is provided with baiting valve, and one of them coal dust lock hopper is communicated with feed pot by tank body equaler, and tank body equaler is provided with tank body equilibrium valve, be connected with lock hopper equaler between three coal dust lock hoppers, the lock hopper equaler of each coal dust lock hopper of access is provided with lock hopper equalizing valve; Be provided with filling tube in the bottom of feed pot, filling tube is provided with reinforced valve.
Filling tube is provided with T-valve, T-valve is connected with circulation tube, circulation tube is communicated with coal dust lock hopper.
Pulverized coal flow variable valve is provided with between the reinforced valve and T-valve of filling tube.
Bottom in feed pot is provided with agitator.
Fine coal carrying method, after first coal dust lock hopper harvests coal dust, start pressurising, make the boost in pressure of this coal dust lock hopper to identical with the pressure of feed pot, open tank body equilibrium valve, coal dust lock hopper is made to remain consistent with the pressure of feed pot, open baiting valve, coal dust in coal dust lock hopper is delivered in feed pot, after complete under coal dust in coal dust lock hopper, close baiting valve and tank body equilibrium valve, coal dust lock hopper and feed pot are isolated, open the lock hopper equalizing valve of first coal dust lock hopper and second coal dust lock hopper again, first coal dust lock hopper is all pressed to completing second coal dust lock hopper after receiving powder, after two lock hopper pressure are consistent, close lock hopper equalizing valve, first coal dust lock hopper starts to carry out pressure release, unload to normal pressure, start again to receive powder, second coal dust lock hopper then opens baiting valve and tank body equilibrium valve, start blanking, after second coal dust lock hopper completes blanking, 3rd coal dust lock hopper repeats by above-mentioned steps, three coal dust lock hoppers perform above-mentioned action in turn, ensure the material level of powder coal charge tank.
Remain stirring in feed pot, stablize pulverized coal flow; Coal dust is delivered in vapourizing furnace by the filling tube of feed vessel base, is delivered in coal dust lock hopper by coal dust before vapourizing furnace feeds intake by switching coal dust T-valve and circulation tube.Now coal dust lock hopper pressure filling can be depressed into the normal operating pressure of vapourizing furnace, so just well can simulate the running condition of coal dust under actual condition, in the process of circulation, by regulating pulverized coal flow variable valve, control pulverized coal flow, after pulverized coal flow is stable, switch pulverized coal flow T-valve, coal dust is carried in vapourizing furnace, completes the work fed intake, in normal operation, system load increase and decrease, all complete by pulverized coal flow variable valve, well control system cloud gray model load, the system that stabilizes generates.
Owing to have employed technique scheme, compared with prior art, the present invention passes through at coal dust lock hopper and feed pot, and between coal dust lock hopper, equaler line is set, lock hopper pressurising nitrogen can be obtained make full use of, effectively decrease the consumption of system nitrogen amount, there is higher economic benefit; And pass through coal dust T-valve and the coal dust circulation line of setting, make system before feeding intake, carry out online coal dust circulation, ensure that the stability fed intake; By the coal dust variable valve arranged, pulverized coal flow can be controlled preferably, preferably resolve the system instability caused because coal dust fluctuates, there is higher safety in production and be worth.Deft design of the present invention, with low cost, result of use is good.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
Embodiment
Embodiments of the invention: the structure of pulverized coal conveying device as shown in Figure 1, comprise feed pot 1, three coal dust lock hoppers 2 are provided with above feed pot 1, each coal dust lock hopper 2 is all connected by the top of tremie pipe 7 with feed pot 1, tremie pipe 7 is provided with baiting valve 8, one of them coal dust lock hopper 2 is communicated with feed pot 1 by tank body equaler 3, tank body equaler 3 is provided with tank body equilibrium valve 4, be connected with lock hopper equaler 5 between three coal dust lock hoppers 2, the lock hopper equaler 5 of each coal dust lock hopper 2 of access is provided with lock hopper equalizing valve 6; Be provided with filling tube 9 in the bottom of feed pot 1, filling tube 9 is provided with reinforced valve 12; Filling tube 9 is provided with T-valve 10, T-valve 10 is connected with circulation tube 11, circulation tube 11 is communicated with coal dust lock hopper 2; Pulverized coal flow variable valve 13 is provided with between the reinforced valve 12 and T-valve 10 of filling tube 9; Bottom in feed pot 1 is provided with agitator 14.
Fine coal carrying method, after first coal dust lock hopper 2 harvests coal dust, start pressurising, make the boost in pressure of this coal dust lock hopper 2 to identical with the pressure of feed pot 1, open tank body equilibrium valve 4, coal dust lock hopper 2 is made to remain consistent with the pressure of feed pot 2, open baiting valve 8, by in coal dust lock hopper 2 coal dust deliver in feed pot 1, after complete under coal dust in coal dust lock hopper 2, close baiting valve 8 and tank body equilibrium valve 4, coal dust lock hopper 2 and feed pot 1 are isolated, open the lock hopper equalizing valve 6 of first coal dust lock hopper 2 and second coal dust lock hopper 2 again, first coal dust lock hopper 2 is all pressed to completing second coal dust lock hopper 2 after receiving powder, after two lock hopper pressure are consistent, close lock hopper equalizing valve 6, first coal dust lock hopper 2 starts to carry out pressure release, unload to normal pressure, start again to receive powder, second coal dust lock hopper 2 then opens baiting valve 8 and tank body equilibrium valve 4, start blanking, after second coal dust lock hopper 2 completes blanking, 3rd coal dust lock hopper 2 repeats by above-mentioned steps, three coal dust lock hoppers 2 perform above-mentioned action in turn, ensure the material level of powder coal charge tank, remain stirring in feed pot 1, stablize pulverized coal flow, coal dust is delivered in vapourizing furnace by the filling tube 9 bottom feed pot 1, is delivered in coal dust lock hopper 2 by coal dust before vapourizing furnace feeds intake by switching coal dust T-valve 10 and circulation tube 11.
Process the powdered coal pressuring gasified device of Quench type of 1200 tons of coals one day, vapor pressure is 4.0MPa, and gasification temperature is 1600 DEG C, and the minimum coal feeding amount of vapourizing furnace is 36t/h, and the highest coal feeding amount is 60t/h, and feed pot 1 working pressure is 4.6MPa; After coal dust takes in first coal dust lock hopper 2, this coal dust lock hopper 2 is pressurized to 4.6MPa, now open the tank body equilibrium valve 4 of between coal dust lock hopper 2 and feed pot 1, after coal dust lock hopper 2 and feed pot 1 maintain pressure equilibrium, open coal dust lock hopper 2 baiting valve 8, coal dust lock hopper 2 is lower powder in feed pot, treats that the level gage of coal dust lock hopper 2 is shown as zero, low disclose that bit switch triggers after, close coal dust lock hopper 2 baiting valve 8 and tank body equilibrium valve 4; After first coal dust lock hopper 2 and feed pot 1 are isolated, the lock hopper equalizing valve 6 of first coal dust lock hopper 2 and second coal dust lock hopper 2, first lock hopper coal dust lock hopper 2 is all pressed to second coal dust lock hopper 2, when two lock hopper pressure are identical, close their lock hopper equalizing valve 6, first coal dust lock hopper 2 prepares to unload to receive powder to normal pressure, after second coal dust lock hopper 2 continues to be pressurized to 4.6MPa, and lower powder in feed pot; After 3rd coal dust lock hopper is pressurized to 4.0MPa, open coal dust T-valve 10, coal dust leads to the 3rd coal dust lock hopper 2 from feed pot 1, open pulverized coal flow variable valve 13, regulate pulverized coal flow, when three coal pipe linear flow rates are stabilized in 10t/h, switch coal dust T-valve 10, coal dust is switched to vapourizing furnace by coal dust lock hopper 2, and vapourizing furnace starts to feed intake; Feed intake successfully, regulate pulverized coal flow variable valve 13, improve pulverized coal flow gradually, after pulverized coal flow is stabilized in 46t/h, variable valve is thrown automatically, pulverized coal flow realizes automatically regulating, and three coal dust lock hoppers 2 lower powder in powder coal charge tank in turn, keeps powder coal charge tank material level to remain on more than 80% simultaneously.
Claims (6)
1. a pulverized coal conveying device, comprise feed pot (1), it is characterized in that: be provided with three coal dust lock hoppers (2) in feed pot (1) top, each coal dust lock hopper (2) is all connected by the top of tremie pipe (7) with feed pot (1), tremie pipe (7) is provided with baiting valve (8), each coal dust lock hopper (2) is all communicated with feed pot (1) by tank body equaler (3), tank body equaler (3) is provided with tank body equilibrium valve (4), lock hopper equaler (5) is connected with between three coal dust lock hoppers (2), the lock hopper equaler (5) of each coal dust lock hopper (2) of access is provided with lock hopper equalizing valve (6), be provided with filling tube (9) in the bottom of feed pot (1), filling tube (9) is provided with reinforced valve (12).
2. pulverized coal conveying device according to claim 1, is characterized in that: on filling tube (9), be provided with T-valve (10), and T-valve (10) is connected with circulation tube (11), and circulation tube (11) is communicated with coal dust lock hopper (2).
3. pulverized coal conveying device according to claim 2, is characterized in that: between the reinforced valve (12) and T-valve (10) of filling tube (9), be provided with pulverized coal flow variable valve (13).
4. pulverized coal conveying device according to claim 2, is characterized in that: the bottom in feed pot (1) is provided with agitator (14).
5. one kind adopts the fine coal carrying method of pulverized coal conveying device as claimed in claim 1, it is characterized in that: after first coal dust lock hopper (2) harvests coal dust, start pressurising, make the boost in pressure of this coal dust lock hopper (2) to identical with the pressure of feed pot (1), open tank body equilibrium valve (4), coal dust lock hopper (2) is made to remain consistent with the pressure of feed pot (2), open baiting valve (8), the coal dust of (2) in coal dust lock hopper is delivered in feed pot (1), after complete under coal dust lock hopper (2) interior coal dust, close baiting valve (8) and tank body equilibrium valve (4), coal dust lock hopper (2) and feed pot (1) are isolated, open the lock hopper equalizing valve (6) of first coal dust lock hopper (2) and second coal dust lock hopper (2) again, first coal dust lock hopper (2) is all pressed to completing second coal dust lock hopper (2) after receiving powder, after two lock hopper pressure are consistent, close lock hopper equalizing valve (6), first coal dust lock hopper (2) starts to carry out pressure release, unload to normal pressure, start again to receive powder, second coal dust lock hopper (2) then opens baiting valve (8) and tank body equilibrium valve (4), start blanking, after second coal dust lock hopper (2) completes blanking, 3rd coal dust lock hopper (2) is repeated by above-mentioned steps, three coal dust lock hoppers (2) perform above-mentioned action in turn, ensure the material level of powder coal charge tank.
6. fine coal carrying method according to claim 5, is characterized in that: feed pot remains stirring in (1), stablizes pulverized coal flow; Coal dust is delivered in vapourizing furnace by the filling tube (9) of feed pot (1) bottom, is delivered in coal dust lock hopper (2) by coal dust before vapourizing furnace feeds intake by switching coal dust T-valve (10) and circulation tube (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410741586.7A CN104479753A (en) | 2014-12-09 | 2014-12-09 | Pulverized coal conveying device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410741586.7A CN104479753A (en) | 2014-12-09 | 2014-12-09 | Pulverized coal conveying device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104479753A true CN104479753A (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410741586.7A Pending CN104479753A (en) | 2014-12-09 | 2014-12-09 | Pulverized coal conveying device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104479753A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105925314A (en) * | 2016-04-22 | 2016-09-07 | 北京航天动力研究所 | Pressurized conveying device and method for powdered coal |
| WO2018192060A1 (en) * | 2017-04-19 | 2018-10-25 | 武汉富瑞能源科技有限公司 | Coal gasification furnace and coal gasification method |
| CN110669551A (en) * | 2019-10-28 | 2020-01-10 | 安徽理工大学 | Coal gasification system and method |
| CN114602287A (en) * | 2020-12-09 | 2022-06-10 | 西安西电高压开关有限责任公司 | Adsorbent replacing device and high-voltage switch equipment |
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| CN105925314A (en) * | 2016-04-22 | 2016-09-07 | 北京航天动力研究所 | Pressurized conveying device and method for powdered coal |
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| CN110669551A (en) * | 2019-10-28 | 2020-01-10 | 安徽理工大学 | Coal gasification system and method |
| CN114602287A (en) * | 2020-12-09 | 2022-06-10 | 西安西电高压开关有限责任公司 | Adsorbent replacing device and high-voltage switch equipment |
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Effective date of registration: 20160323 Address after: 273500 Shandong city of Jining province Fushan Road No. 298 Applicant after: YANKUANG GROUP Co.,Ltd. Address before: Guizhou province Guiyang City Kaiyang County 550306 Yong Wen Xiang Huang Bai wells Applicant before: GUIZHOU KAIYANG CHEMICAL Co.,Ltd. |
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Application publication date: 20150401 |
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