CN207452036U - Broken coal gasification is using device of the partial CO 2 as gasifying agent - Google Patents
Broken coal gasification is using device of the partial CO 2 as gasifying agent Download PDFInfo
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- CN207452036U CN207452036U CN201721424875.XU CN201721424875U CN207452036U CN 207452036 U CN207452036 U CN 207452036U CN 201721424875 U CN201721424875 U CN 201721424875U CN 207452036 U CN207452036 U CN 207452036U
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- pressure
- gasifying agent
- carbon dioxide
- regulating valve
- mixing arrangement
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Abstract
The utility model discloses a kind of gasification of broken coal using device of the partial CO 2 as gasifying agent, top of gasification furnace sets coal to lock, bottom sets ash lock, gasification furnace grate distributor chamber connects gasifying agent mixing arrangement, gasifying agent mixing arrangement steam inlet connects steam pipe line, oxygen intake connects oxygen pipeline, carbon dioxide entrance connects carbon dioxide pipeline, pressure-regulating valve one is set on carbon dioxide pipeline, switch valve one, surge tank, pressure-regulating valve two, pressure controller one and switch valve two, pressure controller two is set at the top of surge tank, pressure-regulating valve three in parallel between two air inlet of pressure-regulating valve and gas outlet.The carbon dioxide gas that the utility model can be vented downstream unit recycles, part vapor is substituted by carbon dioxide and not only adjusts gas composition, also reduce vapor consumption, the device capability of coal gas water treatment unit and phenol ammonia recovery unit in downstream process is reduced, reduces organic wastewater discharge.
Description
Technical field
The utility model is related to crushed coal pressure gasifying field, more specifically, being to be related to a kind of broken coal gasification using part
Device of the carbon dioxide as gasifying agent.
Background technology
Gasifying agent is generally oxygen+vapor in crushed coal pressure gasifying technology, and steam oxygen ratio is generally in 5~8Kg/NM3.Due to
Low (the gasification temperature of fixed bed gasification reaction temperature<1100 DEG C), the resolution ratio of vapor is relatively low in gasifying agent, generally in 30%-
40%, most of undecomposed steam is cooled into the waste water containing organic matter in downstream with raw gas.Coal gas waste has COD
High, the characteristics of oil content is high, colourity is high and intractability is big, corresponding water-oil separating and phenol ammonia recovery unit not only invest it is high,
It takes up a large area, and fluctuation of service.
Since carbon dioxide and thermodynamics, the dynamics of carbon reaction, vapor and carbon reaction are essentially identical, two anti-
Should all be strong endothermic reaction, the equilibrium constant of two reactions is close at high temperature, and some vapor is substituted as gas using carbon dioxide
Agent has feasibility in technique, and with operability.
Utility model content
The purpose of this utility model is to overcome deficiencies of the prior art, provide a kind of broken coal gasification using part two
Device of the carbonoxide as gasifying agent, meet fixed bed broken coal gasification require while, can to downstream unit be vented two
Carbonoxide gas is recycled, and is reached the resource minimizing of carbon dioxide and recycling purpose, while is replaced by carbon dioxide
Gas composition can be not only adjusted for part vapor, but also reduces vapor consumption, reduces coal gas water process in downstream process
The device capability of unit and phenol ammonia recovery unit reduces organic wastewater discharge.
The purpose of this utility model is achieved through the following technical solutions.
The broken coal gasification of the utility model is described including gasification furnace using device of the partial CO 2 as gasifying agent
Top of gasification furnace is provided with coal lock, and bottom is provided with grey lock, and the gasification furnace grate distributor chamber is connected with gasifying agent mixing arrangement,
The steam inlet of the gasifying agent mixing arrangement is connected with steam pipe line, and the oxygen intake of the gasifying agent mixing arrangement is connected with
Oxygen pipeline, the carbon dioxide entrance of the gasifying agent mixing arrangement are connected with carbon dioxide pipeline, the carbon dioxide pipeline
On along gas conveying direction be disposed with pressure-regulating valve one, switch valve one, surge tank, pressure-regulating valve two, pressure control
Device one and switch valve two, the surge tank top is provided with the pressure controller two with one interlocked control of pressure-regulating valve, described
Pressure-regulating valve three is parallel between the air inlet of pressure-regulating valve two and gas outlet, the pressure-regulating valve two and pressure are adjusted
Valve three with one Staged cotrol of pressure controller.
The gasifying agent mixing arrangement is made of mixing tube, nozzle and mixed cell.
Compared with prior art, advantageous effect caused by the technical solution of the utility model is：
(1) in the utility model, gasification furnace grate distributor chamber is connected with gasifying agent mixing arrangement, using mixing tube, nozzle
It is formed with mixed cell, steam and carbon dioxide entrance are increased premixing effect, made steam, carbon dioxide using aperture mode
It is uniformly mixed in oxygen scattered；
(2) the utility model utilizes the de- system emptying of downstream unit acid on the basis of original gasification furnace flow is retained
Carbon dioxide passes through the pressure of surge tank and Staged cotrol regulation of carbon dioxide pipeline, high pressure titanium dioxide after compressor boosts
After carbon gas is mixed by gasifying agent mixer with oxygen, steam, part vapor is substituted, mixed gasifying agent enters gasification furnace
Grate distributor chamber, into gasification furnace in participate in gasification reaction；
(3) carbon dioxide gas that the utility model can be vented downstream unit recycles, and reaches carbon dioxide
Resource minimizing and recycling purpose, while part vapor is substituted by carbon dioxide can not only adjust gas composition,
And vapor consumption is reduced, the device capability of coal gas water treatment unit and phenol ammonia recovery unit in downstream process is reduced, is reduced
Organic wastewater discharges.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Reference numeral:1 gasification furnace；2 coals are locked；3 ash locks；4 gasifying agent mixing arrangements；5 steam pipe lines；6 oxygen pipelines；7 two
Carbonoxide pipeline；8 pressure-regulating valves one；9 pressure-regulating valves two；10 pressure-regulating valves three；11 switch valves one；12 switch valves two；
13 pressure controllers one；14 pressure controllers two；15 surge tanks.
Specific embodiment
The utility model will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of broken coal gasification of the utility model is using device of the partial CO 2 as gasifying agent, bag
Gasification furnace 1 is included, 1 top of gasification furnace is provided with coal lock 2, and bottom is provided with ash lock 3, and the gasification furnace 1 is pressurizeed using broken coal
Counter current contacting continuous gasification dry ash extraction technique.The 1 grate distributor chamber of gasification furnace is connected with gasifying agent mixing arrangement 4, described
Gasifying agent mixing arrangement 4 is exported to be connected with 1 inside of gasification furnace.The gasifying agent mixing arrangement 4 is single by mixing tube, nozzle and mixing
Member composition, steam inlet and carbon dioxide entrance using aperture mode, increase premixing effect, steam, carbon dioxide are made to exist
It is uniformly mixed and disperses in oxygen, mixed steam, carbon dioxide and oxygen participate in gas as gasifying agent into gasification furnace 1 is interior
Change reaction.
The steam inlet of the gasifying agent mixing arrangement 4 is connected with steam pipe line 5, and the steam pipe line 5 can set two,
One is used for the conveying into gasifying agent mixing arrangement 4 and hot steam is pressed through in battery limit (BL), and another is used to mix to gasifying agent
The middle pressure self-produced steam from gas bag is conveyed in device 4.The oxygen intake of the gasifying agent mixing arrangement 4 is connected with oxygen pipeline
6, for conveying the oxygen from battery limit (BL) into gasifying agent mixing arrangement 4.
The carbon dioxide entrance of the gasifying agent mixing arrangement 4 is connected with carbon dioxide pipeline 7, the carbon dioxide pipeline
7 are connected to the high-pressure carbon dioxide gas manifold of downstream unit, are set gradually on the carbon dioxide pipeline 7 along gas conveying direction
There are pressure-regulating valve 1, switch valve 1, surge tank 15, pressure-regulating valve 29, pressure controller 1 and switch valve 2 12.
The surge tank 15 is used for the high-pressure carbon dioxide after compressor pressure-raising into row buffering, and 15 top of surge tank is set
There is pressure controller 2 14, the pressure controller 2 14 is for monitoring and controlling buffer tank pressure, with pressure-regulating valve 1
Lock control.Pressure-regulating valve 3 10 is parallel between the air inlet of the pressure-regulating valve 29 and gas outlet, the pressure is adjusted
Valve 29 and pressure-regulating valve 3 10 with one 13 Staged cotrol of pressure controller.
Coal is periodically added in by coal lock 2 in gasification furnaces 1, in press through hot steam/middle pressure self-produced steam, oxygen and carbon dioxide
Gas, as gasifying agent, enters gasification furnace after the mixing of gasifying agent mixing arrangement 4 by the qi-emitting hole for being distributed in revolving grate surface
1, gasifying agent with from coal lock 2 coal counter current contacting, generate raw gas.Coal and the ash generated after gasifying agent reaction, by fire grate
Rotation be continually drained ash lock 3, by ash lock 3 pressure releases after periodically purge out.
Broken coal gasification based on above device, can be to downstream using treatment process of the partial CO 2 as gasifying agent
The carbon dioxide gas of device emptying is recycled, and is reached the resource minimizing of carbon dioxide and recycling purpose, is led to simultaneously
Gas composition can not only be adjusted by crossing carbon dioxide replacement part vapor, but also reduce vapor consumption, reduce downstream process
The device capability of middle coal gas water treatment unit and phenol ammonia recovery unit reduces organic wastewater discharge.Specifically include following steps：
Step 1, gasification furnace 1 normally drive to run, and steam pipe line 5 and oxygen pipeline 6 are respectively to gasifying agent mixing arrangement 4
Middle conveying steam and oxygen, after mixing as gasifying agent, gasifying agent, which enters, participates in gasification reaction in gasification furnace 1；
Step 2 in downstream unit after carbon-dioxide gas compressor normal operation, opens switch valve 1, according to surge tank
The aperture of 15 internal pressure interlocked control pressure-regulating valve 1, the high-pressure carbon dioxide after compressor pressure-raising is drawn through entrance
Into surge tank 15；
Step 3, the buffered outlet of tank 15 of high-pressure carbon dioxide continues to convey to 4 direction of gasifying agent mixing arrangement, by dividing
Process control adjusts the aperture of pressure-regulating valve 29 and pressure-regulating valve 3 10 so that 7 pressure ratio oxygen pipeline of carbon dioxide pipeline
High 0.7~the 0.8MPa of 6 pressure；
Step 4, open switch valve 2 12, high-pressure carbon dioxide is introduced into gasifying agent mixing arrangement 4, make carbon dioxide,
Steam and oxygen are uniformly mixed in gasifying agent mixing arrangement 4 as gasifying agent, and gasifying agent, which enters, participates in gasified reverse in gasification furnace 1
It should；
Step 5 after vehicle is jumped in the 7 pressure oscillation increasing of carbon dioxide pipeline or compressor, turns off the switch valve 2 12 immediately,
High-pressure carbon dioxide is cut out, keeps gasification furnace 1 stable.
Although the function and the course of work of the utility model are described above in conjunction with attached drawing, the utility model is simultaneously
Above-mentioned concrete function and the course of work are not limited to, above-mentioned specific embodiment is only schematical rather than limits
Property, those of ordinary skill in the art, will not departing from the utility model aims and right under the enlightenment of the utility model
It asks under protected ambit, many forms can also be made, these are belonged within the protection of the utility model.
Claims (2)
1. a kind of broken coal gasification is using device of the partial CO 2 as gasifying agent, including gasification furnace (1), the gasification furnace
(1) top is provided with coal lock (2), and bottom is provided with ash lock (3), which is characterized in that gasification furnace (1) the grate distributor chamber connection
There is gasifying agent mixing arrangement (4), the steam inlet of the gasifying agent mixing arrangement (4) is connected with steam pipe line (5), the gasification
The oxygen intake of agent mixing arrangement (4) is connected with oxygen pipeline (6), the carbon dioxide entrance of the gasifying agent mixing arrangement (4)
It is connected with carbon dioxide pipeline (7), pressure-regulating valve is disposed with along gas conveying direction on the carbon dioxide pipeline (7)
One (8), switch valve one (11), surge tank (15), pressure-regulating valve two (9), pressure controller one (13) and switch valve two (12),
The pressure controller two (14) with pressure-regulating valve one (8) interlocked control, the pressure are provided at the top of the surge tank (15)
Pressure-regulating valve three (10), the pressure-regulating valve two (9) and pressure are parallel between the air inlet of regulating valve two (9) and gas outlet
Force regulating valve three (10) with pressure controller one (13) Staged cotrol.
2. broken coal gasification according to claim 1 is using device of the partial CO 2 as gasifying agent, which is characterized in that
The gasifying agent mixing arrangement (4) is made of mixing tube, nozzle and mixed cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721424875.XU CN207452036U (en) | 2017-10-31 | 2017-10-31 | Broken coal gasification is using device of the partial CO 2 as gasifying agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721424875.XU CN207452036U (en) | 2017-10-31 | 2017-10-31 | Broken coal gasification is using device of the partial CO 2 as gasifying agent |
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| Publication Number | Publication Date |
|---|---|
| CN207452036U true CN207452036U (en) | 2018-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107674709A (en) * | 2017-10-31 | 2018-02-09 | 天津渤化永利化工股份有限公司 | Broken coal gasification uses device and handling process of the partial CO 2 as gasifying agent |
-
2017
- 2017-10-31 CN CN201721424875.XU patent/CN207452036U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107674709A (en) * | 2017-10-31 | 2018-02-09 | 天津渤化永利化工股份有限公司 | Broken coal gasification uses device and handling process of the partial CO 2 as gasifying agent |
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