CN207717477U - Coal gas on-line analysis pretreatment system - Google Patents
Coal gas on-line analysis pretreatment system Download PDFInfo
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- CN207717477U CN207717477U CN201820165183.6U CN201820165183U CN207717477U CN 207717477 U CN207717477 U CN 207717477U CN 201820165183 U CN201820165183 U CN 201820165183U CN 207717477 U CN207717477 U CN 207717477U
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- coal gas
- extraction unit
- oil removing
- line analysis
- removing dust
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Abstract
A kind of coal gas on-line analysis pretreatment system, including sampler, level-one oil removing dust-extraction unit, two level oil removing dust-extraction unit, desulfurizer, dehumidification device；Sampler is made of probe tube and the sampling valve being arranged in probe tube tail end；Level-one oil removing dust-extraction unit is by by-pass filtration tank, and the silk screen, filler, the baffle that are arranged in by-pass filtration tank are constituted, and by-pass filtration tank entrance is connect with sampling valve outlet；Two level oil removing dust-extraction unit includes cleaning solution in secondary filtration tank and secondary filtration tank, and secondary filtration tank entrance is connected with the outlet of level-one oil removing dust-extraction unit；Desulfurizer includes the cleaning solution in washing tank and washing tank, and entrance and the outlet of two level oil removing dust-extraction unit of washing tank connect；Dehumidification device includes that the cryogen in cooler and cooler is constituted, and cooler entrance is connected with desulfurizer outlet.It uses multistage filtering, absorption, condensation process to pre-process coal gas, and impurity effect is good in removal coal gas, improves gas quality and purity.
Description
Technical field
The utility model is related to coal underground gasification technology more particularly to coal gas on-line analysis pretreatment systems.
Background technology
Coal underground gasification technology can be by preservation in underground coal coal is converted by heat effect and chemical reaction
Gas or synthesis gas.As the target product in underground gasification production process, gas composition directly reacts underground gasification process progress
Quality, be adjust process for underground gasification parameter important evidence and process monitoring important indicator.Underground coal gasification(UCG) coal
Gas component analysis is primarily directed to the gas major constituent in coal gas --- hydrogen, carbon monoxide, methane, carbon dioxide, nitrogen,
The analysis method of oxygen, gas composition includes off-line analysis and on-line analysis, the former is generally according to certain frequency using artificial
The major defect of sampling and analysing, the analytical instrument generally used such as chromatograph, Aus-gas analyzer, off-line analysis method is that analysis result is deposited
In hysteresis quality, a sample analyzes result and generally requires 25 minutes or so time from being sampled to, thus is difficult to obtain in time
Information under gasification abnormal conditions brings inconvenience to technological operation；On-line analysis can monitor, analyze coal gas group in real time
Point, there is preferable timeliness, thus, for the underground coal gasification(UCG) industrial production system of scale, gas composition exists
Line analysis is preferable gas analysis method, can substantially reduce the artificial workload using analysis, improve analysis result when
Effect property.
On-line analysis is directed to the gas major constituent in coal gas, but underground gasification goes out the coal gas of high temperature of gas drilling hole discharge
Composition is complicated (also referred to as raw gas or raw coke oven gas or wet gas), in addition to containing major gaseous component, generally also contains a large amount of
Water vapour, tar, solid particulate matter (lime-ash, cinder, rock particles object etc.), drop (coal gas water entrainment, oil droplet) etc., and it is few
Impurity, the presence of impurity composition such as amount or micro hydrogen sulfide, hydrogen chloride, hydrogen cyanide, ammonia, phenol are seriously affected to gas composition
Assay, such as pollution with block chromatograph injector, chromatographic column, detector, corrode pipeline, cause the paralysis of chromatographic system
Paralysis, or even damage.Thus in order to ensure the stable operation of on-line analysis system, it is necessary to handle impurity composition.
Existing coal gas on-line analysis pretreatment system type is various, and for the coal gas of underground coal gasification(UCG) pretreatment dress
Set relatively fewer, patent CN2685564 provides a kind of coal gas on-line analysis pretreatment system, using washing tar removing, vulcanization
The impurity such as hydrogen, during actual use the problem is that, since water content is excessively high in coal gas, it is stifled that use in winter easily causes pipeline
Plug；Furthermore tar, dust content are higher in coal gas, and front end sampling pipe is easy to be blocked by tar dirt, this affects on-line analysis
The long-term running stability of system.In addition, washing uses lime aqueous solution while desulfurization, part titanium dioxide can be also removed
Carbon is inaccurate so as to cause gas composition measurement result.
Invention content
The utility model is in order to solve the above-mentioned technical problem, to provide a kind of coal gas on-line analysis pretreatment system, adopt
Coal gas is pre-processed with multistage filtering, absorption, condensation process, remove coal gas in impurity effect it is good, improve gas quality and
Purity.
The technical solution of the utility model is：
A kind of coal gas on-line analysis pretreatment system, including sampler, level-one oil removing dust-extraction unit, two level oil removing dedusting
Device, desulfurizer, dehumidification device；
The sampler is made of probe tube and the sampling valve being arranged in probe tube tail end；
The level-one oil removing dust-extraction unit is by by-pass filtration tank, the silk screen, filler, the baffle structure that are arranged in by-pass filtration tank
At by-pass filtration tank entrance is connect with sampling valve outlet；
The two level oil removing dust-extraction unit includes cleaning solution in secondary filtration tank and secondary filtration tank, secondary filtration tank entrance
It exports and connects with level-one oil removing dust-extraction unit；
The desulfurizer includes the cleaning solution in washing tank and washing tank, and entrance and the two level oil removing dedusting of washing tank fill
Set outlet connection；
The dehumidification device includes that the cryogen in cooler and cooler is constituted, and cooler entrance connects with desulfurizer outlet
It connects.
Further preferably, the coal gas on-line analysis pretreatment system, further includes viscous liquid flow voltage-stabilizing device, viscous liquid flow voltage-stabilizing device enters
Mouth is connected with dehumidification device outlet, for stablizing gas pressure and flow.
Further preferably, the coal gas on-line analysis pretreatment system, further includes drying device, and the drying device, which is located at, to be removed
Between wet device and viscous liquid flow voltage-stabilizing device, for further controlling coal gas humidity.
Further preferably, the coal gas on-line analysis pretreatment system, further includes precise filtering device, the secondary filter dress
The entrance set is connect with viscous liquid flow voltage-stabilizing device gas exit, for further removing microparticle, microlayer model etc. in coal gas.
Further preferably, the coal gas on-line analysis pretreatment system further includes gas flow metering device, the Gas Flow
It measures metering device to be arranged between viscous liquid flow voltage-stabilizing device and precise filtering device, for measuring gas flow.
The beneficial effects of the utility model
The utility model uses sampler, level-one oil removing dust-extraction unit, two level oil removing dust-extraction unit, desulfurizer, removes
Wet device carries out multistage filtering, absorption, condensation pretreatment to coal gas, and impurity effect is good in removal coal gas, improves the matter of coal gas
Amount and purity.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
In figure：1- samplers, 2- level-one oil removing dust-extraction units, 3- two level oil removing dust-extraction units, 4- desulfurizers, 5- are removed
Wet device, 6- viscous liquid flow voltage-stabilizing devices, 7- drying devices, 8- precise filtering devices, 9- gas flows measure device.
Specific implementation mode
As shown, a kind of coal gas on-line analysis pretreatment system, including sampler 1, level-one oil removing dust-extraction unit 2,
Two level oil removing dust-extraction unit 3, desulfurizer 4, dehumidification device 5；
The sampler 1 is made of probe tube and the sampling valve being arranged in probe tube tail end；
The level-one oil removing dust-extraction unit 2 is by by-pass filtration tank, the silk screen, filler, the baffle that are arranged in by-pass filtration tank
It constitutes, by-pass filtration tank entrance is connect with sampling valve outlet；
The two level oil removing dust-extraction unit 3 includes cleaning solution in secondary filtration tank and secondary filtration tank, and secondary filtration tank enters
Mouth is connected with the outlet of level-one oil removing dust-extraction unit 2；
The desulfurizer 4 includes the cleaning solution in washing tank and washing tank, entrance and the two level oil removing dedusting of washing tank
The outlet of device 3 connection；
The dehumidification device 5 includes that the cryogen in cooler and cooler is constituted, and cooler entrance is exported with desulfurizer 4
Connection.
Further preferably, the coal gas on-line analysis pretreatment system further includes viscous liquid flow voltage-stabilizing device 6, viscous liquid flow voltage-stabilizing device 6
Entrance is connected with the outlet of dehumidification device 5, for stablizing gas pressure and flow.
Further preferably, the coal gas on-line analysis pretreatment system, further includes drying device 7, and the drying device 7 is located at
Between dehumidification device 5 and viscous liquid flow voltage-stabilizing device 6, for further controlling coal gas humidity.
Further preferably, the coal gas on-line analysis pretreatment system further includes precise filtering device 8, the secondary filter
The entrance of device 8 is connect with 6 gas exit of viscous liquid flow voltage-stabilizing device, for further removing microparticle, microlayer model etc. in coal gas.
Further preferably, the coal gas on-line analysis pretreatment system further includes gas flow metering device 9, the coal gas
Flow measurement device 9 is arranged between viscous liquid flow voltage-stabilizing device 6 and precise filtering device 8, for measuring gas flow.
The pretreated method of coal gas is carried out using above-mentioned coal gas on-line analysis pretreatment system, the method includes walking as follows
Suddenly：
A) it is drawn from the sampled device 1 of coal gas for going out gas drilling hole or gas piping and is sent into by-pass filtration oil removing dedusting dress
It sets, filters out most tar, dust, drop etc. in coal gas, the gas vent of filtered coal gas inherent filtration tank is drawn；
B) coal gas that inherent filtration tank is drawn enters two level oil removing dust-extraction unit 3, and washing removes remaining tar, powder in coal gas
Dirt, the coal gas after washing are drawn from the gas vent of washing tank；
C) coal gas drawn from washing tank gas enters desulfurizer 4, the sulfide in washing removing coal gas, after washing
Coal gas is drawn from the gas vent of washing tank；
D) coal gas that autospasy sulfur scrubber tank is drawn enters dehumidification device 5, and cooling coal gas condenses to remove simultaneously to be contained in coal gas
Most liquid waters, vaporous water, dewatered coal gas from dehumidifier export draw；
E) the purified coal gas drawn from dehumidifier enters in coal gas in-line analyzer, produces coal through in-line analyzer detection
Gas constituent content.
Further preferably, between in step d) and e), it is additionally provided with drying steps f), so that the coal gas from dehumidifier is entered dry
Dry device 7, remaining steam in adsorbing and removing coal gas.
Further preferably, when go out gas drilling hole gas pressure, flowed fluctuation it is larger when, coal gas is before entering in-line analyzer
Or later, it is sent into the stabilization that viscous liquid flow voltage-stabilizing device 6 keeps supply gas pressure flow.
Further preferably, when viscous liquid flow voltage-stabilizing device 6 is arranged before coal gas in-line analyzer, will sampling pump discharge coal gas it is first
It is sent into precise filtering device 8, through further removing microparticle, microlayer model and then being sent into coal gas in-line analyzer.
Further preferably, coal gas first passes through gas measurement device before entering in-line analyzer, by adjusting blow-down pipe
Excessive coal gas is vented by line gas flow to adjust the gas flow into coal gas in-line analyzer.
The above are only specific embodiments of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of coal gas on-line analysis pretreatment system, it is characterised in that：Including sampler, level-one oil removing dust-extraction unit, two
Grade oil removing dust-extraction unit, desulfurizer, dehumidification device；
The sampler is made of probe tube and the sampling valve being arranged in probe tube tail end；
By by-pass filtration tank, the silk screen, filler, the baffle that are arranged in by-pass filtration tank are constituted the level-one oil removing dust-extraction unit,
By-pass filtration tank entrance is connect with sampling valve outlet；
The two level oil removing dust-extraction unit includes cleaning solution in secondary filtration tank and secondary filtration tank, secondary filtration tank entrance and one
The outlet connection of grade oil removing dust-extraction unit；
The desulfurizer includes the cleaning solution in washing tank and washing tank, and entrance and the two level oil removing dust-extraction unit of washing tank go out
Mouth connection；
The dehumidification device includes that the cryogen in cooler and cooler is constituted, and cooler entrance is connected with desulfurizer outlet.
2. coal gas on-line analysis pretreatment system according to claim 1, it is characterised in that：The coal gas on-line analysis is located in advance
Reason system, further includes viscous liquid flow voltage-stabilizing device, and viscous liquid flow voltage-stabilizing device entrance is connected with dehumidification device outlet.
3. coal gas on-line analysis pretreatment system according to claim 2, it is characterised in that：The coal gas on-line analysis is located in advance
Reason system further includes drying device, and the drying device is between dehumidification device and viscous liquid flow voltage-stabilizing device.
4. coal gas on-line analysis pretreatment system according to claim 2, it is characterised in that：The coal gas on-line analysis is located in advance
Reason system further includes precise filtering device, and the entrance of the precise filtering device is connect with viscous liquid flow voltage-stabilizing device gas exit.
5. coal gas on-line analysis pretreatment system according to claim 4, it is characterised in that：The coal gas on-line analysis is located in advance
Reason system further includes gas flow metering device, and the gas flow metering device setting is in viscous liquid flow voltage-stabilizing device and accurate mistake
Between filter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820165183.6U CN207717477U (en) | 2018-01-31 | 2018-01-31 | Coal gas on-line analysis pretreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820165183.6U CN207717477U (en) | 2018-01-31 | 2018-01-31 | Coal gas on-line analysis pretreatment system |
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| CN207717477U true CN207717477U (en) | 2018-08-10 |
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| CN201820165183.6U Active CN207717477U (en) | 2018-01-31 | 2018-01-31 | Coal gas on-line analysis pretreatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344616A (en) * | 2018-01-31 | 2018-07-31 | 锦州中科制管有限公司 | Coal gas on-line analysis pretreatment system and method |
| CN109323895A (en) * | 2018-10-23 | 2019-02-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Fixed on-line sampling system is always measured containing S for coke-stove gas |
| CN110018038A (en) * | 2019-05-22 | 2019-07-16 | 湖南千盟智能信息技术有限公司 | A kind of coke-stove gas ammonia on-line analysis pretreatment system and its application method |
-
2018
- 2018-01-31 CN CN201820165183.6U patent/CN207717477U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344616A (en) * | 2018-01-31 | 2018-07-31 | 锦州中科制管有限公司 | Coal gas on-line analysis pretreatment system and method |
| CN109323895A (en) * | 2018-10-23 | 2019-02-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Fixed on-line sampling system is always measured containing S for coke-stove gas |
| CN109323895B (en) * | 2018-10-23 | 2021-09-14 | 攀钢集团攀枝花钢铁研究院有限公司 | On-line sampling system for measuring total S content of coke oven gas |
| CN110018038A (en) * | 2019-05-22 | 2019-07-16 | 湖南千盟智能信息技术有限公司 | A kind of coke-stove gas ammonia on-line analysis pretreatment system and its application method |
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