CN208917135U - Raw coke oven gas purification system - Google Patents
Raw coke oven gas purification system Download PDFInfo
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- CN208917135U CN208917135U CN201820173559.8U CN201820173559U CN208917135U CN 208917135 U CN208917135 U CN 208917135U CN 201820173559 U CN201820173559 U CN 201820173559U CN 208917135 U CN208917135 U CN 208917135U
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- coke oven
- raw coke
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- oven gas
- superheated steam
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Abstract
The utility model discloses a kind of raw coke oven gas purification systems, dust removing units, subsequent coal gas processing unit including sequential connection, are connected to superheated steam generating unit by the raw coke oven gas air inlet of the dust removing units.Superheated steam is added into raw coke oven gas by passing through superheated steam generating unit before raw coke oven gas enters dust removing units for the utility model, to reduce the partial pressure of tar ingredients in raw coke oven gas, promote the dew-point temperature of tar ingredients, being reached with this prevents tar to be precipitated, extend the purpose of the subsequent purification system cycle of operation, the superheated steam of addition will not influence raw coke oven gas purification system safety, and contain more water constituent from the raw coke oven gas being discharged in coke oven, therefore superheated steam, which is added, will not influence the chemical property of coal gas, it can effectively be removed in rear process, therefore gas quality will not be had an impact.
Description
Technical field
The utility model relates to technical field of coal chemical industry, in particular to a kind of raw coke oven gas purification system.
Background technique
Raw coke oven gas is that coal decomposes one of the product generated in the case where completely cutting off air conditions through high-temperature heating.It is come out from coke oven
The fuel gas such as hydrogen, methane are mainly contained in coal oven dithio-gas, are suitble to be used as the fuel of high temperature industrial furnace and town gas, be removed
It is also miscellaneous containing some water, carbon monoxide, nitrogen, coal dust, tar, dust, crude benzol, naphthalene, ammonia, hydrogen sulfide etc. except mentioned component
Matter, therefore coal oven dithio-gas cannot be used directly as fuel, must be removed before use above-mentioned influence gas-fired effect with
And the impurity of pollution environment.
Wherein, the characteristic that raw coke oven gas contains tar considerably increases the purification difficulty of raw coke oven gas.Raw coke oven gas is arranged from coke oven
It is easy to be precipitated during entering cleaner out, the dust removal assembly that will cause when entering cleaner in cleaner occurs
Tar pastes the case where film, causes the efficiency of dust collection of cleaner to substantially reduce, occurs raw coke oven gas purification system generally
The shorter problem of service life.
Utility model content
The main purpose of the utility model is to provide a kind of raw coke oven gas purification systems, to solve raw coke oven gas in the prior art
The short problem of purification system service life.
To achieve the goals above, the utility model provides a kind of raw coke oven gas purification system, removing including sequential connection
Dirt unit, subsequent coal gas processing unit are connected to superheated steam generating unit by the raw coke oven gas air inlet of the dust removing units.This reality
Superheated steam is added into raw coke oven gas by passing through superheated steam generating unit before raw coke oven gas enters dust removing units with novel,
To reduce the partial pressure of tar ingredients in raw coke oven gas, the dew-point temperature of tar ingredients is promoted, being reached with this prevents tar to be precipitated,
Extending the purpose of the subsequent purification system cycle of operation, the superheated steam of addition will not influence raw coke oven gas purification system safety, and
And contain more water constituent from the raw coke oven gas being discharged in coke oven, therefore addition superheated steam will not influence the chemistry of coal gas
Property can be removed effectively in rear process, therefore will not be had an impact to gas quality.
The raw coke oven gas that coal coking furnace generates is mixed before entering dry method dust with high-temperature vapor, to raw coke oven gas into
Row is modified, and makes the tar equal proportion being wherein easily precipitated reduction, to promote raw coke oven gas dew-point temperature, is reduced and even is avoided carrying out
Paste film situation is precipitated in the tar occurred during dry cleaning, thus extends the dry-dedusting system cycle of operation.
Further, the superheated steam generating unit include superheated steam feedway and be set to superheated steam confession
Steam control valve and flow of superheated steam meter to device steam outlet, the raw coke oven gas gas outlet are equipped with gas regulator
And gas flow meter.
Further, the steam control valve, flow of superheated steam meter, gas regulator and gas flow meter with control
System processed is connected.
Further, the control system is PLC or DCS.
Further, the dust removing units include gas filter system, and the filter assemblies of the gas filter system are to burn
Tie the filter assemblies that inorganic porous material is constituted.Using sintering inorganic porous material as filtering material, it is sintered inorganic porous material
Material includes sintering diamond bit or sintered porous ceramic material, so that filtration system is resistant to high temperature, by it as filter material
Material advantage is high temperature resistant and filtering accuracy is high, in order to which tar will not be precipitated when guaranteeing filtering.
Further, the filter assemblies of the gas filter system are the mistake that FeAl intermetallic compound porous material is constituted
Filter component.FeAl intermetallic compound porous material is cheap, can be resistant to high-temperature oxydation, and corrosion resistance is strong.
Further, the subsequent coal gas processing unit includes coke tar recovery system, de- naphthalene processing unit, desulfurization process dress
Set, wash ammonia treatment device and wash benzene processing unit.It is handled by a series of subsequent gas purifications, so that the tar in coal gas obtains
Recycling, the impurity such as the remaining naphthalene of coal gas, sulphur, ammonia, benzene are removed, the coal gas finally obtained can be passed directly in gas chamber or
Person uses for citizen, and desulfurization process can obtain the sulphur of high-quality in the art, and high-quality can be obtained by washing ammonia treatment
Ammonium sulfate.
Further, the coke tar recovery system includes the primary cooler being linked in sequence, electrical tar precipitator.In the cooling procedure
In, the tar in coal gas is fully cooled precipitation, and the tar purity being finally collected into is very high.Electrical tar precipitator is made using electric field action
The tar not being collected into primary cooler is obtained to settle down.
Further, the superheated steam generating unit is the mistake for the superheated steam that output temperature range is 300-600 DEG C
Hot steam generating unit.
As it can be seen that the utility model will not have an impact the use of subsequent technique and coal gas, vapor is easy to get, cost compared with
It is low, and raw coke oven gas purification system safety can be promoted, it is larger with respect to thermal capacitance using superheated steam, during dry cleaning, temperature
Degree reduces the temperature drop during advantageously reducing dry cleaning slowly, to reduce the risk of the precipitations such as tar.The utility model
The service life of raw coke oven gas purification system can significantly be extended.
The utility model is described further with reference to the accompanying drawings and detailed description.The utility model is additional
Aspect and advantage will be set forth in part in the description, and partially will become apparent from the description below, or through the invention
Practice recognize.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to assist the understanding of the present invention, content provided in attached drawing
And its related explanation can be used for explaining the utility model in the present invention, but not constitute the improper limit to the utility model
It is fixed.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model raw coke oven gas purification system.
Related label in above-mentioned attached drawing are as follows:
1: superheated steam feedway；
110: steam control valve；
120: steam suppling tube road；
130: flow of superheated steam meter；
2: gas filter system；
210: raw coke oven gas air inlet pipe；
220: gas regulator；
230: gas flow meter；
3: coke tar recovery system；
4: de- naphthalene processing unit；
5: desulfurization process device；
6: washing ammonia treatment device；
7: washing benzene processing unit；
8: control system.
Specific embodiment
Clear, complete explanation is carried out to the utility model with reference to the accompanying drawing.Those of ordinary skill in the art are being based on
The utility model will be realized in the case where these explanations.Before being illustrated in conjunction with attached drawing to the utility model, spy is needed
It is not pointed out that:
The technical solution provided in each section including following the description and technical characteristic in the utility model,
In the case where not conflicting, these technical solutions and technical characteristic be can be combined with each other.
In addition, the embodiments of the present invention being related in following the description are generally only the reality of one branch of the utility model
Example is applied, instead of all the embodiments.Therefore, based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, the model of the utility model protection all should belong to
It encloses.
About term in the utility model and unit.In description and claims of this specification and related part
Term " includes ", " having " and their any deformation, it is intended that cover and non-exclusive include.Term " superheated steam " is
(wet be saturated to dry saturation temperature remain unchanged) for referring to that the process temperature for being saturated to the dry saturation of wet saturation is increased without, does saturation
After continue heating then temperature can rise, become superheated vapor.Term " KV value " refers to discharge coefficient, unit " m3/ h " indicates steam
Flow hourly.
Raw coke oven gas purification system, dust removing units, subsequent coal gas processing unit including sequential connection, the dust removing units
Superheated steam generating unit is connected to by raw coke oven gas air inlet.
The superheated steam generating unit includes superheated steam feedway 1 and is set to superheated steam feedway 1
The steam control valve 110 and flow of superheated steam meter 130 of steam outlet, the raw coke oven gas gas outlet are equipped with gas regulator
220 and gas flow meter 230.
The steam control valve 110, flow of superheated steam meter 130, gas regulator 22) and gas flow meter 230 is
It is connected with control system 8.
The control system 8 is PLC or DCS.
The dust removing units include gas filter system 2, and the filter assemblies of the gas filter system 2 are that sintering is inorganic more
The filter assemblies that Porous materials are constituted.
The filter assemblies of the gas filter system 2 are the filter assemblies that FeAl intermetallic compound porous material is constituted.
The subsequent coal gas processing unit includes coke tar recovery system 3, de- naphthalene processing unit 4, and desulfurization process device 5 is washed
Ammonia treatment device 6 and wash benzene processing unit 7.
The coke tar recovery system 3 includes the primary cooler being linked in sequence, electrical tar precipitator.
The superheated steam generating unit is the superheated steam generating unit that output temperature range is 300-600 DEG C.
Raw coke oven gas purification system in the present invention includes sequentially connected gas filter system 2, coke tar recovery system 3, takes off
Naphthalene processing unit 4, desulfurization process device 5 wash ammonia treatment device 6 and wash benzene processing unit 7, in the waste coal of gas filter system 2
Other in gas air inlet pipe 210 to be connected to steam suppling tube road 120, the inlet port in the steam suppling tube road 120 is connected with superheated steam
Feedway 1 is additionally provided with steam control valve 110 and flow of superheated steam meter 130 on steam suppling tube road 120, coke oven
Raw coke oven gas gas outlet is equipped with gas regulator 220 and gas flow meter 230.The steam control valve 110, superheat steam flow
Meter 130, gas regulator 220 and gas flow meter 230 are connected with control system 8.Washing 7 tail end of benzene processing unit also
Vapor device can be added and thus remove vapor in raw coke oven gas.
Preferably, the steam control valve 110 is connected to control system, which is PLC or DCS.The dedusting
Unit includes gas filter system 2, and the filter assemblies of the gas filter system 2 are the filtering for being sintered inorganic porous material and constituting
Component, the filter assemblies of the gas filter system 2 are the filter assemblies that FeAl intermetallic compound porous material is constituted.It is described
Coke tar recovery system 3 includes the primary cooler being linked in sequence, electrical tar precipitator.The superheated steam generating unit is output temperature model
Enclose the superheated steam generating unit for 300-600 DEG C.
The step of using above-mentioned raw coke oven gas purification system purification process are as follows:
One, the raw coke oven gas being discharged from coke oven enters raw coke oven gas air inlet pipe 210, opens superheated steam feedway 1,
Raw coke oven gas output feedback to control system 8 is being controlled using the raw coke oven gas output quantity of gas flow meter measurement coke oven output
The superheated steam volume fraction being previously set after mixing in system 8 processed is 20-40%, and control system is according to the raw coke oven gas of acquisition
Output quantity and the superheated steam volume fraction being previously set control to adjust superheated steam supply amount, adjust steam control valve 110
Thus achieve the purpose that adjust superheat steam flow, superheated steam volume fraction is 20-40% after being achieved in holding mixing.
Superheated steam enters raw coke oven gas air inlet pipe 210 via steam suppling tube road 120 and mixes with raw coke oven gas, thus reduces in raw coke oven gas
The partial pressure of tar avoids the precipitation of tar；
Two, the above-mentioned raw coke oven gas for being mixed into superheated steam is passed into gas filter system 2 later, the gas filter system
Filtering material in 2 is the intermetallic compound porous inorganic material of FeAl, and dust contains in the purified coal gas of gas filter system 2
Measure < 10mg/Nm3；
Three, raw coke oven gas is passed into coke tar recovery system 3 later, the tar in coke tar recovery system 3 is in primary cooler 310
Middle precipitation, under the pressurization of external air blower, most of tar is precipitated in liquid form, and small part tar enters electric tar
It is settled in oily device and under the electric field action of electrical tar precipitator, the de- processing of naphthalene processing unit 4 of the coal gas process after recycling tar,
(H indicates that hydroquinone, P PDS, F are ferrous sulfate, and it is compound with HPF that HPF method, which is using ammonia as alkali source, for HPF method desulfurization workshop section
The wet oxidation desulfurization of type catalyst) desulfurization process device 5 handle, ammonium sulfate workshop section wash the processing of ammonia treatment device 6, eventually
The recycling of the workshop sections such as cold wash benzene workshop section and crude benzol distillation washed benzene processing unit 7 and carry out benzene, will finally obtain purified gas and be delivered to
Gas chamber storage and utilization.
Resulting coal gas is purified using above-mentioned raw coke oven gas purification system and meets GB/T13612-2006 artificial coal gas country mark
It is quasi-.
The utility model has the advantage of 1, the superheated steam as modifying agent that uses of the utility model is raw coke oven gas gas
One of body ingredient will not have an impact the use of subsequent technique and coal gas.2, the modifying agent that the utility model uses for
Vapor, is easy to get, cost is relatively low, and can promote raw coke oven gas purification system safety.3, the modifying agent that the utility model uses
In fact larger with respect to thermal capacitance for vapor, during the dry cleaning of gas filter system, temperature is reduced slowly, is conducive to subtract
Temperature drop during few dry cleaning, to reduce the risk of the precipitations such as tar.
The related content of the utility model is illustrated above.Those of ordinary skill in the art are being based on these explanations
In the case where will realize the utility model.Above content based on the utility model, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, the model of the utility model protection all should belong to
It encloses.
Claims (8)
1. raw coke oven gas purification system, dust removing units, subsequent coal gas processing unit including sequential connection, which is characterized in that described
Superheated steam generating unit is connected to by the raw coke oven gas air inlet of dust removing units, the superheated steam generating unit includes superheated steam
Feedway (1) and steam control valve (110) and the overheat steaming for being set to superheated steam feedway (1) steam outlet
The raw coke oven gas gas outlet of steam flow meter (130), coke oven is equipped with gas regulator (220) and gas flow meter (230).
2. raw coke oven gas purification system as described in claim 1, which is characterized in that the steam control valve (110), superheated steam
Flowmeter (130), gas regulator (220) and gas flow meter (230) are connected with control system (8).
3. raw coke oven gas purification system as claimed in claim 2, which is characterized in that the control system (8) is PLC or DCS.
4. raw coke oven gas purification system as described in claim 1, which is characterized in that the dust removing units include gas filter system
(2), the filter assemblies of the gas filter system (2) are the filter assemblies for being sintered inorganic porous material and constituting.
5. raw coke oven gas purification system as claimed in claim 4, which is characterized in that the filtering group of the gas filter system (2)
Part is the filter assemblies that FeAl intermetallic compound porous material is constituted.
6. raw coke oven gas purification system as described in claim 1, which is characterized in that the subsequent coal gas processing unit includes tar
Recovery system (3), de- naphthalene processing unit (4), desulfurization process device (5) are washed ammonia treatment device (6) and are washed benzene processing unit (7).
7. raw coke oven gas purification system as claimed in claim 6, which is characterized in that the coke tar recovery system (3) includes sequence
Primary cooler, the electrical tar precipitator of connection.
8. raw coke oven gas purification system as described in claim 1, which is characterized in that the superheated steam generating unit is output temperature
Spend the superheated steam generating unit that range is 300-600 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820173559.8U CN208917135U (en) | 2018-01-31 | 2018-01-31 | Raw coke oven gas purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820173559.8U CN208917135U (en) | 2018-01-31 | 2018-01-31 | Raw coke oven gas purification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208917135U true CN208917135U (en) | 2019-05-31 |
Family
ID=66691555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820173559.8U Active CN208917135U (en) | 2018-01-31 | 2018-01-31 | Raw coke oven gas purification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208917135U (en) |
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2018
- 2018-01-31 CN CN201820173559.8U patent/CN208917135U/en active Active
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