CN205965419U - Landfill gas device that deoxidizes - Google Patents
Landfill gas device that deoxidizes Download PDFInfo
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- CN205965419U CN205965419U CN201620954151.5U CN201620954151U CN205965419U CN 205965419 U CN205965419 U CN 205965419U CN 201620954151 U CN201620954151 U CN 201620954151U CN 205965419 U CN205965419 U CN 205965419U
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- gas
- control valve
- absorbing unit
- pressure
- pipeline
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model provides a landfill gas device that deoxidizes, including feed gas buffer tank, pressure swing adsorption system, product gas buffer tank, tail gas buffer and roots's fan, the regulation pipeline is still drawn to product gas outward transportation pipeline, the other end of adjusting the pipeline with the air inlet of tail gas buffer communicates with each other adjust the pipeline and install adjusting valve, the exhaust end of tail gas buffer is connected to boiler oil gas system behind roots's fan. The advantage does: the utility model provides a landfill gas device that deoxidizes can make in the landfill gas oxygen content fall for below 0.5%, and the methane rate of recovery be 70~90%, adjusts the content of methane in the tail gas, and the operation requirement that makes tail gas satisfy the boiler makes landfill gas utilization ratio reach 100%, reaches the purpose of landfill gas comprehensive utilization. In addition, can control the adsorption tower quantity that drops into in a flexible way according to actual technology demand, have and use nimble convenient advantage.
Description
Technical field
This utility model belongs to rubbish landfill gas processing technology field and in particular to a kind of rubbish landfill gas device for deoxidizing.
Background technology
Rubbish landfill gas are the gas of the Organic substance anaerobic degradation generation of landfill yard, are biological methane after purification.
As a kind of bio-fuel, there are cleaning, efficient, safe and renewable four big features, efficiently preparation and comprehensive utilization are pole for it
Representative two-way cleaning process.
The main component of rubbish landfill gas is CH4(40%～75%), CO2(15%～60%), N2(5%～20%), O2
(0%～3%), and NH3, CO, organic sulfur, halogenated hydrocarbons etc..Landfill gas are compressed producing CNG, need to be by the oxygen in landfill gas
QI prostration is to less than 0.5%.
At present, landfill gas deoxidization technique mainly have following several：1st, the original gas in source of the gas and oxygen reaction are utilized；2nd, lead to
Enter hydrogen and react production water with oxygen；3rd, there is oxidation reaction in the oxygen in gaseous mixture and catalyst, so that catalyst activity component is changed
For high oxide；4th, membrane separation process；5th, pressure swing adsorption method.Method 1 reaction temperature is high, need to heat and cooling device, and equipment is thrown
Money is big, high energy consumption；Method 2 needs hydrogen source, and will determine addition amounts of hydrogen；Method 3 is relatively inaccessible to qualified deoxidation depth；Method 4
Relatively costly；So pressure-variable adsorption becomes the ideal chose of landfill gas deoxidation.
However, existing pressure swing adsorption method processes rubbish landfill gas, mainly have that deoxidation effectiveness is low, inconvenient operation, use
Dumb the problems such as.
Utility model content
The defect existing for prior art, this utility model provides a kind of rubbish landfill gas device for deoxidizing, can effectively solve
Certainly the problems referred to above.
The technical solution adopted in the utility model is as follows：
This utility model provides a kind of rubbish landfill gas device for deoxidizing, including unstripped gas surge tank, pressure swing adsorption system, product
Product gas surge tank, tail gas buffer and roots blower；Wherein, described pressure swing adsorption system includes n absorbing unit in parallel；Often
Individual described absorbing unit is the absorbing unit of composition after single adsorption tower or m adsorption tower parallel connection；Wherein, m and n is nature
Number；M is less than n；
For n absorbing unit, each described absorbing unit be provided with air inlet, scheduling product QI KOU, emptying regeneration mouth,
On all press mouth and lower all press mouth；The air inlet of described absorbing unit is connected to described unstripped gas buffering by the 1st gas pipeline
The air vent of tank；In described 1st gas pipeline, air intake control valve door is installed；The scheduling product QI KOU of described absorbing unit passes through row
Product feed channel is connected to the air inlet of described product gas surge tank；In described scheduling product feed channel, scheduling product gas control system is installed
Valve；The emptying of described absorbing unit regenerates the air inlet that mouth is connected to described tail gas buffer by emptying regeneration conveyance conduit
Mouthful；In described emptying regeneration conveyance conduit, emptying Regeneration control valve is installed；Described absorbing unit upper all pressure mouth and next
Connected by upper pressure-equalizing passageway between upper all pressures mouth of individual adjacent absorbing unit；Described upper pressure-equalizing passageway is provided with all voltage-controlled
Valve processed；By lower balance pipe between lower all pressures mouth of described absorbing unit and lower all pressures mouth of next adjacent absorbing unit
Road connects；Described lower pressure-equalizing passageway is provided with lower Pressure and Control valve；
The air vent of described product gas surge tank is connected with the outside conveyance conduit of product gas；And, described product gas are outside
Conveyance conduit also draws regulation pipeline；The described other end adjusting pipeline is communicated with the air inlet of described tail gas buffer, in institute
State regulation pipeline and control valve is installed；The exhaust end of described tail gas buffer is connected to boiler oil gas after roots blower
System.
Preferably, also include master controller；Described master controller respectively with described air intake control valve door, described row's product gas
Control valve, described emptying Regeneration control valve, described upper Pressure and Control valve, described lower Pressure and Control valve and described tune
Section valve connects.
The rubbish landfill gas device for deoxidizing that this utility model provides has advantages below：
The rubbish landfill gas device for deoxidizing that this utility model provides, can make oxygen content in landfill gas be reduced to less than 0.5%, first
The alkane response rate is 70～90%, adjusts the content of methane in tail gas, makes tail gas meet the use requirement of boiler, make utilization of LFG
Rate reaches 100%, reaches the purpose of landfill gas comprehensive utilization.Additionally, the suction putting into flexibly can be controlled according to actual process demand
Attached tower quantity, has the advantages that flexible and convenient to use.
Brief description
The structural representation of the rubbish landfill gas device for deoxidizing that Fig. 1 provides for this utility model.
Specific embodiment
In order that technical problem, technical scheme and beneficial effect that this utility model is solved become more apparent, below
In conjunction with drawings and Examples, this utility model is further elaborated.It should be appreciated that described herein be embodied as
Example only in order to explain this utility model, is not used to limit this utility model.
This utility model provides a kind of rubbish landfill gas device for deoxidizing, including unstripped gas surge tank, pressure swing adsorption system, product
Product gas surge tank, tail gas buffer and roots blower；Wherein, described pressure swing adsorption system includes n absorbing unit in parallel；Often
Individual described absorbing unit is the absorbing unit of composition after single adsorption tower or m adsorption tower parallel connection；Wherein, m and n is nature
Number；M is less than n；
For n absorbing unit, each described absorbing unit be provided with air inlet, scheduling product QI KOU, emptying regeneration mouth,
On all press mouth and lower all press mouth；The air inlet of described absorbing unit is connected to described unstripped gas buffering by the 1st gas pipeline
The air vent of tank；In described 1st gas pipeline, air intake control valve door is installed；The scheduling product QI KOU of described absorbing unit passes through row
Product feed channel is connected to the air inlet of described product gas surge tank；In described scheduling product feed channel, scheduling product gas control system is installed
Valve；The emptying of described absorbing unit regenerates the air inlet that mouth is connected to described tail gas buffer by emptying regeneration conveyance conduit
Mouthful；In described emptying regeneration conveyance conduit, emptying Regeneration control valve is installed；Described absorbing unit upper all pressure mouth and next
Connected by upper pressure-equalizing passageway between upper all pressures mouth of individual adjacent absorbing unit；Described upper pressure-equalizing passageway is provided with all voltage-controlled
Valve processed；By lower balance pipe between lower all pressures mouth of described absorbing unit and lower all pressures mouth of next adjacent absorbing unit
Road connects；Described lower pressure-equalizing passageway is provided with lower Pressure and Control valve；
The air vent of described product gas surge tank is connected with the outside conveyance conduit of product gas；And, described product gas are outside
Conveyance conduit also draws regulation pipeline；The described other end adjusting pipeline is communicated with the air inlet of described tail gas buffer, in institute
State regulation pipeline and control valve is installed；The exhaust end of described tail gas buffer is connected to boiler oil gas after roots blower
System.
Also include master controller；Described master controller respectively with described air intake control valve door, described scheduling product gas control valve
Door, described emptying Regeneration control valve, described upper Pressure and Control valve, described lower Pressure and Control valve and described control valve
Connect.
In this utility model, pressure swing adsorption system includes n absorbing unit in parallel, and, each absorbing unit is single
The absorbing unit of composition after individual adsorption tower or the parallel connection of several adsorption towers.In fig. 1,2 absorption lists in parallel are included altogether
Unit, each absorbing unit is single adsorption tower, that is,：Adsorption tower A and adsorption tower B.For convenience of describing, inhaled with setting in Fig. 1
As a example attached tower A and adsorption tower B, introduce structure and the operation principle of rubbish landfill gas device for deoxidizing：
In FIG, adsorption tower A is provided with air inlet, scheduling product QI KOU, emptying regeneration mouth, upper all pressure mouths and lower all presses
Mouthful；The air intake control valve door labelling 1 of adsorption tower A represents；Scheduling product gas control valve door labelling 2 represents；Emptying Regeneration control
Valve labelling 3 represents；The air intake control valve door labelling 4 of adsorption tower B represents；Scheduling product gas control valve door labelling 5 represents；
Emptying Regeneration control valve labelling 6 represents；Upper all pressures mouth of adsorption tower A and adsorption tower B is connected by upper pressure-equalizing passageway, upper
Pressure-equalizing passageway is provided with Pressure and Control valve, is represented with labelling 7 in FIG；Lower all pressures mouth of adsorption tower A and adsorption tower B leads to
Cross down pressure-equalizing passageway to connect, in lower pressure-equalizing passageway, lower Pressure and Control valve is installed, is represented with labelling 8 in FIG；In FIG,
Numeral mark 9 represents control valve.
The rubbish landfill gas device for deoxidizing that this utility model provides, exceeded for solving oxygen content in landfill gas, improve rubbish
The grade of rubbish landfill gas and comprehensive utilization ratio.This utility model is the processing unit that rubbish landfill gas purify, its upstream end
Reason unit includes the systems such as desulfurization, decarburization, dehydration, and downstream is compression unit, and final products are compressed natural gas used as vehicle fuel.
With reference to Fig. 1, from rubbish landfill gas, the technique of deoxidation is：
1) landfill gas enter unstripped gas surge tank, and gas pressure is 0.5～1.6MPa (G), and temperature is 15～45 DEG C, and oxygen contains
Measure as 2～3%；
It can be seen that, the rubbish landfill gas of unstripped gas surge tank storage are to have removed substantial amounts of carbon dioxide, hydrogen sulfide and water etc.
The gas of impurity.
2) High Pressure Absorption：
Only open the air intake control valve door 1 of adsorption tower A and the scheduling product gas control valve door 2 of adsorption tower A, other valves are equal
Close, carry out High Pressure Absorption, after landfill gas enter adsorption tower A, oxygen is attracted in carbon molecular sieve, the product gas obtaining continue
It is transported to outer defeated after product gas surge tank, controls adsorption time is 45～90s；Wherein, in the product gas obtaining, oxygen content up to
To less than 0.5%.
3) all press：
After reaching adsorption time, adsorption tower A adsorption saturation, close air intake control valve door 1 and the adsorption tower of adsorption tower A
The scheduling product gas control valve door 2 of A, only opens Pressure and Control valve 7 and lower Pressure and Control valve 8, makes adsorption tower A and adsorption tower
The upper and lower UNICOM of B is all pressed, and all pressure time is 1～3s；
4) normal pressure regeneration：
After the completion of all pressing, open the emptying Regeneration control valve 3 of adsorption tower A, tail gas is discharged to tail gas buffer, and opens
Control valve 9, is introduced into methane content in product gas regulation tail gas and, to meet boiler use requirement, is then pressurized using roots blower
After be transported to boiler oil gas system；
5) air intake control valve door and the scheduling product gas control valve door of adsorption tower B while adsorption tower A normal pressure regenerates, are opened
Carry out High Pressure Absorption, this process is identical with the High Pressure Absorption of adsorption tower A；After adsorption tower B adsorption saturation, adsorption tower B and adsorption tower A
It is connected up and down and is all pressed, complete adsorption tower B regeneration and tail gas supercharging, be finally completed pressure swing adsorption cycles.
In this utility model, pressure swing adsorption system can adopt 2～8 adsorption towers, and single column is in parallel or two towers form one
Unit is in parallel again to constitute pressure swing adsorption system, to realize the purification of landfill gas.
The rubbish landfill gas device for deoxidizing that this utility model provides, can make oxygen content in landfill gas be reduced to less than 0.5%, first
The alkane response rate is 70～90%, adjusts the content of methane in tail gas, makes tail gas meet the use requirement of boiler, make utilization of LFG
Rate reaches 100%, reaches the purpose of landfill gas comprehensive utilization.
The above is only preferred implementation of the present utility model it is noted that common skill for the art
For art personnel, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improve and
Retouching also should regard protection domain of the present utility model.
Claims (2)
1. a kind of rubbish landfill gas device for deoxidizing is it is characterised in that include unstripped gas surge tank, pressure swing adsorption system, product gas
Surge tank, tail gas buffer and roots blower；Wherein, described pressure swing adsorption system includes n absorbing unit in parallel；Each institute
State the absorbing unit that absorbing unit is composition after single adsorption tower or m adsorption tower parallel connection；Wherein, m and n is natural number；m
Less than n；
For n absorbing unit, each described absorbing unit be provided with air inlet, scheduling product QI KOU, emptying regeneration mouth, upper all
Pressure mouth and lower all pressures mouth；The air inlet of described absorbing unit is connected to described unstripped gas surge tank by the 1st gas pipeline
Air vent；In described 1st gas pipeline, air intake control valve door is installed；The scheduling product QI KOU of described absorbing unit passes through scheduling product
Feed channel is connected to the air inlet of described product gas surge tank；In described scheduling product feed channel, scheduling product gas control valve is installed
Door；The emptying of described absorbing unit regenerates the air inlet that mouth is connected to described tail gas buffer by emptying regeneration conveyance conduit；
In described emptying regeneration conveyance conduit, emptying Regeneration control valve is installed；Upper all pressures mouth and the next phase of described absorbing unit
Connected by upper pressure-equalizing passageway between upper all pressures mouth of adjacent absorbing unit；Described upper pressure-equalizing passageway is provided with Pressure and Control valve
Door；Between lower all pressures mouth of described absorbing unit and lower all pressures mouth of next adjacent absorbing unit by lower pressure-equalizing passageway even
Connect；Described lower pressure-equalizing passageway is provided with lower Pressure and Control valve；
The air vent of described product gas surge tank is connected with the outside conveyance conduit of product gas；And, described product gas outwards convey
Regulation pipeline also drawn by pipeline；The described other end adjusting pipeline is communicated with the air inlet of described tail gas buffer, in described tune
Length of tubing is provided with control valve；The exhaust end of described tail gas buffer is connected to boiler oil gas system after roots blower
System.
2. rubbish landfill gas device for deoxidizing according to claim 1 is it is characterised in that also include master controller；Described total
Controller respectively with described air intake control valve door, described scheduling product gas control valve door, described emptying Regeneration control valve, described on
Pressure and Control valve, described lower Pressure and Control valve and described control valve connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620954151.5U CN205965419U (en) | 2016-08-26 | 2016-08-26 | Landfill gas device that deoxidizes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620954151.5U CN205965419U (en) | 2016-08-26 | 2016-08-26 | Landfill gas device that deoxidizes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205965419U true CN205965419U (en) | 2017-02-22 |
Family
ID=58035845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620954151.5U Active CN205965419U (en) | 2016-08-26 | 2016-08-26 | Landfill gas device that deoxidizes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205965419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939820A (en) * | 2018-09-19 | 2018-12-07 | 成都华西堂环保科技有限公司 | A kind of vacuum pressure swing adsorption system for oxygen production and method |
-
2016
- 2016-08-26 CN CN201620954151.5U patent/CN205965419U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939820A (en) * | 2018-09-19 | 2018-12-07 | 成都华西堂环保科技有限公司 | A kind of vacuum pressure swing adsorption system for oxygen production and method |
| CN108939820B (en) * | 2018-09-19 | 2024-05-28 | 成都华西堂环保科技有限公司 | Vacuum pressure swing adsorption oxygen generation system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 809 and 810, 8 / F, Chuangye building (Building 2, Xinghua Industrial Park), No.58, Second Street, Zhengzhou area (Jingkai), Henan pilot Free Trade Zone, Zhengzhou City, Henan Province, 450000 Patentee after: Shengao Lande Environmental Protection Technology Group Co.,Ltd. Address before: 450000 Zhengzhou economic and Technological Development Zone, Henan, 8, 809 and 810, No. 2, No. 2, Xinghua science and Technology Industrial Park. Patentee before: Land Environmental Protection Technology Group Co.,Ltd. |