CN205641803U - System for utilize liquid laughing gas of adipic acid tail gas production - Google Patents
System for utilize liquid laughing gas of adipic acid tail gas production Download PDFInfo
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- CN205641803U CN205641803U CN201620366677.1U CN201620366677U CN205641803U CN 205641803 U CN205641803 U CN 205641803U CN 201620366677 U CN201620366677 U CN 201620366677U CN 205641803 U CN205641803 U CN 205641803U
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- gas
- adipic acid
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- nitrogen
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Abstract
The utility model discloses a system for utilize liquid laughing gas of adipic acid tail gas production, including the heat exchanger, a rectifying column passes through the tube coupling with the heat exchanger for being directed at adipic acid tail gas after the cooling carries out rectification. the technical scheme of the utility model can carry out liquid state separation, purification to adipic acid device tail gas, production is accorded with the liquid laughing gas product of medical level purity. The problem that contains N2O's adipic acid tail gas discharged and polluting environment had both been solved in simple, the easy operation of process flow, had realized cleaner production, had improved the added value of product simultaneously again.
Description
Technical field
This utility model relates to the recycling field of tail gas, particularly relates to one and utilizes adipic acid tail gas raw
The system of production fluid state laughing gas.
Background technology
Adipic acid is a kind of important fine chemical product, generally, often produces 1mol adipic acid secondary
Produce the N of 0.8～1.0mol2O, N2O is a kind of gas potentially resulting in greenhouse effect and ozone layer minimizing,
It is CO that its unimolecule heats potentiality2298 times, therefore, the directly discharge of adipic acid tail gas can cause greenhouse
Effect.Along with the demand of adipic acid is increasing, adipic acid production scale constantly expands, containing N2O tail
The improvement of gas is just particularly important.
N2O is commonly called as " laughing gas ", has oxidisability and anesthetic action, is widely used in medical treatment, electronics row
Industry, is a kind of gas products with good economic worth.
Containing N2O tail gas is directly discharged to air, not only results in environmental pollution, also can cause serious money
Source is wasted, and therefore adipic acid tail gas is carried out recycling and seems particularly significant, and has considerable economy
Benefit.
At present, domestic laughing gas market is well sold and in short supply, and the laughing gas of the overwhelming majority will be from external import, and import price is relatively
High.Domestic also not from adipic acid tail gas or other are containing N2O mixed gas is produced the technology of liquid laughing gas
Scheme.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of effective minimizing and pollutes own with the utilization of waste
The system of diacid End gas production liquid laughing gas.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, including:
For the heat exchanger that adipic acid tail gas is cooled down；
For the adipic acid tail gas after cooling is carried out rectification, adipic acid tail gas separation is made to go out rich nitrogen, liquid
The rectifying column of laughing gas, is connected by pipeline with described heat exchanger.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, described rectifying column
The rich nitrogen outlet of overhead separator and the first pipeline connect, described first pipeline after heat exchanger with first
The entrance connection of choke valve, so that the rich nitrogen in the first pipeline passes through first after being cooled by heat exchanger
Choke valve throttling cooling.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, described rectifying device
Also include that nitrogen refrigeration system, described nitrogen refrigeration system include the nitrogen compressor for compressing nitrogen,
The gas outlet of nitrogen compressor passes through the second pipeline, the 3rd pipeline connection second throttle, described second section
Stream valve connects the gas access of nitrogen compressor by reflux pipe, and described nitrogen is at nitrogen compressor and second
Circulate between choke valve, the second pipeline sequentially pass through after the tower bottom reboiler of heat exchanger, rectifying column with the 3rd pipe
Road connect, the nitrogen in the second pipeline heat exchanger, rectifying column tower bottom reboiler in cool, the 3rd
Pipeline connects second throttle after heat exchanger, and the nitrogen in the 3rd pipeline provides cold in heat exchanger,
Reflux pipe sequentially passes through the overhead condenser of rectifying column, heat exchanger, and the nitrogen in reflux pipe is at rectifying column
Overhead condenser, heat exchanger provides cold.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, described rectifying column
Bottom liquid laughing gas outlet connect with liquid laughing gas discharge pipe, liquid laughing gas discharge pipe after heat exchanger and
The entrance connection of the 3rd choke valve, so that the liquid laughing gas in liquid laughing gas discharge pipe is by heat exchanger cooling fall
Cooled by the 3rd choke valve throttling after temperature.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, also includes:
For the first adipic acid tail-gas compressor before cooling adipic acid tail gas being compressed；
For adipic acid tail gas after compression is carried out the cleaning equipment of carbonization treatment, dried, with described the
One adipic acid tail-gas compressor is connected by pipeline, and cleaning equipment is connected by pipeline with heat exchanger.
The advantage of the technical solution of the utility model is adipic acid plant tail gas can to carry out Liquid segregation, carry
Pure, produce and obtain meeting the liquid laughing gas product of medical grade purity.Technological process simply, easily operate, both solved
Determine containing N2The problem of the adipic acid pollution emission environment of O, it is achieved that cleaning produces, returns again simultaneously
Receive N2O, improves value-added content of product, it is achieved that turns harm into good, turn waste into wealth, and has economy, life
State environment and the important meaning of social sustainable development.
Accompanying drawing explanation
Fig. 1 is the structural representation of the system utilizing adipic acid End gas production liquid laughing gas of the present utility model.
Detailed description of the invention
As it is shown in figure 1, the system utilizing adipic acid End gas production liquid laughing gas of the present utility model, including:
For the heat exchanger E1 that adipic acid tail gas is cooled down；
For the adipic acid tail gas after cooling is carried out rectification, adipic acid tail gas separation is made to go out rich nitrogen, liquid
The rectifying column T2 of laughing gas, is connected by pipeline with heat exchanger.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, rectifying column T2's
Rich nitrogen outlet and first pipeline 11 of overhead separator V1 connect, and the first pipeline 11 is after heat exchanger
Connect with the entrance of first throttle valve V10, so that the rich nitrogen in the first pipeline is by heat exchanger cooling fall
By the throttling cooling of first throttle valve after temperature.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, rectifying device also wraps
Including nitrogen refrigeration system, nitrogen refrigeration system includes the nitrogen compressor C2 for compressing nitrogen, nitrogen
The gas outlet of compressor connects second throttle V20 by the second pipeline the 12, the 3rd pipeline 13, and second
Choke valve connects the gas access of nitrogen compressor by reflux pipe 30, and nitrogen is at nitrogen compressor and the
Circulating between two choke valves, the second pipeline 12 sequentially passes through the tower bottom reboiler of heat exchanger E1, rectifying column
Connecting with the 3rd pipeline 13 after E2, the nitrogen in the second pipeline is at heat exchanger, the tower bottom reboiler of rectifying column
In cool, the 3rd pipeline connects second throttle V20, the nitrogen in the 3rd pipeline after heat exchanger
Thering is provided cold in heat exchanger, reflux pipe sequentially passes through the overhead condenser E3 of rectifying column, heat exchanger,
Nitrogen in reflux pipe provides cold in the overhead condenser E3, heat exchanger E1 of rectifying column.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, the bottom of rectifying column
Liquid laughing gas outlet connect with liquid laughing gas discharge pipe 40, liquid laughing gas discharge pipe 40 is through heat exchanger
After E1, the entrance with the 3rd choke valve V30 connects, so that the liquid laughing gas in liquid laughing gas discharge pipe passes through
Heat exchanger is cooled by the 3rd choke valve throttling after cooling.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, also includes:
For the first adipic acid tail-gas compressor C1 before cooling adipic acid tail gas being compressed；
For adipic acid tail gas after compression is carried out the cleaning equipment T1 of carbonization treatment, dried, with the
One adipic acid tail-gas compressor C1 is connected by pipeline, and cleaning equipment T1 and heat exchanger E1 is by pipeline even
Connect.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, also includes:
For the adipic acid tail gas after compression is carried out pretreatment process, make the pre-of adipic acid tail gas removing acetylene
Processing means, is connected by pipeline with the first adipic acid tail-gas compressor；
For the adipic acid tail gas after carrying out pretreatment process being carried out the second adipic acid tail gas of recompression
Compressor, is connected by pipeline with pretreatment unit, the second adipic acid tail-gas compressor and cleaning equipment T1
Connected by pipeline.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model is utilized to reclaim adipic acid tail gas
Embodiment as follows:
The component of adipic acid tail gas is as shown in table 1, and pressure 2bar, temperature 40 DEG C, flow are 2000Nm3/ h,
Enter the first adipic acid tail-gas compressor C1, be compressed to 11bar through the first compression section, then carry out pretreatment
Operation, removes acetylene impurities, and pretreated gas enters the second compression section and is compressed to 25bar, enters
Cleaning equipment T1 purifies, and makes CO in gas2Content≤20ppm, tail gas dew point≤-65 DEG C, deliver to afterwards
Heat exchanger E1 is cooled to-60 DEG C, sends into rectifying column T2 rectification, and the liquid phase material at the bottom of rectifying tower is through essence
The tower bottom reboiler E2 evaporating tower constantly heats, and light component is constantly evaporated, N2O constantly concentrates, finally from tower
End isolated liquid laughing gas, supercool through heat exchanger E1 cooling, then after the 3rd choke valve V30 throttling
To medical grade liquid laughing gas product, flow is 630Nm3/ h, temperature is-60 DEG C, and pressure is 0.5MPaG,
Laughing gas component is as shown in table 1.
The overhead stream of rectifying column T2 is through the continuous reflux condensation mode of overhead condenser E3, in overhead separator
In V1, heavy constituent is separated, and sends back to rectifying column T2, isolated light group by overhead separator V1
Dividing the richest nitrogen, flow is 1196Nm3/ h, temperature is-120 DEG C, and pressure is 1.9MPaG, send
Deliver to cleaning equipment T1 to heat exchanger E1 rewarming use to room temperature, decompression as regeneration gas.
0.08MPaG, 32 DEG C, 7000Nm3The nitrogen of/h enters nitrogen compressor C2 and is compressed to 1.0MPaG
After, enter heat exchanger E1 be cooled to 5 DEG C, enter rectifying column tower bottom reboiler E2 after be cooled to-8 DEG C,
Return again to heat exchanger E1 be cooled to further-60 DEG C, through second throttle V20 be depressurized to-123 DEG C/2bar,
After the overhead condenser E3 heat exchange of rectifying column, be warming up to-92 DEG C again, return heat exchanger E1 rewarming to room temperature,
Finally enter the entrance of nitrogen compressor C2, complete refrigerant cycle.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, pretreatment unit bag
Include feed gas heater, the acetylene reactor linked together.
The system utilizing adipic acid End gas production liquid laughing gas of the present utility model, wherein, cleaning equipment includes
Absorption tower, regenerator, drying tower.
Table 1 each material component table
Below it is only preferred implementation of the present utility model, it is noted that common for the art
For technical staff, on the premise of without departing from this utility model principle, it is also possible to make some improvement and profit
Decorations, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (4)
1. the system utilizing adipic acid End gas production liquid laughing gas, it is characterised in that including:
For the heat exchanger that adipic acid tail gas is cooled down；
For the adipic acid tail gas after cooling is carried out rectification, adipic acid tail gas separation is made to go out rich nitrogen, the rectifying column of liquid laughing gas, it is connected by pipeline with described heat exchanger, the rich nitrogen outlet of the overhead separator of described rectifying column and the first pipeline connect, described first pipeline entrance with first throttle valve after heat exchanger connects so that the rich nitrogen in the first pipeline cooled by heat exchanger after by the throttling cooling of first throttle valve.
nullUtilize the system of adipic acid End gas production liquid laughing gas the most as claimed in claim 1，It is characterized in that，Described rectifying device also includes nitrogen refrigeration system，Described nitrogen refrigeration system includes the nitrogen compressor for compressing nitrogen，The gas outlet of nitrogen compressor passes through the second pipeline、3rd pipeline connection second throttle，Described second throttle connects the gas access of nitrogen compressor by reflux pipe，Described nitrogen circulates between nitrogen compressor and second throttle，Second pipeline sequentially passes through heat exchanger、With the 3rd pipeline connection after the tower bottom reboiler of rectifying column，Nitrogen in second pipeline is at heat exchanger、The tower bottom reboiler of rectifying column cools，3rd pipeline connects second throttle after heat exchanger，Nitrogen in 3rd pipeline provides cold in heat exchanger，Reflux pipe sequentially passes through the overhead condenser of rectifying column、Heat exchanger，Nitrogen in reflux pipe is at the overhead condenser of rectifying column、Heat exchanger provides cold.
Utilize the system of adipic acid End gas production liquid laughing gas the most as claimed in claim 2, it is characterized in that, the liquid laughing gas outlet of the bottom of described rectifying column connects with liquid laughing gas discharge pipe, liquid laughing gas discharge pipe entrance with the 3rd choke valve after heat exchanger connects, so that the liquid laughing gas in liquid laughing gas discharge pipe is cooled by the 3rd choke valve throttling after being cooled by heat exchanger.
Utilize the system of adipic acid End gas production liquid laughing gas the most as claimed in claim 3, it is characterised in that also include:
For the first adipic acid tail-gas compressor before cooling adipic acid tail gas being compressed；
For adipic acid tail gas after compression is carried out the cleaning equipment of carbonization treatment, dried, being connected by pipeline with described first adipic acid tail-gas compressor, cleaning equipment is connected by pipeline with heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620366677.1U CN205641803U (en) | 2016-04-27 | 2016-04-27 | System for utilize liquid laughing gas of adipic acid tail gas production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620366677.1U CN205641803U (en) | 2016-04-27 | 2016-04-27 | System for utilize liquid laughing gas of adipic acid tail gas production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205641803U true CN205641803U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620366677.1U Active CN205641803U (en) | 2016-04-27 | 2016-04-27 | System for utilize liquid laughing gas of adipic acid tail gas production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783422A (en) * | 2016-04-27 | 2016-07-20 | 北京中科瑞奥能源科技股份有限公司 | Method and system for producing liquid-state laughing gas with adipic acid tail gas |
-
2016
- 2016-04-27 CN CN201620366677.1U patent/CN205641803U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783422A (en) * | 2016-04-27 | 2016-07-20 | 北京中科瑞奥能源科技股份有限公司 | Method and system for producing liquid-state laughing gas with adipic acid tail gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhu Qian Inventor after: Yan Hairui Inventor after: Ding Shengjun Inventor before: Xu Xiaoqin Inventor before: Zhu Qian |
|
| CB03 | Change of inventor or designer information |