CN206001278U - A kind of tail gas nitrogen envelope producing 4,6 dihydroxy-pyrimidines and absorption system - Google Patents
A kind of tail gas nitrogen envelope producing 4,6 dihydroxy-pyrimidines and absorption system Download PDFInfo
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- CN206001278U CN206001278U CN201620963549.5U CN201620963549U CN206001278U CN 206001278 U CN206001278 U CN 206001278U CN 201620963549 U CN201620963549 U CN 201620963549U CN 206001278 U CN206001278 U CN 206001278U
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Abstract
The utility model discloses a kind of tail gas nitrogen envelope producing 4,6 dihydroxy-pyrimidines and absorption system, belong to chemical process equipment technical field, the system is connected with the offgas duct of 4,6 dihydroxy-pyrimidine reactors, it is critical only that：Described system include controller, be all controlled by the controller and head and the tail be sequentially connected condenser, nitrogen stabilization pressure tank, film-falling absorption tower, tail gas absorption tank, the input of condenser is connected with offgas duct, coolant inlet pipe respectively, and the outfan of condenser is also connected with coolant outlet pipe.This utility model flow process rationally, has preferable treatment effect to such tail gas, improves security performance, reduces pollution, has saved cost, and high degree of automation reduces labor strength.
Description
Technical field
This utility model belongs to chemical process equipment technical field, is related to a kind of tail gas producing 4,6- dihydroxy-pyrimidine
Nitrogen envelope and absorption system.
Background technology
In pyrimidine production process there is combustable gas concentration height in tail gas treatment process, and ammonia taste is big, and production safety risk is big, gas
The problems such as taste is difficult.Traditional vent gas treatment recovery system is that tail gas condensing is obtained discharge after liquid alcohol.With environmental protection shape
Gesture all the more severe, this extensive process of such gas can not meet environmental requirement, also increasingly cause production simultaneously
The concern of unit.In pyrimidine production process, tail gas useful component is higher, if energy effective recycling, will bring larger to enterprise
Economic benefit, but exist in conventional process and reclaim thorough, waste of resource, and unsafe factor.So needing badly
Find a kind of processing equipment of more highly effective and safe and system.
Utility model content
This utility model in order to solve the above problems, devise a kind of tail gas nitrogen envelope producing 4,6- dihydroxy-pyrimidine and
Absorption system, rationally, equipment is simple for the system flow process, effectively can inhale the tail gas of 4,6- dihydroxy-pyrimidine response system
Receive, there is higher practicality.
The technical solution adopted in the utility model is：A kind of tail gas nitrogen envelope producing 4,6- dihydroxy-pyrimidine and absorption system
System, the system is connected with the offgas duct of 4,6- dihydroxy-pyrimidine reactor, it is critical only that：Described system includes controller, all
Be controlled by the controller and head and the tail be sequentially connected condenser, nitrogen stabilization pressure tank, film-falling absorption tower, tail gas absorption tank, condenser
Input is connected with offgas duct, coolant inlet pipe respectively, and the outfan of condenser is also connected with coolant outlet pipe.
The alcohol recycling being connected with the outfan of condenser is also included in system.
Described nitrogen stabilization pressure tank includes and the electric controlled regulating valve being arranged on the air inlet pipeline of nitrogen stabilization pressure tank and and nitrogen
The tank connected pressure transmitter of gas voltage stabilizing, the signal output part of pressure transmitter is connected with the signal input part of controller, controls
The control end of device is connected with the controlled end of electric controlled regulating valve.
It is additionally provided with described system by gas pipeline and the tank connected liquid seal can of tail gas absorption, liquid seal can is provided with
Emptying chimney；Containing ammonia passage tank connected with fluid-tight is provided with automatic valve, is provided with liquidometer, liquid level in liquid seal can
The signal output part of meter is connected with the signal input part of controller, and the control end of controller is connected with the controlled end of automatic valve.
Overflow pipe is additionally provided with described liquid seal can, the overflow pipe other end is connected with tail gas absorption tank.
Described tail gas absorption tank outfan is connected with reactor by circulating pump.
Described tail gas absorption tank outfan is connected with film-falling absorption tower by circulating pump.
The beneficial effects of the utility model are：1. methanol and ammonia can be separately recovered and utilize by this utility model,
Improve resource utilization, then protected by nitrogen, improve safety, produce good economic and social benefit simultaneously.2. tail gas
Processing system automatic interlock, process high degree of automation, reduces labor strength, and has higher safety and environmental protection performance.
Brief description
Fig. 1 is structural representation of the present utility model.
In figure, 1 is offgas duct, and 2 is coolant inlet pipe, and 3 is coolant outlet pipe, and 4 is condenser, and 5 is alcohol recycling can, and 6 is nitrogen
Vacuum tank, 7 is electric controlled regulating valve, and 8 is automatic valve, and 9 is liquid seal can, and 10 is film-falling absorption tower, and 11 is tail gas absorption tank, and 12 is to follow
Ring pump, 13 is reactor, and 14 is gas pipeline, and 15 is overflow pipe, and 16 is chimney.
Specific embodiment
This utility model research worker has carried out depth to 4,6- dihydroxy-pyrimidine response system tail gas nitrogen envelope and absorption system
The research entering and experiment, find to cause the intractable reason of tail gas to be mainly fuel gas content height in tail gas, ammonia concentration is big,
Wherein fuel gas is mainly methanol, first can condense methanol gas, then passes through nitrogen-sealed, and safe and reliable, ammonia leads to again
Cross falling film absorption system thoroughly to absorb, can qualified discharge, a kind of effective 4,6- dihydroxy-pyrimidine response system has been invented with this
Tail gas nitrogen envelope and absorption system.
With reference to embodiment, this utility model is described in detail.
As shown in figure 1, this is returned using new inclusion offgas duct 1, coolant inlet pipe 2, coolant outlet pipe 3, tail gas condenser 4, alcohol
Closed cans 5, described tail gas 1 pass through condenser 4 by methanol condensed to alcohol recycling can 5.Afterwards, gas passes through nitrogen stabilization pressure tank 6, nitrogen again
Gas passes through electric controlled regulating valve 7 and pressure transmitter interlocking, and the stable pressure-fired in setting, so, by the nitrogen of steady pressure
Protection, completely cuts off fuel gas, makes system safe and reliable.Then gas enters film-falling absorption tower 10,12 dozens of cyclic absorption of circulating pump
Tail gas, good absorbing flow to tail gas absorption tank 11 containing ammonia.The gas of tail gas absorption tank 11 enters fluid-tight by gas pipeline 14
Tank 9, then discharged by chimney 16.Technique contains ammonia and stablizes in setting value by automatic valve 8 and liquidometer interlocking, and liquid contains ammonia
Water first flows to liquid seal can 9, then flows to tail gas absorption tank 11 by overflow pipe 15, the squeezing into instead through circulating pump 12 containing ammonia of good absorbing
Answer kettle 13 recycled.Tail gas passes through this system, 4,6- dihydroxy-pyrimidine response system tail gas is effectively processed, has
It is recycled it is achieved that safely cleaning ecological requirements with material.
The temperature-reducing medium that described condenser 4 uses can be water at low temperature, chilled brine, glycol water；
This utility model flow process rationally, has preferable treatment effect to such tail gas, improves security performance, reduces dirt
Dye, has saved cost, and high degree of automation reduces labor strength.
Claims (7)
1. a kind of tail gas nitrogen envelope producing 4,6- dihydroxy-pyrimidine and absorption system, the system is reacted with 4,6- dihydroxy-pyrimidine
The offgas duct (1) of kettle (13) be connected it is characterised in that：Described system include controller, be all controlled by the controller and head and the tail according to
The condenser (4) of secondary connection, nitrogen stabilization pressure tank (6), film-falling absorption tower (10), tail gas absorption tank (11), the input of condenser (4)
End is connected with offgas duct (1), coolant inlet pipe (2) respectively, and the outfan of condenser (4) is also connected with coolant outlet pipe (3).
2. a kind of tail gas nitrogen envelope producing 4,6- dihydroxy-pyrimidine according to claim 1 and absorption system, its feature
It is：The alcohol recycling can (5) being connected with the outfan of condenser (4) is also included in system.
3. a kind of tail gas nitrogen envelope producing 4,6- dihydroxy-pyrimidine according to claim 1 and absorption system, its feature
It is：Described nitrogen stabilization pressure tank (6) includes and the electric controlled regulating valve (7) being arranged on the air inlet pipeline of nitrogen stabilization pressure tank (6)
And the pressure transmitter being connected with nitrogen stabilization pressure tank (6), the signal output part of pressure transmitter and the signal input part of controller
Connect, the control end of controller is connected with the controlled end of electric controlled regulating valve (7).
4. a kind of tail gas nitrogen envelope producing 4,6- dihydroxy-pyrimidine according to claim 1 and absorption system, its feature
It is：It is additionally provided with the liquid seal can (9) being connected by gas pipeline (14), liquid seal can with tail gas absorption tank (11) in described system
(9) it is provided with emptying chimney (16) on；Automatic valve (8) is provided with the passage containing ammonia being connected with liquid seal can (9), in fluid-tight
It is provided with liquidometer, the signal output part of liquidometer is connected with the signal input part of controller, the control end of controller in tank (9)
It is connected with the controlled end of automatic valve (8).
5. a kind of tail gas nitrogen envelope producing 4,6- dihydroxy-pyrimidine according to claim 4 and absorption system, its feature
It is：Overflow pipe (15) is additionally provided with described liquid seal can (9), overflow pipe (15) other end is with tail gas absorption tank (11) even
Connect.
6. a kind of tail gas nitrogen envelope producing 4,6- dihydroxy-pyrimidine according to claim 1 and absorption system, its feature
It is：Described tail gas absorption tank (11) outfan is connected with reactor (13) by circulating pump (12).
7. a kind of tail gas nitrogen envelope producing 4,6- dihydroxy-pyrimidine according to claim 1 and absorption system, its feature
It is：Described tail gas absorption tank (11) outfan is connected with film-falling absorption tower (10) by circulating pump (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620963549.5U CN206001278U (en) | 2016-08-29 | 2016-08-29 | A kind of tail gas nitrogen envelope producing 4,6 dihydroxy-pyrimidines and absorption system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620963549.5U CN206001278U (en) | 2016-08-29 | 2016-08-29 | A kind of tail gas nitrogen envelope producing 4,6 dihydroxy-pyrimidines and absorption system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206001278U true CN206001278U (en) | 2017-03-08 |
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ID=58197759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620963549.5U Active CN206001278U (en) | 2016-08-29 | 2016-08-29 | A kind of tail gas nitrogen envelope producing 4,6 dihydroxy-pyrimidines and absorption system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206001278U (en) |
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2016
- 2016-08-29 CN CN201620963549.5U patent/CN206001278U/en active Active
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