CN205003009U - Cis -butenedioic anhydride on line analyzer tail gas sample preprocessing device - Google Patents
Cis -butenedioic anhydride on line analyzer tail gas sample preprocessing device Download PDFInfo
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- CN205003009U CN205003009U CN201520746344.7U CN201520746344U CN205003009U CN 205003009 U CN205003009 U CN 205003009U CN 201520746344 U CN201520746344 U CN 201520746344U CN 205003009 U CN205003009 U CN 205003009U
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- tail gas
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- washing tank
- butenedioic anhydride
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Abstract
The utility model provides a cis -butenedioic anhydride on line analyzer tail gas sample preprocessing device, includes washing tank, knockout drum, analysis appearance, it is consecutive through the pipeline between washing tank, knockout drum, the analysis appearance, link to each other through the pipeline between washing tank and the tail gas house steward, be equipped with absorbent import and absorbent export on the washing tank. The utility model discloses following beneficial effect has: one set of tail gas sample preprocessing device has been set up for detach the impurity that causes jam and scale deposit easily, thereby obtain tail gas uncontaminated relatively, solved the easily stifled and damage scheduling problem of on line analyzer, avoided frequent maintenance, thereby makeed the control of cis -butenedioic anhydride reaction sequence more stable. The investment of this device economizes, and is simple to use, reliable.
Description
Technical field
The utility model belongs to chemical production field, is specifically related to a kind of cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus.
Background technology
Cis-butenedioic anhydride reactor uses air and normal butane to be primary raw material, and under the effect of maleic anhydride catalyst, reaction generates cis-butenedioic anhydride.As the publication number Chinese invention patent " technological process of continuous production of succinic anhydride from hydrogenation of maleic anhydride coproduction succinic acid " that is CN103570650 discloses a kind of technological process of continuous production of succinic anhydride from hydrogenation of maleic anhydride coproduction succinic acid.
Cis-butenedioic anhydride reaction unit system is provided with the on-line checkingi of infrared spectrometric analyzer for reaction end gas, and main detected components is butane, CO, CO
2, cis-butenedioic anhydride, the analysis data obtained are for controlling whole cis-butenedioic anhydride course of reaction.
In cis-butenedioic anhydride course of reaction, except generation product cis-butenedioic anhydride, also can produce more impurity, reaction end gas component mainly contains O
2, N
2, butane, CO, CO
2, cis-butenedioic anhydride, acetic acid, acrylic acid, moisture content and tar, wherein cis-butenedioic anhydride, acetic acid, acrylic acid, tar etc. easily occluding device, produce fouling.In actual use, namely there is sampling pipe easily stifled, the analyser detecting device easily problems such as damage by contaminating impurities such as tar in analyser, analyze data easily to depart from, maintenance is frequent, cause cis-butenedioic anhydride course of reaction to be difficult to be effectively controlled, if things go on like this will affect the serviceable life of maleic anhydride catalyst.
Utility model content
The utility model is not enough for prior art, provides a kind of reduced investment for maleic anhydride production line, controls easy in-line analyzer tail gas sample pretreatment apparatus.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus, comprise washing tank, separating tank, analyser, be connected successively between described washing tank, separating tank, analyser by pipeline, described washing tank is connected by pipeline with between engine manifold; Described washing tank is provided with absorbing agent import and absorbing agent exports.
Analyser of the prior art is easily by the contaminating impurities such as tar, blocking pipeline, cause cisco unity malfunction, the utility model is for this problem, propose a solution: the gas in engine manifold is introduced in washing tank, simultaneously stability agent also enters in washing tank, most of impurity in tail gas absorb by absorbing agent, then tail gas enters in separating tank by pipeline, solid-liquid composition is separated further with gas componant, and the gas componant in the tail gas so after purifying enters in analyser again.Therefore, the utility model uses absorbing agent to carry out pre-service by the mode absorbed to tail gas sample, remove the material such as cis-butenedioic anhydride, acetic acid, acrylic acid, tar easily resulted in blockage with fouling, thus obtain relatively clean tail gas sample, effectively prevent impurity Failure analysis instrument.
Wherein, washing tank is mainly used in the impurity such as removing cis-butenedioic anhydride, acetic acid, acrylic acid, tar; Separating tank, mainly for separating of the absorbing agent of partial condensation, prevents absorbing agent Failure analysis instrument.
As preferably, described washing tank is provided with overflow vent, for flowing out for excessive absorbing agent.
As preferably, described separating tank is provided with leakage fluid dram, is generally located at bottom, for getting rid of solid-liquid residue.
As preferably, described washing tank is provided with the first liquid level gauge, and described separating tank is provided with the second liquid level gauge, and the arranging of liquid level gauge facilitates workman to check height of liquid level in tank body, is convenient to Controlling Technology step.
As preferably, described cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus also comprises cesspool, for receiving the waste liquid flowed out from absorbing agent outlet, overflow vent, leakage fluid dram.
Compared with prior art, the utility model has following beneficial effect: be provided with a set of tail gas sample pretreatment apparatus, for removing the impurity easily resulted in blockage with fouling, thus obtain relatively clean tail gas, solve the in-line analyzer easily problem such as stifled and damage, avoid frequent maintenance, thus it is more stable that cis-butenedioic anhydride course of reaction is controlled.This plant investment is economized, and uses simple, reliable.
Accompanying drawing explanation
Fig. 1 is the utility model process flow diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
See Fig. 1, a kind of cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus, comprise washing tank 3, separating tank 8, analyser 11, be connected successively between described washing tank 3, separating tank 8, analyser 11 by pipeline, described washing tank 3 is connected by pipeline with between engine manifold 1; Described washing tank 3 is provided with absorbing agent import and absorbing agent exports, and described washing tank 3 is also provided with overflow vent, and described separating tank 8 is also provided with leakage fluid dram.
In present embodiment, described washing tank 3 is provided with the first liquid level gauge 13, and described separating tank 8 is provided with the second liquid level gauge 14; Described a kind of cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus also comprises cesspool 12.
During pretreatment unit work of the present utility model, washing tank 3 receives the tail gas sample 2 from engine manifold 1, tail gas sample 2 obtains relatively clean secondary tail gas sample 5 after absorbing agent 4 purified treatment, absorbs the absorbing agent waste liquid 6 after impurity from the absorbing agent outlet emptying bottom washing tank 3 to cesspool 12.Washing tank 3 tank body side is provided with overflow vent, when absorbing agent liquid level is too high, can directly overflow to cesspool 12.Above-mentioned separating tank 8, receive the secondary tail gas sample 5 after purifying from washing tank 3, after the absorbing agent of separation of liquid, three tail gas samples 9 of purification are sent to in-line analyzer 11, and the stripping liquid 10 separated can from the leakage fluid dram emptying bottom separating tank 8 to cesspool 12.
In the utility model, the absorbing agent 4 and cis-butenedioic anhydride, acetic acid, acrylic acid, the tar that use dissolve each other, with normal butane, carbon monoxide, carbon dioxide indissoluble or insoluble; Concrete, described absorbing agent 4 is one in water, bialkyl ortho phthalate class, hexahydrobenzene dioctyl phthalate dialkyl esters or its mixed solvent.
After the absorption and detachment process of above-mentioned impurity, relatively clean tail gas can be obtained, solve the in-line analyzer easily problem such as stifled and damage, avoid frequent maintenance, thus it is more stable to make cis-butenedioic anhydride course of reaction control, and is conducive to the life cycle of extending catalyst.
Claims (5)
1. a cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus, it is characterized in that, comprise washing tank (3), separating tank (8), analyser (11), described washing tank (3), separating tank (8), analyser are connected successively by pipeline between (11), are connected between described washing tank (3) with engine manifold (1) by pipeline; Described washing tank (3) is provided with absorbing agent import and absorbing agent exports.
2. a kind of cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus according to claim 1, it is characterized in that, described washing tank (3) is provided with overflow vent.
3. a kind of cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus according to claim 2, it is characterized in that, described separating tank (8) is provided with leakage fluid dram.
4. a kind of cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus according to any one of claims 1 to 3, it is characterized in that, described washing tank (3) is provided with the first liquid level gauge (13), and described separating tank (8) is provided with the second liquid level gauge (14).
5. a kind of cis-butenedioic anhydride in-line analyzer tail gas sample pretreatment apparatus according to claim 4, is characterized in that, also comprise cesspool (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746344.7U CN205003009U (en) | 2015-09-25 | 2015-09-25 | Cis -butenedioic anhydride on line analyzer tail gas sample preprocessing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746344.7U CN205003009U (en) | 2015-09-25 | 2015-09-25 | Cis -butenedioic anhydride on line analyzer tail gas sample preprocessing device |
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| Publication Number | Publication Date |
|---|---|
| CN205003009U true CN205003009U (en) | 2016-01-27 |
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| CN201520746344.7U Active CN205003009U (en) | 2015-09-25 | 2015-09-25 | Cis -butenedioic anhydride on line analyzer tail gas sample preprocessing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879594A (en) * | 2020-07-29 | 2020-11-03 | 濮阳市盛源能源科技股份有限公司 | Water washing device for reaction generated gas in process of preparing maleic anhydride by oxidizing n-butane |
-
2015
- 2015-09-25 CN CN201520746344.7U patent/CN205003009U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879594A (en) * | 2020-07-29 | 2020-11-03 | 濮阳市盛源能源科技股份有限公司 | Water washing device for reaction generated gas in process of preparing maleic anhydride by oxidizing n-butane |
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| GR01 | Patent grant |