CN105107440A - Explosion-proof equipment applied to epsilon-caprolactone production process - Google Patents
Explosion-proof equipment applied to epsilon-caprolactone production process Download PDFInfo
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- CN105107440A CN105107440A CN201510484830.0A CN201510484830A CN105107440A CN 105107440 A CN105107440 A CN 105107440A CN 201510484830 A CN201510484830 A CN 201510484830A CN 105107440 A CN105107440 A CN 105107440A
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Abstract
The invention discloses explosion-proof equipment applied to an epsilon-caprolactone production process. The equipment comprises a buffer container and a pressure relief pipeline in a general-branch structure, wherein the pipe end of a general pipe of the pressure relief pipeline is communicated to the buffer container, the pipe ends of two branch pipes of the pressure relief pipeline are communicated to an oxidation reactor wall separately, the buffer container is communicated to the oxidation reactor through a reflux condensation pipeline, a fusible cock body is mounted at the communicated part at one of the pipe ends of two branch pipes of oxidation reactor, the fusible cock body is opened and filled with a fusible alloy, and an explosion-proof sheet I s mounted at the communicated part at the other one of the pipe ends of two branch pipes of oxidation reactor. According to the explosion-proof equipment disclosed by the invention, the consumption of raw materials is reduced and the yield is improved. The safety guarantee is more intact, and the problem that explosion is easily induced as the reactor is small in space, the oxidizing reaction is too fast in heat release speed, and the pressure is excessive.
Description
Technical field
The present invention relates to explosion-protection equipment field, specifically a kind of explosion-protection equipment being applied to 6-caprolactone production technology.
Background technology
Both at home and abroad
ε-caprolactone (
ε-CL) production technology is mainly peroxy acid oxidizing process, H
2o
2oxidizing process, O
2/ air oxidation process and biological oxidation process etc. are wherein medium, H with organic acid
2o
2for the synthesis of oxidizer catalytic peroxyester
εthe method of-CL the most people paid close attention to.This technique chemically principle is explained, first step reaction is that the hydroperoxidation of acetic anhydride and low concentration generates Peracetic acid, and it is that Peracetic acid and cyclohexanone react and generate that second step reacts
ε-CL, above-mentioned two steps are all exothermic reaction.
For oxidation reactor, due to continuous two step exothermic reactions, reaction system temperature and pressure is caused to raise.Temperature and pressure is the major parameter of reaction system.Once raw material feeding, cooling system etc. go wrong, when rate of heat release is greater than rate of heat transfer, just easily reacts out of control, cause reaction temperature runaway, then cause the temperature and pressure of reaction system sharply to raise.Pressure sharply raises and can not be effectively controlled, and causes pressure to exceed certain limit, cause the destruction of normal operation, even catalytic unit burnt, initiator reactor blast.Current is arrange rupture pressure disc or rupture disk on reactor for the existing explosion-protection equipment containing acid, oxidation reaction substantially.Such as, immediately below the feeder of airtight reaction vessel internal upper part, a set of burst disk is installed, or is connected in series one or more burst disk successively from top to bottom again under it, under the reactor of most next stage, have conveying device.Reactor is imported and exported by cylinder, support roller, scraper, guide wheel and heat transferring medium and is formed.A kind of explosion-protection equipment of independent installation, sensitivity is low, once malfunctioning, consequence is serious, the easy contaminated environment of material of blast release, and easily produces second-time burning after venting of dust explosion.
summary of the inventionthe object of this invention is to provide a kind of explosion-protection equipment being applied to 6-caprolactone production technology, to solve oxidation reactor pressure release Problems existing in the production of prior art 6-caprolactone.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of explosion-protection equipment being applied to 6-caprolactone production technology, it is characterized in that: comprise buffer container, and be divided into two total-relief pipeline of separation structure, relief pipeline house steward pipe end is communicated to buffer container, relief pipeline two is in charge of pipe end and is communicated with respectively on the wall of 6-caprolactone production oxidation reactor gas phase portion, described buffer container passes through condensing reflux pipeline connection to oxidation reactor charging aperture leading portion, described oxidation reactor gas phase portion wall and one of them be in charge of in pipe end connectivity part meltable cock body be installed, have in meltable cock body to be communicated with in oxidation reactor and be in charge of interior through hole with corresponding, fusible alloy is filled with in through hole, oxidation reactor gas phase portion wall and another be in charge of in pipe end connectivity part rupture disk be installed.
Described a kind of explosion-protection equipment being applied to 6-caprolactone production technology, is characterized in that: the house steward in described relief pipeline is provided with control valve, and in relief pipeline, be in charge of corresponding with burst disk is also provided with control valve.
Described a kind of explosion-protection equipment being applied to 6-caprolactone production technology, is characterized in that: described control valve is spring check valve, and control valve conducting direction is that oxidation reactor is to buffer container.
Described a kind of explosion-protection equipment being applied to 6-caprolactone production technology, is characterized in that: also comprise chemoreceptor, the inductive probe of chemoreceptor is arranged in oxidation reactor, and chemoreceptor is connected with outside PLC.
Described a kind of explosion-protection equipment being applied to 6-caprolactone production technology, is characterized in that: in described meltable cock body, through hole is conical screw hole.
Described a kind of explosion-protection equipment being applied to 6-caprolactone production technology, is characterized in that: described fusible alloy is made up of low-melting point metal alloy, at least two kinds in the preferred lead of low-melting point metal alloy, tin, cadmium.
Described a kind of explosion-protection equipment being applied to 6-caprolactone production technology, is characterized in that: described oxidation reactor is heat sealing on seal receptacle, is provided with pressure limiting inductor in seal receptacle.
Described a kind of explosion-protection equipment being applied to 6-caprolactone production technology, is characterized in that: be also provided with auxiliary heat generating core in described oxidation reactor.
The present invention installs the inductive probe of chemoreceptor in oxidation reactor, by chemoreceptor monitoring oxidation reactor system volatile acid concentration, and excessive volatile component can be carried by meltable cock body, rupture disk pressure release in time, and again send into oxidation reactor by condensation cycle pipeline, save consumption of raw materials, improve productive rate, and make safety guarantee more complete, solve because space reactor is little, oxidation reaction exotherm rate is too fast, the excessive problem that easily set off an explosion of air pressure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Shown in Figure 1, a kind of explosion-protection equipment being applied to 6-caprolactone production technology, comprise buffer container 106, and be divided into two total-relief pipeline 111 of separation structure, relief pipeline 111 house steward pipe end is communicated to buffer container 106, relief pipeline 111 two is in charge of pipe end and is communicated with respectively on the wall of 6-caprolactone production oxidation reactor 101 gas phase portion, buffer container 106 is communicated to oxidation reactor 101 charging aperture leading portion by condensing reflux pipeline 107, oxidation reactor 101 gas phase portion wall and one of them be in charge of in pipe end connectivity part meltable cock body 105 be installed, have in meltable cock body 105 to be communicated with in oxidation reactor 101 and be in charge of interior through hole with corresponding, fusible alloy is filled with in through hole, oxidation reactor 101 gas phase portion wall and another be in charge of in pipe end connectivity part rupture disk 108 be installed.
House steward in relief pipeline 111 is provided with control valve 110, in relief pipeline 111, be in charge of corresponding with burst disk 108 is also provided with control valve 109.
Control valve 109,110 is spring check valve, and control valve 109,110 conducting direction is oxidation reactor 101 to buffer container 106.
Also comprise chemoreceptor 104, the inductive probe of chemoreceptor 104 is arranged in oxidation reactor 101, and chemoreceptor 104 is connected with outside PLC.
In meltable cock body 105, through hole is conical screw hole.
Fusible alloy is made up of low-melting point metal alloy, at least two kinds in the preferred lead of low-melting point metal alloy, tin, cadmium.
Oxidation reactor 101 is heat sealing on seal receptacle 102, is provided with pressure limiting inductor in seal receptacle 102.
Auxiliary heat generating core 103 is also installed in oxidation reactor 101.
In the present invention, rupture disk 108 and meltable cock body 105 are arranged on oxidation reactor 101 wall, rupture disk 108 is connected with buffer container 106 respectively by relief pipeline 111 other end in parallel with meltable cock body 105, and relief pipeline 111 is provided with control valve 109,110.Rupture disk 108 is domed rupture disk, and when chemoreceptor 104 influence value exceedes critical value, rupture disk 108 is upspring, and carries extra pressure to relief pipeline 111.Meltable cock body 105 has bellmouth, and to load fusible alloy, fusible alloy is the alloy made with low-melting-point metal elements such as lead, tin and cadmiums.The fusing point of fusible alloy can be realized by the content of adjustment low-melting-point metal element according to causing the critical-temperature of temperature runaway.When the temperature in oxidation reactor 101 reaches critical-temperature, fusible alloy in meltable cock body 105 melts, and the space stayed after the pressure of oxidation reactor 101 is melted by fusible alloy in meltable cock body and the relief pipeline of connection are discharged in buffer container 106 and go; And when pressure reaches critical pressure, rupture disk 108 breaks, the space stayed after the pressure of oxidation reactor 101 is broken by rupture disk 108 and the relief pipeline of connection are discharged in buffer container 106 and go, negative-pressure gas is through condensation, be back to oxidation reactor 101 top, save oxidation reaction raw material.
Claims (8)
1. one kind is applied to the explosion-protection equipment of 6-caprolactone production technology, it is characterized in that: comprise buffer container, and be divided into two total-relief pipeline of separation structure, relief pipeline house steward pipe end is communicated to buffer container, relief pipeline two is in charge of pipe end and is communicated with respectively on the wall of 6-caprolactone production oxidation reactor gas phase portion, described buffer container passes through condensing reflux pipeline connection to oxidation reactor charging aperture leading portion, described oxidation reactor gas phase portion wall and one of them be in charge of in pipe end connectivity part meltable cock body be installed, have in meltable cock body to be communicated with in oxidation reactor and be in charge of interior through hole with corresponding, fusible alloy is filled with in through hole, oxidation reactor gas phase portion wall and another be in charge of in pipe end connectivity part rupture disk be installed.
2. a kind of explosion-protection equipment being applied to 6-caprolactone production technology according to claim 1, is characterized in that: the house steward in described relief pipeline is provided with control valve, and in relief pipeline, be in charge of corresponding with burst disk is also provided with control valve.
3. a kind of explosion-protection equipment being applied to 6-caprolactone production technology according to claim 2, is characterized in that: described control valve is spring check valve, control valve conducting direction is that oxidation reactor is to buffer container.
4. a kind of explosion-protection equipment being applied to 6-caprolactone production technology according to claim 1, is characterized in that: also comprise chemoreceptor, and the inductive probe of chemoreceptor is arranged in oxidation reactor, and chemoreceptor is connected with outside PLC.
5. a kind of explosion-protection equipment being applied to 6-caprolactone production technology according to claim 1, is characterized in that: in described meltable cock body, through hole is conical screw hole.
6. a kind of explosion-protection equipment being applied to 6-caprolactone production technology according to claim 1, is characterized in that: described fusible alloy is made up of low-melting point metal alloy, at least two kinds in the preferred lead of low-melting point metal alloy, tin, cadmium.
7. a kind of explosion-protection equipment being applied to 6-caprolactone production technology according to claim 1, is characterized in that: described oxidation reactor is heat sealing on seal receptacle, is provided with pressure limiting inductor in seal receptacle.
8. a kind of explosion-protection equipment being applied to 6-caprolactone production technology according to claim 1, is characterized in that: be also provided with auxiliary heat generating core in described oxidation reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484830.0A CN105107440A (en) | 2015-08-10 | 2015-08-10 | Explosion-proof equipment applied to epsilon-caprolactone production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484830.0A CN105107440A (en) | 2015-08-10 | 2015-08-10 | Explosion-proof equipment applied to epsilon-caprolactone production process |
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| CN105107440A true CN105107440A (en) | 2015-12-02 |
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|---|---|---|---|
| CN201510484830.0A Pending CN105107440A (en) | 2015-08-10 | 2015-08-10 | Explosion-proof equipment applied to epsilon-caprolactone production process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002187715A (en) * | 2000-12-15 | 2002-07-05 | Toshio Shimoda | Continuous production method for zeolite by contact reaction tube and rotary disk reactor system and continuous production apparatus |
| CN104289162A (en) * | 2014-09-25 | 2015-01-21 | 中国石油化工股份有限公司 | Temperature-sensing pressure-sensing anti-explosion device |
| CN204193889U (en) * | 2014-09-25 | 2015-03-11 | 中国石油化工股份有限公司 | Temperature-sensitive explosion-protection equipment |
| CN205095765U (en) * | 2015-08-10 | 2016-03-23 | 安徽红太阳新材料有限公司 | Be applied to explosion -proof equipment of epsilon - caprolactone production technology |
-
2015
- 2015-08-10 CN CN201510484830.0A patent/CN105107440A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002187715A (en) * | 2000-12-15 | 2002-07-05 | Toshio Shimoda | Continuous production method for zeolite by contact reaction tube and rotary disk reactor system and continuous production apparatus |
| CN104289162A (en) * | 2014-09-25 | 2015-01-21 | 中国石油化工股份有限公司 | Temperature-sensing pressure-sensing anti-explosion device |
| CN204193889U (en) * | 2014-09-25 | 2015-03-11 | 中国石油化工股份有限公司 | Temperature-sensitive explosion-protection equipment |
| CN205095765U (en) * | 2015-08-10 | 2016-03-23 | 安徽红太阳新材料有限公司 | Be applied to explosion -proof equipment of epsilon - caprolactone production technology |
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Application publication date: 20151202 |