CN107219256A - The appraisal procedure on oxidation reactor reaction temperature safety operation border - Google Patents
The appraisal procedure on oxidation reactor reaction temperature safety operation border Download PDFInfo
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- CN107219256A CN107219256A CN201610165005.9A CN201610165005A CN107219256A CN 107219256 A CN107219256 A CN 107219256A CN 201610165005 A CN201610165005 A CN 201610165005A CN 107219256 A CN107219256 A CN 107219256A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
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Abstract
The present invention relates to a kind of appraisal procedure on oxidation reactor reaction temperature safety operation border, mainly solving in the prior art can not effective detection oxidation reactor the problem of fire danger.The present invention is by using a kind of appraisal procedure on oxidation reactor reaction temperature safety operation border, including mixing oxygen device, reactor and vavuum pump with temperature control, oxygen pipeline, fuel gas pipeline is connected with mixed oxygen device respectively, back-fire relief explosion-proof filler is housed in mixed oxygen device, mixed oxygen device outlet is divided into two-way, the first via is connected with metering pump intake, second tunnel is connected with the reactor outlet with temperature control, metering pump discharge is connected with the reactor inlet with temperature control, reactor with temperature control is provided with safety valve, rupture disk and at least one thermocouple, thermocouple is connected with computer, the technical scheme that vavuum pump is connected with the reactor outlet with temperature control preferably solves above mentioned problem, in assessment available for oxidation reactor reaction temperature safety operation border.
Description
Technical field
The present invention relates to a kind of appraisal procedure on oxidation reactor reaction temperature safety operation border.
Background technology
Oxidation reaction is a kind of reaction of heat release hazardous chemical, when fuel gas and oxygen in oxidator in course of reaction if control
Bad temperature of reactor, residence time of material, oxygen concentration and initial pressure are made, then is likely to occur complete oxidation (i.e.
Burning), cause reactor temperature runaway, and then occur combustion explosion accident.
CN201510185390.9 is related to a kind of measure device of gas phase explosive characteristic in course of reaction, including reactor, point
Duration and degree of heating, temperature and pressure sensor, feed system, temperature and pressure acquisition system, Iganition control system and outer circulation take heat
System.
Existing detection means can not meet duty requirements, and the design of oxidation reactor key parameter can only pass through simulation meanses and heat
Mechanics Calculation estimates that, due to being related to " transport " four kinds of changes in oxidation reactor, existing simulation meanses will be unable to
It is accurately obtained key parameter.
The present invention targetedly solves the problem.
The content of the invention
The technical problems to be solved by the invention be in the prior art can not effective detection oxidation reactor the problem of fire danger,
A kind of appraisal procedure on new oxidation reactor reaction temperature safety operation border is provided.This method is reacted for oxidation reactor
In the assessment of temperature safety operational boundaries, have the advantages that danger can be fired with effective detection oxidation reactor and data are provided.
To solve the above problems, the technical solution adopted by the present invention is as follows：A kind of oxidation reactor reaction temperature safety operation side
The appraisal procedure on boundary, carries out the assessment of reaction temperature, oxygen and fuel gas are in mixed oxygen device on oxidation reactor apparatus for evaluating
In be well mixed after, enter the reactor with temperature control through measuring pump, thermocouple be installed on reactor, thermocouple believes temperature
Number computer is transferred to, computer expert's excess temperature situation of change judges whether mixed combustible gas body is burnt, once gas occurs
Combustion explosion, then safety valve or rupture disk will open, it is outdoor that tail gas passes through tail gas discharging pipe discharge；If do not fired,
Then mixed combustible gas body will be back to metering pump intake, if mixed combustible gas body pressure is not up to predetermined pressure, mixing can
Combustion gas, which is known from experience, to be continued to inject measuring pump, and by repeatedly circulating until firing, record mixed combustible gas body is when firing
Various states, obtain the safety critical parameter of oxidation reaction；The oxidation reactor apparatus for evaluating includes mixed oxygen device, band temperature
The reactor and vavuum pump of control, oxygen pipeline, fuel gas pipeline are connected with mixed oxygen device respectively, mix anti-equipped with back-fire relief in oxygen device
Quick-fried filler, mixed oxygen device outlet is divided into two-way, and the first via is connected with metering pump intake, the second tunnel and the reactor outlet with temperature control
Be connected, metering pump discharge be connected with the reactor inlet with temperature control, the reactor with temperature control be provided with safety valve, rupture disk and
At least one thermocouple, thermocouple is connected with computer, and vavuum pump is connected with the reactor outlet with temperature control.
In above-mentioned technical proposal, it is preferable that the mixed oxygen device outlet is divided into two-way after counterbalance valve and check valve, the first via with
Measure pump intake to be connected, the second tunnel is connected after check valve with the reactor outlet with temperature control.
In above-mentioned technical proposal, it is preferable that the safety valve, rupture disk outlet are connected with exhaust emissions pipeline.
In above-mentioned technical proposal, it is preferable that the pipeline that the vavuum pump is connected with the reactor with temperature control is provided with valve.
In above-mentioned technical proposal, it is preferable that the back-fire relief explosion-proof filler is the nonmetallic organic material of porous ball-type.
In above-mentioned technical proposal, it is highly preferred that the nonmetallic organic material polyurethane foam sponge of the porous ball-type, polyether-type
Porous ball.
This patent present in oxidation reaction reactor for firing danger, by testing different material residence time, oxygen
The condition such as concentration and initial pressure investigates the margin of safety of temperature of reactor, for oxidation reaction formulate reaction condition provide according to
According to achieving preferable technique effect.
Brief description of the drawings
Fig. 1 is the structural representation of device of the present invention.
In Fig. 1,1 oxygen pipeline；2 fuel gas pipelines；3 back-fire relief explosion-proof fillers；4 mixed oxygen devices；5a counterbalance valves；5b
Valve；6a/b check valves；7a measuring pumps；7b vavuum pumps；8 computers；9 reactors with temperature control；10 thermocouples；11
Safety valve；12 rupture disks；13 tail gas discharging pipes.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Embodiment
【Embodiment 1】
A kind of appraisal procedure on oxidation reactor reaction temperature safety operation border, is carried out anti-on oxidation reactor apparatus for evaluating
The assessment of temperature safety operational boundaries is answered, as shown in figure 1, oxidation reactor apparatus for evaluating includes mixed oxygen device, with the anti-of temperature control
Device and vavuum pump are answered, oxygen pipeline, fuel gas pipeline are connected with mixed oxygen device respectively, mix and back-fire relief explosion-proof filler is housed in oxygen device,
The nonmetallic organic material of the porous ball-type of back-fire relief explosion-proof filler.Mixed oxygen device outlet is divided into two-way, and the first via is connected with metering pump intake,
Second tunnel is connected with the reactor outlet with temperature control, and metering pump discharge is connected with the reactor inlet with temperature control, with the anti-of temperature control
Device is answered to be provided with safety valve, rupture disk and thermocouple, thermocouple is connected with computer, vavuum pump and the reactor outlet with temperature control
It is connected.
After oxygen and fuel gas are well mixed in mixed oxygen device, by entering measuring pump, meter after counterbalance valve 6a and check valve
Amount pump by mixed gas pour it is evenly spaced on the reactor with temperature control, reactor thermocouple is installed, thermocouple is a total of
6, temperature signal is transferred to computer by thermocouple, and computer expert's excess temperature situation of change judges whether mixed combustible gas body occurs
Burning, once gas there occurs combustion explosion, then safety valve or rupture disk will be acted, and tail gas is discharged by tail gas discharging pipe
It is outdoor；If do not fired, mixed combustible gas body will be returned in measuring pump by check valve 6b and play circulation, if mixed
Close fuel gas pressure and be not up to predetermined pressure, then mixed combustible gas is known from experience continues to inject measuring pump by counterbalance valve, by many
After secondary circulation is until fire, various states of the record mixed combustible gas body when firing obtain the peace of oxidation reaction
Full critical parameters.
In addition, needing unlatching vavuum pump to vacuumize system before device sample introduction, the pipeline that vavuum pump is connected with reactor is provided with
Valve.
By taking ethylene moiety oxidation epoxy ethane reactor as an example.
Fixed ethylene concentration, residence time of material and initial pressure, investigate the safety operation border of reaction temperature.
Operating method：
1. open vavuum pump and valve 5b is vacuumized to system；
2. ethene and oxygen are passed through in proportion；
3. by back pressure valve regulation to goal pressure；
4. reactor is set to reaction temperature；
5. measuring pump is adjusted to desired flow；
6. recording temperature rise situation of change after dozen circulation, as do not fired, tail gas is discharged, purging system, by reactor temperature
Repeat step 1-6 after degree rise, until firing；
7. record the reaction temperature fired.
By industrialization amplification, reference frame can be provided for the design of industrial oxidation reactor.
【Embodiment 2】
According to the condition and step described in embodiment 1, simply a total of 2 of thermocouple, back-fire relief explosion-proof filler is polyurethane foam
Foam sponge, danger can be fired with effective detection oxidation reactor and design data is provided.
【Embodiment 3】
According to the condition and step described in embodiment 1, simply a total of 8 of thermocouple, back-fire relief explosion-proof filler is that polyether-type is more
Hole ball, danger can be fired with effective detection oxidation reactor and design data is provided.
Claims (7)
1. a kind of appraisal procedure on oxidation reactor reaction temperature safety operation border, is carried out anti-on oxidation reactor apparatus for evaluating
Answer the assessment of temperature safety operational boundaries, after oxygen and fuel gas are well mixed in mixed oxygen device, enter band temperature through measuring pump
Thermocouple is installed, temperature signal is transferred to computer, the change of computer expert's excess temperature by thermocouple on the reactor of control, reactor
Situation judges whether mixed combustible gas body is burnt, once gas there occurs combustion explosion, then safety valve or rupture disk will
Open, tail gas is discharged outdoor by tail gas discharging pipe；If do not fired, mixed combustible gas body will be back to measuring pump
Entrance, if mixed combustible gas body pressure is not up to predetermined pressure, mixed combustible gas, which is known from experience, to be continued to inject measuring pump, is passed through
Repeatedly circulation is until fire, the reaction temperature that record is fired；The oxidation reactor apparatus for evaluating include mixed oxygen device,
Reactor and vavuum pump with temperature control, oxygen pipeline, fuel gas pipeline are connected with mixed oxygen device respectively, are mixed in oxygen device equipped with resistance
Fiery explosion-proof filler, mixed oxygen device outlet is divided into two-way, and the first via is connected with metering pump intake, the second tunnel and the reactor with temperature control
Outlet is connected, and metering pump discharge is connected with the reactor inlet with temperature control, and the reactor with temperature control is provided with safety valve, explosion
Piece and at least one thermocouple, thermocouple are connected with computer, and vavuum pump is connected with the reactor outlet with temperature control.
2. the appraisal procedure on oxidation reactor reaction temperature safety operation border according to claim 1, it is characterised in that described
Mixed oxygen device outlet is divided into two-way after counterbalance valve and check valve, and the first via is connected with metering pump intake, and the second tunnel is after check valve
It is connected with the reactor outlet with temperature control.
3. the appraisal procedure on oxidation reactor reaction temperature safety operation border according to claim 1, it is characterised in that described
Safety valve, rupture disk outlet are connected with exhaust emissions pipeline.
4. the appraisal procedure on oxidation reactor reaction temperature safety operation border according to claim 1, it is characterised in that described
The pipeline that vavuum pump is connected with the reactor with temperature control is provided with valve.
5. the appraisal procedure on oxidation reactor reaction temperature safety operation border according to claim 1, it is characterised in that described
Thermocouple is along the reactor axis with temperature control to being evenly arranged.
6. the appraisal procedure on oxidation reactor reaction temperature safety operation border according to claim 1, it is characterised in that described
Back-fire relief explosion-proof filler is the nonmetallic organic material of porous ball-type.
7. the appraisal procedure on oxidation reactor reaction temperature safety operation border according to claim 6, it is characterised in that described
The porous nonmetallic organic material polyurethane foam sponge of ball-type, polyether-type porous ball.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610165005.9A CN107219256B (en) | 2016-03-22 | 2016-03-22 | Method for evaluating safe operation boundary of reaction temperature of oxidation reactor |
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| CN201610165005.9A CN107219256B (en) | 2016-03-22 | 2016-03-22 | Method for evaluating safe operation boundary of reaction temperature of oxidation reactor |
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| CN107219256B CN107219256B (en) | 2022-01-04 |
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| CN107219256B (en) | 2022-01-04 |
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Effective date of registration: 20211220 Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: Sinopec Safety Engineering Research Institute Co., Ltd Address before: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Applicant before: CHINA PETROLEUM & CHEMICAL Corp. Applicant before: Qingdao Safety Engineering Research Institute of Sinopec |
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