CN104492345B - A kind of drawing mechanism for catalytic hydrogenation and discharging technology - Google Patents
A kind of drawing mechanism for catalytic hydrogenation and discharging technology Download PDFInfo
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- CN104492345B CN104492345B CN201410717271.9A CN201410717271A CN104492345B CN 104492345 B CN104492345 B CN 104492345B CN 201410717271 A CN201410717271 A CN 201410717271A CN 104492345 B CN104492345 B CN 104492345B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of drawing mechanism for catalytic hydrogenation and discharging technology, this drawing mechanism includes reactor, a settling tank and the discharging pipeline connecting reactor and a settling tank, one end that discharging pipeline connects with reactor is the top discharge pipe and bottom discharge pipe being set up in parallel, distance bottom the import of top discharge pipe and reactor is 10～50cm, and the pipeline of top discharge pipe is provided with top discharge valve；The import of bottom discharge pipe is near the bottom of reactor, and the pipeline of bottom discharge pipe is provided with bottom discharge valve；Reactor is provided with radar level gauge, and discharging pipeline is provided with densimeter, radar level gauge and densimeter and sends the signal closing valve according to testing result upwards outlet valve or bottom discharge valve.When using this drawing mechanism to carry out discharging, it is possible to realize the Automatic continuous discharging of catalytic hydrogenation liquid, the effective response rate improving catalyst, and the discharge that hydrogen is unnecessary can be reduced.
Description
Technical field
The invention belongs to hydrogenation technical field, particularly relate to a kind of going out for catalytic hydrogenation
Material device and discharging technology.
Background technology
Catalytic hydrogenation refers to that hydrogen molecule adds to the insatiable hunger of organic compound under the effect of catalyst
With the reaction on group.The key of catalytic hydrogenation is exactly catalyst, and wherein Raney nickel is applied
Extensively, there are all kinds such as Raney's nickel, nickel borides.Noble metal platinum, palladium and rhodium are the most conventional, this
A little catalyst prices the most costly, in industrialization catalytic hydrogenation, all can manage to carry out it
Recycle.
Catalytic hydrogenation is typically all carried out under conditions of high temperature and high pressure, the most effectively utilizes anti-
Answer the heat energy in material and reduce the discharge capacity of hydrogen, ERMization comprehensive utilization is also had far-reaching
Meaning.
After existing catalytic hydrogenation is carried out completely, it is all directly reactant liquor to be squeezed into settling tank to enter
Row sedimentation, then by filtering catalyst removing, catalyst can not recycle easily,
And inefficient operation, and the unit consumption of hydrogen is bigger.
Summary of the invention
The invention provides a kind of drawing mechanism for catalytic hydrogenation and discharging technology, using should
Drawing mechanism is capable of the Automatic continuous discharging of catalytic hydrogenation liquid, effective raising catalyst
The response rate, and the discharge that hydrogen is unnecessary can be reduced.
A kind of drawing mechanism for catalytic hydrogenation, including reactor, settling tank with connect
The discharging pipeline of reactor and a settling tank, one end that described discharging pipeline connects with reactor is
The top discharge pipe being set up in parallel and bottom discharge pipe；
Distance bottom the import of described top discharge pipe and reactor is 10～50cm, described top discharge
Pipe is provided with top discharge valve；
The import of described bottom discharge pipe is near the bottom of reactor, and described bottom discharge pipe is provided with down
Outlet valve；
Described reactor is provided with radar level gauge, and described discharging pipeline is provided with densimeter, institute
State radar level gauge and densimeter to send out to described top discharge valve or bottom discharge valve according to testing result
Go out to close the signal of valve.
In the present invention, drawing mechanism contains two discharging pipelines, can be according to catalyst activity during discharging
Difference and use different discharging technology, go out from top discharge pipe when catalyst activity is higher
Material, it is possible to reduce catalyst enters settling tank with material；When catalyst activity is relatively low, under
Discharging pipeline discharging, directly derives catalyst together with material.During discharging, pass through radar
Liquidometer and densimeter control striking point, can be effectively reduced the unit consumption of hydrogen.
As preferably, the sidewall of a described settling tank is provided with top discharge mouth and lower discharge port, described
The distance from bottom of top discharge mouth and described settling tank be 30～60cm；Described lower discharge port
It is 10～30cm with the distance of the bottom of a described settling tank；
The bottom of a described settling tank is provided with catalyst discharging opening.
Wherein, when using top discharge pipe discharging, the catalytic amount being mingled with is few, from a settling tank
Discharge hole for discharge；When using bottom discharge pipe discharging, the catalytic amount being mingled with is many, needs from one
The top discharge mouth discharging of secondary settling tank.
As preferably, described discharge nozzle curb and is once sunk described in being tangentially communicated to an of settling tank
The inside of fall tank.
As preferably, described discharging pipeline and the connection position of a settling tank are in a settling tank
Middle part in short transverse
As preferably, described discharging pipeline is provided with heat transmission equipment.Can be by relatively by heat transmission equipment
The reactant liquor of high-temperature cools down and by heat recovery and utilization, and this heat transmission equipment uses heat exchange coil.
Present invention also offers a kind of discharging technology using described drawing mechanism, including walking as follows
Rapid:
(1) after catalytic hydrogenation completes, detect the activity of catalyst and determine whether catalysis
Agent is reused；
(2) in step (1), however, it is determined that need catalyst to be reused, then by reactant liquor
Standing sedimentation 30～60min, is then turned on top discharge valve, makes reactant liquor carry out even through top discharge pipe
Continuous discharging, enters in a settling tank；
(3) material that settling tank in step (2) is collected is settled 1-8 hour, then open once
The lower discharge port of settling tank, discharging to subsequent sedimentation tank or product collecting tank；
(4) in step (1), however, it is determined that need not catalyst is reused, the most directly open
Open bottom discharge valve, make reactant liquor carry out continuous discharge through bottom discharge pipe, enter in a settling tank；
(5) material that settling tank in step (4) is collected is settled 1-8 hour, then open once
The top discharge mouth of settling tank, discharging to subsequent sedimentation tank or product collecting tank；
(6) after the hydrogenated products discharging of step (3) or step (5), open once
The catalyst discharging opening collection catalyst of settling tank.
As preferably, during the continuous discharge of step (2), meet following either condition time institute
The top discharge valve stated cuts out, and terminates discharging process；
Condition one, described radar level gauge gathers the liquid level in reactor, and described liquid level
Height reduction is to predetermined value；
Condition two, the described material density in densimeter signal piping, when the change value of material density
Beyond predetermined value.
When using bottom discharge pipe discharging, directly liquid material and catalyst are all squeezed into and once settle
Tank, therefore, there is no need to be controlled liquid level, as preferably, and continuous in step (4)
During discharging, the described material density in densimeter signal piping, when the change value of material density
During beyond predetermined value, sending shutdown signal to described top discharge valve, described top discharge valve cuts out,
Terminate discharging process；When the change value of material density is without departing from predetermined value, do not operate.
As preferably, during the continuous discharge of step (2) or step (4), heat exchange is used to set
For material is carried out heat exchange.
As preferably, during the continuous discharge of step (2) or step (4), material is along one
The tangential of secondary settling tank enters a described settling tank.
Compared with the existing technology, drawing mechanism and the discharging technology of the present invention can effectively improve catalysis
The response rate of agent, reduces the damaged degree of catalyst, sufficiently make use of the heat energy in reaction mass simultaneously
The discharge unnecessary with reducing hydrogen, technological design is reasonable, and safety is high.
Accompanying drawing explanation
Fig. 1 is structure and the process chart of patent of the present invention；
Fig. 2 is the schematic diagram that material enters a settling tank；In figure, 1: reactor, 2: heat exchanger,
3: settling tanks, 4: heat exchange coil, 5: top discharge pipe, 6: bottom discharge pipe, 7: once sink
Fall tank top discharge mouth, 8: settling tank lower discharge ports, 9: settling tank catalyst discharging openings,
10: radar level gauge, 11: densimeter, 12: reactor discharging pneumatic operated valve, 13: reactor empties
Pipe, 14: settling tank evacuated tube 15: reactor discharging pipeline.
Detailed description of the invention
The drawing mechanism of the present invention is as it is shown in figure 1, this drawing mechanism comprises the most successively for hydrogen
Change the reactor 1 of reaction, discharging pipeline and a settling tank 3 for discharging.
Wherein, discharging pipeline 15 is followed successively by feed zone, interlude and discharging section from left to right, and instead
The one end answering still to connect is feed zone, is made up of top discharge pipe 5 in parallel and bottom discharge pipe 6, above goes out
One end of material pipe 5 and bottom discharge pipe 6 is stretched into inside reactor, after other end crosses, with discharge nozzle
The interlude on road 15 is connected；The interlude of discharging pipeline 15 is provided with densimeter 11 and heat exchanger 2,
The part that the interlude of discharging pipeline 15 contacts with heat exchanger forms heat exchange coil 4；Discharging pipeline 15
Discharging section along the inside being tangentially communicated to a described settling tank of a settling tank.
One time settling tank 3 is made up of, obconic top and the obconic bottom of cylinder type
Bottommost is provided with catalyst discharging opening 9, is provided with top discharge mouth 7 and bottom discharge at obconic sidewall
Mouth 8, both are spaced a distance.
Reactor is provided with radar level gauge 10, top discharge pipe 5 and bottom discharge pipe 6 are provided with out
Material pneumatic operated valve 12, respectively as top discharge valve and bottom discharge valve.During discharging, discharging pneumatic operated valve
12 manually open, and can be carried out certainly by the control of radar level gauge 10 and densimeter 11
Dynamic Guan Bi.
Reactor is provided with various feed pipe and reactor evacuated tube 13, a settling tank has
Once settling tank evacuated tube 15, this part can select according to the needs of concrete reaction.
Upper and lower two kinds of discharge methods are set in a kettle., based on top discharge in ordinary operation, under
Discharging only the most in a kettle. catalyst activity substantially reduce, stop or other needs catalyst all to discharge
In the case of, just can use.
Wherein the concrete operation method of top discharge is as follows:
(1) after catalytic hydrogenation terminates, the stirring of stopped reaction still, allow the catalysis in reactor
Agent sedimentation 30-60min, makes reactor interior in addition to a small amount of catalyst suspended, and major part all settles down.
After sedimentation terminates, opening the top discharge valve of reactor, perform top discharge program, material is in the mistake discharged
Cheng Zhong, the cooling water in coil pipe and the cooler of subcooler carries out heat exchange, the material after heat exchange with
The mode of sidespin enters a settling tank.
Top discharge mouth is arranged on the middle and lower part of reactor, and near the top of catalyst layer, general distance is anti-
Answer the position of the bottom 10-50cm of still, use the purpose of top discharge, mainly prevent catalyst from going out
By too much discharge during material, reduce friction between catalyst and discharging pipeline simultaneously and cause catalyst
Broken, improve the response rate of catalyst.Be computed use top discharge catalyst the response rate up to
More than 95%, and the response rate of bottom discharge catalyst can only achieve more than 80%.
Cooling water in cooler is warmed up to 45-60 DEG C by 5-30 DEG C, after discharge for material dissolution or
Other purposes.
After material in reactor is discharged, in the way of sidespin, enter a settling tank, the mode of sidespin
The material impulsive force to a settling tank inwall can be alleviated, it is also possible to avoid catalyst because of clash into, and
Occur substantial amounts of broken.
(2) during discharging, the liquid level in reactor constantly reduces, by reactor top
In radar level gauge sensitive and reactive still, the change of liquid level, after liquid level drops to a certain degree, is typically arranged
Liquid level is 10-50cm scope, and signal is conveyed to outlet valve by radar level gauge, and outlet valve performs
Bolt down procedure, reactor discharging terminates.If radar level gauge is out of control during discharging, reactor
In material may proceed to discharge, when liquid level drops at top discharge mouth, and the hydrogen in reactor is discharged,
Densimeter on discharging pipeline can determine the drastically change of material density, thus passed on by signal and be given
Material valve, outlet valve performs bolt down procedure, and reactor discharging terminates.
Design radar level gauge and the whole striking point of densimeter two ore control, prevent in discharging process,
Hydrogen too much in reactor is discharged, and stops the waste of resource.Use this control technology, hydrogen
Discharge capacity can control below 5.0%, and the unit consumption of hydrogen substantially reduces, and is effectively guaranteed whole
The safety of individual discharging process.
(3), after material enters a settling tank, settle 1-8 hour, be then turned on a settling tank
On bottom discharge valve, start once settle discharging pump, material is squeezed into secondary settlement tank.Open simultaneously
Nitrogen feed valve, pours nitrogen in a settling tank, completely cuts off catalyst and air contact with nitrogen
Chance, prevent catalyst Oxidative inactivation.With Liquid level on settling tank, material is waited to beat
After, chain by liquid level, it is automatically stopped and once settles discharging pump.It is then turned on catalyst outlet valve,
Start catalyst membrane pump, catalyst is squeezed into catalyst wash tank.
At follow-up catalyst sedimentation tank, catalyst wash groove and catalyst metering groove, all use nitrogen
The mode of pressurize, stops catalyst and contacts with the direct of air, prevent catalyst Oxidative inactivation, thus
Improve the response rate of catalyst.
Wherein the operational approach of bottom discharge is as follows:
(1) after catalytic hydrogenation terminates, the stirring of stopped reaction still, directly open reactor
Bottom discharge valve, performs bottom discharge program, and during discharging, material is through the coil pipe of subcooler and cooling
Cooling water in device carries out heat exchange, and the material after heat exchange enters a settling tank in the way of sidespin.
Lower discharge port is arranged on the bottom of reactor, it is ensured that catalyst and material can be all from reactors
In be discharged.
Bottom discharge process, radar level gauge discord discharge valve is chain, only judges discharging by densimeter
The shut-in time of valve.
(2) during discharging, when the solution in reactor and catalyst the most drained after, hydrogen
Being discharged subsequently, during densimeter perception discharging, the great variety of density, conveys to signal rapidly
Outlet valve, after outlet valve accepts signal, is immediately performed bolt down procedure, and reactor discharging terminates.
(3), after material enters a settling tank, settle 1-8 hour, be then turned on a settling tank
On top discharge valve, start once settle discharging pump, material is squeezed into secondary settlement tank.Open simultaneously
Nitrogen feed valve, pours nitrogen in a settling tank, completely cuts off catalyst and air contact with nitrogen
Chance, prevent catalyst Oxidative inactivation.With Liquid level on settling tank, material is waited to beat
After, chain by liquid level, it is automatically stopped and once settles discharging pump.It is then turned on catalyst outlet valve,
Start catalyst membrane pump, catalyst is squeezed into catalyst wash tank.
Upper and lower discharging opening is set in a settling tank, corresponds respectively to the upper and lower discharging of reactor
Form, when wherein reactor uses top discharge, after entering a settling tank sedimentation, goes out under corresponding employing
Material mouth discharging；When reactor uses bottom discharge, after entering a settling tank sedimentation, corresponding employing goes out
Material mouth discharging.This design, can reasonably distribute the output of material and catalyst, it is to avoid too much
Catalyst is transported to secondary settlement tank, affects the effect of secondary settlement, or too much material is defeated
Deliver to catalyst wash tank, cause the wasting phenomenon of material.
Below in conjunction with specific embodiment, the present invention will be further described:
Embodiment 1: the discharging technology of sorbitol catalytic hydrogenation
(1) after sorbitol catalytic hydrogenation terminates, the stirring of stopped reaction still, allow in reactor
Material and catalyst (Raney's nickel, specification is: below 200 mesh, nickel content >=92.8%) sedimentation
30min, after sedimentation terminates, opens the top discharge valve of reactor, carries out top discharge, during discharging,
Material carries out heat exchange through the coil pipe of subcooler with the cooling water in cooler, and the material after heat exchange is with side
The mode of rotation enters a settling tank.
Cooling water after heat exchange is warmed up to 50 DEG C by 25 DEG C, water-delivery pump be transported to dissolving tank, be used for
The dissolving of glucose.
(2) during discharging, the liquid level in reactor constantly reduces, by reactor top
The change of liquid level in radar level gauge sensitive and reactive still, bottom liquid level distance reactor, 30cm is high
During degree (this is highly substantially equal to catalyst sedimentation height), signal is conveyed to discharging by radar level gauge
Valve, outlet valve performs bolt down procedure, and reactor discharging terminates.
(3) Sorbitol solution settles 2 hours in a settling tank, is then turned on a settling tank
Top discharge valve, start once settle discharging pump, material is squeezed into secondary settlement tank.Open nitrogen simultaneously
Gas inlet valve, pours nitrogen in a settling tank, makes a settling tank be in pressure-fired (0.05mp)
State.It is with Liquid level on settling tank, after waiting material to beat, chain by liquid level,
It is automatically stopped and once settles discharging pump.It is then turned on catalyst outlet valve, starts catalyst membrane pump,
Catalyst is squeezed into catalyst wash tank.
Verified calculating, sorbitol catalytic hydrogenation uses this discharge method, and the response rate of catalyst is
95.5%, the discharge capacity of hydrogen is below 4.5%.
Embodiment 2: the discharging technology of xylitol catalytic hydrogenation
(1) after xylitol catalytic hydrogenation terminates, the stirring of stopped reaction still, allow in reactor
Material and catalyst (Raney's nickel, specification is: below 200 mesh, nickel content >=92.8%) sedimentation
40min, after sedimentation terminates, opens the top discharge valve of reactor, carries out top discharge, during discharging,
Material carries out heat exchange through the coil pipe of subcooler with the cooling water in cooler, and the material after heat exchange is with side
The mode of rotation enters a settling tank.
Cooling water after heat exchange is warmed up to 55 DEG C by 25 DEG C, then with being pumped into dissolving tank, is used for
The dissolving of xylose.
(2) during discharging, the liquid level in reactor constantly reduces, by reactor top
The change of liquid level in radar level gauge sensitive and reactive still, bottom liquid level distance reactor, 25cm is high
During degree (this is highly substantially equal to catalyst sedimentation height), signal is conveyed to discharging by radar level gauge
Valve, outlet valve performs bolt down procedure, and reactor discharging terminates.
Xylitol liquid settles 3 hours in a settling tank, is then turned on a settling tank going out
Material valve, starts and once settles discharging pump, material is squeezed into secondary settlement tank.Open nitrogen feed simultaneously
Valve, pours nitrogen in a settling tank, makes settling tank be in the shape of pressure-fired (0.05mp)
State.With Liquid level on settling tank, after waiting material to beat, chain by liquid level, automatically
Stop once settling discharging pump.It is then turned on catalyst outlet valve, starts catalyst membrane pump, will urge
Agent squeezes into catalyst wash tank.
Verified calculating, xylitol catalytic hydrogenation uses this discharge method, and the response rate of catalyst is
96.5%, the discharge capacity of hydrogen is below 4.5%.
Embodiment 3: the discharging technology of maltose alcohol catalytic hydrogenation
(1) after maltol catalytic hydrogenation terminates, the stirring of stopped reaction still, allow in reactor
Material and catalyst (Raney's nickel, specification is: below 200 mesh, nickel content >=92.8%) sedimentation
45min, after sedimentation terminates, opens the top discharge valve of reactor, carries out top discharge, during discharging,
Material carries out heat exchange through the coil pipe of subcooler with the cooling water in cooler, and the material after heat exchange is with side
The mode of rotation enters a settling tank.
Cooling water after heat exchange is warmed up to 50 DEG C by 20 DEG C, then with being pumped into dissolving tank, is used for
The dissolving of maltose.
(2) during discharging, the liquid level in reactor constantly reduces, by reactor top
The change of liquid level in radar level gauge sensitive and reactive still, bottom liquid level distance reactor, 25cm is high
During degree (this is highly substantially equal to catalyst sedimentation height), signal is conveyed to discharging by radar level gauge
Valve, outlet valve performs bolt down procedure, and reactor discharging terminates.
(3) maltol liquid settles 2.5 hours in a settling tank, is then turned on a settling tank
Top discharge valve, start once settle discharging pump, material is squeezed into secondary settlement tank.Open nitrogen simultaneously
Gas inlet valve, pours nitrogen in a settling tank, makes a settling tank be in pressure-fired (0.05mp)
State.It is with Liquid level on settling tank, after waiting material to beat, chain by liquid level,
It is automatically stopped and once settles discharging pump.It is then turned on catalyst outlet valve, starts catalyst membrane pump,
Catalyst is squeezed into catalyst wash tank.
Verified calculating, maltose alcohol catalytic hydrogenation uses this discharge method, and the response rate of catalyst is
96.0%, the discharge capacity of hydrogen is below 4.5%.
Claims (9)
1. for the drawing mechanism of catalytic hydrogenation, including reactor, a settling tank and
Connection reactor and the discharging pipeline of a settling tank, it is characterised in that described discharging pipeline is with anti-
The one end answering still to connect is the top discharge pipe and bottom discharge pipe being set up in parallel；
Distance bottom the import of described top discharge pipe and reactor is 10～50cm, described top discharge
Pipe is provided with top discharge valve；
The import of described bottom discharge pipe is near the bottom of reactor, and described bottom discharge pipe is provided with down
Outlet valve；
Described reactor is provided with radar level gauge, and described discharging pipeline is provided with densimeter, institute
State radar level gauge and densimeter to send out to described top discharge valve or bottom discharge valve according to testing result
Go out to close the signal of valve.
Drawing mechanism for catalytic hydrogenation the most according to claim 1, its feature exists
In, the sidewall of a described settling tank is provided with top discharge mouth and lower discharge port, described top discharge mouth
It is 30～60cm with the distance from bottom of a described settling tank；Described lower discharge port and described one
The distance of the bottom of secondary settling tank is 10～30cm；
The bottom of a described settling tank is provided with catalyst discharging opening.
Drawing mechanism for catalytic hydrogenation the most according to claim 1 and 2, it is special
Levying and be, what described discharge nozzle curb a settling tank is tangentially communicated to a described settling tank
Internal.
Drawing mechanism for catalytic hydrogenation the most according to claim 3, its feature exists
In, described discharging pipeline and the connection position of a settling tank are in a settling tank short transverse
Middle part.
Drawing mechanism for catalytic hydrogenation the most according to claim 1 and 2, it is special
Levying and be, described discharging pipeline is provided with heat transmission equipment.
6. using a discharging technology for drawing mechanism described in any one of claim 2～5, it is special
Levy and be, comprise the steps:
(1) after catalytic hydrogenation completes, detect the activity of catalyst and determine whether catalysis
Agent is reused；
(2) in step (1), however, it is determined that need catalyst to be reused, then by reactant liquor
Standing sedimentation 30～60min, is then turned on top discharge valve, makes reactant liquor carry out even through top discharge pipe
Continuous discharging, enters in a settling tank；
(3) material that settling tank in step (2) is collected is settled 1-8 hour, then open once
The lower discharge port of settling tank, discharging to subsequent sedimentation tank or product collecting tank；
(4) in step (1), however, it is determined that need not catalyst is reused, the most directly open
Open bottom discharge valve, make reactant liquor carry out continuous discharge through bottom discharge pipe, enter in a settling tank；
(5) material that settling tank in step (4) is collected is settled 1-8 hour, then open once
The top discharge mouth of settling tank, discharging to subsequent sedimentation tank or product collecting tank；
(6) after the hydrogenated products discharging of step (3) or step (5), open once
The catalyst discharging opening collection catalyst of settling tank.
Discharging technology the most according to claim 6, it is characterised in that in the company of step (2)
During continuous discharging, the top discharge valve described in when meeting following either condition cuts out, and terminates discharging process；
Condition one, described radar level gauge gathers the liquid level in reactor, and described liquid level
Height reduction is to predetermined value；
Condition two, the described material density in densimeter signal piping, when the change value of material density
Beyond predetermined value.
Discharging technology the most according to claim 6, it is characterised in that in the company of step (4)
During continuous discharging, the described material density in densimeter signal piping, when the change of material density
When value is beyond predetermined value, sending shutdown signal to described bottom discharge valve, described bottom discharge valve cuts out,
Terminate discharging process.
Discharging technology the most according to claim 6, it is characterised in that step (2) or step
Suddenly, during the continuous discharge of (4), use heat transmission equipment that material carries out heat exchange of lowering the temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410717271.9A CN104492345B (en) | 2014-12-01 | 2014-12-01 | A kind of drawing mechanism for catalytic hydrogenation and discharging technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410717271.9A CN104492345B (en) | 2014-12-01 | 2014-12-01 | A kind of drawing mechanism for catalytic hydrogenation and discharging technology |
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| CN104492345B true CN104492345B (en) | 2016-08-24 |
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| CN106512864A (en) * | 2016-12-29 | 2017-03-22 | 杭州油脂化工有限公司 | Intermittent hydrogenation safety discharging device and safety discharging method |
| CN112882168A (en) * | 2021-01-28 | 2021-06-01 | 通鼎互联信息股份有限公司 | Oil supply system for filling ointment of central reinforcement of high-reliability optical cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11286457A (en) * | 1997-12-26 | 1999-10-19 | Koei Chem Co Ltd | Continuous catalytic reduction of organic compound |
| CN101851150A (en) * | 2010-03-30 | 2010-10-06 | 山东福田药业有限公司 | Novel sugar alcohol hydrogenation technology |
| CN203437105U (en) * | 2013-08-27 | 2014-02-19 | 山东道可化学有限公司 | Gas backflushing type alkali liquor reaction device |
| CN203778037U (en) * | 2014-03-06 | 2014-08-20 | 江苏格罗瑞化学有限公司 | Compression and discharge device of triazinone oxidation reaction kettle |
-
2014
- 2014-12-01 CN CN201410717271.9A patent/CN104492345B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11286457A (en) * | 1997-12-26 | 1999-10-19 | Koei Chem Co Ltd | Continuous catalytic reduction of organic compound |
| CN101851150A (en) * | 2010-03-30 | 2010-10-06 | 山东福田药业有限公司 | Novel sugar alcohol hydrogenation technology |
| CN203437105U (en) * | 2013-08-27 | 2014-02-19 | 山东道可化学有限公司 | Gas backflushing type alkali liquor reaction device |
| CN203778037U (en) * | 2014-03-06 | 2014-08-20 | 江苏格罗瑞化学有限公司 | Compression and discharge device of triazinone oxidation reaction kettle |
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| CN104492345A (en) | 2015-04-08 |
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