CN206701231U - A kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature - Google Patents
A kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature Download PDFInfo
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- CN206701231U CN206701231U CN201720395958.4U CN201720395958U CN206701231U CN 206701231 U CN206701231 U CN 206701231U CN 201720395958 U CN201720395958 U CN 201720395958U CN 206701231 U CN206701231 U CN 206701231U
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Abstract
The utility model discloses a kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature, reactor tank body is divided into the adiabatic section at top and the conversion zone below adiabatic section, adiabatic section is filled with inertia refractory porcelain layers of balls A, mixed distribution device is provided with the middle part of conversion zone, conversion zone is divided into upper conversion zone and lower conversion zone, the import of Quench gas connects with mixed distribution device, mixed distribution device is filled with inertia refractory porcelain layers of balls B up and down, hydrogenation catalyst is packed full with upper conversion zone and lower conversion zone, lower reaction pars infrasegmentalis is filled with inertia refractory porcelain layers of balls C.The utility model has the advantages that：Adiabatic section makes reaction bed temperature raise rapidly, reaches the temperature required for reaction, improves beds utilization rate and service life；The import of Quench gas, which is provided with mixed distribution device, makes Quench gas be uniformly distributed with hydrogen, acetic acid and its esters steam, using the reaction temperature of sharp cold air adjustment conversion zone, a large amount of reaction heat of output remove heat in time when can react acetic acid and its esters series of products preparation of ethanol by hydrogenating, prevent from reacting overtemperature, in order to avoid causing reaction efficiency to reduce or even make catalyst inactivation, ethanol yield is improved.
Description
Technical field
A kind of reaction unit of petrochemical industry is the utility model is related to, particularly one kind is used for acetic acid and its esters system
Row product is the gas, the fixed bed catalyst of solid phase reaction that are used when being hydrogenated with the technical process of waste ethanol
Device.
Background technology
Reactor is to complete the equipment that chemical reaction process occurs for two or more medium, is petrochemical plant
In nucleus equipment.Under normal circumstances, the reactant such as the gas in reactor or liquid, passed through with the state of flowing fixed
Beds complete course of reaction, and gas phase or liquid phase flowing, catalyst transfixion.The uniform flow of reaction medium
It is dynamic, it is to ensure that reaction is fully and complete crucial, and weigh the important indicator of reactor performance.Therefore the uniform of medium is improved
Flow most important.
When carrying out the reaction of acetic acid and its esters series of products preparation of ethanol by hydrogenating, can the substantial amounts of reaction heat of output, it is necessary to
Pay attention to removing heat in time, if overtemperature, be likely to result in the reduction of reaction efficiency or even make catalyst inactivation.Hydrogenation reaction is led to
Further adding for generation target product ethanol, especially the intermediate product esters such as acetic acid and esters can be controlled by entering the amount of hydrogen
Hydrogen, the generation of accessory substance is reduced, improve ethanol yield.
At present, the reaction generally use of acetic acid and its esters series of products preparation of ethanol by hydrogenating is fixed tubular reaction
Device, such reactor batch temperature is more uniform, easy to operate, byproduct steam, and energy is recyclable rationally to be utilized.But such reacts
Problems be present in device：Catalyst space-time yield is low, and beds epimere temperature is relatively low, and bed epimere catalyst utilization is not
It is high；Catalyst packing is difficult, and it is uneven that Catalyst packing is easily caused during filling；Catalyst is easily poisoned, and influences to use
Life-span；Reactor unit area production capacity is low, and equipment difficulty of processing is big and the process-cycle is grown.
Utility model content
Purpose of utility model：In view of the above-mentioned problems, the purpose of this utility model, which is to provide one kind, is used for acetic acid and its esters
The fixed bed catalytic reactor of series of products preparation of ethanol by hydrogenating reaction, prevent from reacting overtemperature, improve beds utilization rate.
Technical scheme：A kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature, reactor tank body by cylinder,
Upper cover, low head are formed, and the upper cover is provided with gas feed, and the low head is provided with discharge port and reacting product outlet；
The reactor tank body is divided into the adiabatic section at top and the conversion zone below adiabatic section, the adiabatic section filling
There is inertia refractory porcelain layers of balls A, be provided with mixed distribution device in the middle part of the conversion zone, conversion zone is divided into upper conversion zone and lower reaction
Section, the import of Quench gas connect with the mixed distribution device, and the mixed distribution device is filled with inertia refractory porcelain layers of balls B up and down,
Hydrogenation catalyst is packed full with the upper conversion zone and the lower conversion zone, the lower reaction pars infrasegmentalis is filled with inertia fire resisting
Porcelain layers of balls C.
Optimal, pressing plate is provided with above the inertia refractory porcelain layers of balls A, reacting gas is uniformly distributed into inertia through pressing plate
Refractory porcelain layers of balls A, gas bias current is prevented, ensure that axially the load of beds is consistent everywhere in reactor.
Optimal, the inertia refractory porcelain layers of balls A couples company with the hydrogenation catalyst in the upper conversion zone by silk screen
Connect.Adiabatic section is directly cascaded with upper conversion zone by silk screen, efficient coupling, can be entered by adiabatic section during loading catalyst
OK, it is big to load operating surface, efficiency high, and it is easy to Catalyst packing in conversion zone uniform.
Optimal, the filling of the inertia refractory porcelain layers of balls A is highly 30~200mm, inertia alumina ball a diameter of 10
~30mm；The filling of the inertia refractory porcelain layers of balls B is highly 100~300mm, a diameter of 10~30mm of inertia alumina ball；
The inertia refractory porcelain layers of balls C is formed by upper and lower two layers, and the filling on upper strata is highly 30~200mm, inertia alumina ball diameter
For 10~30mm, the filling of lower floor is highly 50~400mm, a diameter of 30~50mm of inertia alumina ball.
The mixed distribution device is injecting type or diffusion type.
Optimal, the Quench gas import is provided with bypass valve.Temperature is by Quench gas bypass valve in conversion zone
Automatically control is adjusted, according to the temperature change of working environment in conversion zone, is switched on or off bypass valve automatically, from
And the size for the Quench gas tolerance being passed through can be adjusted, to ensure the height of the reaction temperature of conversion zone.
Optimal, Quench gas is nitrogen, hydrogen, and the hydrogen is the hydrogen underused that reaction is isolated after cooling
Gas, hydrogenation reaction institute liberated heat, and reusable edible hydrogen are both carried out in transferable conversion zone on catalyst, is promoted anti-
Should.
Beneficial effect：Compared with prior art, the utility model has the advantages that：
The 1st, adiabatic section is set above conversion zone, reaction bed temperature is raised rapidly, is reached required for reacting
Temperature, improve beds utilization rate and service life；
2nd, the Quench gas import in portion steams Quench gas and hydrogen, acetic acid and its esters provided with mixed distribution device in the reactor
Vapour is uniformly distributed, can be by acetic acid and its esters series of products preparation of ethanol by hydrogenating using the reaction temperature of sharp cold air adjustment conversion zone
A large amount of reaction heat of output remove heat in time during reaction, prevent from reacting overtemperature, in order to avoid cause reaction efficiency to reduce or even make to urge
Agent inactivates；
3 while by the intake of controlled chilling gas, acetic acid and esters etc. can be controlled to generate target product ethanol, especially
It is the further hydrogenation of intermediate product esters, reduces the generation of accessory substance, improves ethanol yield；
4th, adiabatic section and conversion zone efficient coupling, with reacting gas is evenly distributed, bed temperature is reasonably distributed, produces energy
The advantages of power is big, energy regenerating utilization rate is high, Catalyst packing is convenient, catalyst service life extends.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the utility model is furtherd elucidate, it should be understood that these embodiments are only used for
Illustrate the utility model rather than limitation the scope of the utility model, after the utility model has been read, art technology
Modification of the personnel to the various equivalent form of values of the present utility model falls within the application appended claims limited range.
A kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature, as shown in Figure 1, reactor tank body is by resistance to
Cylinder 1, upper cover 2, the low head 3 of high pressure are formed, and upper cover 2 is provided with gas feed 4, and low head 3 is provided with discharge port 5 and reaction
Product exit 6.Reactor tank body is divided into three parts, and positioned at the adiabatic section in the region of upper cover 2 at top, cylinder 1 is divided into
Conversion zone and lower conversion zone, and the low head 3 positioned at bottom.
Adiabatic section is filled with inertia refractory porcelain layers of balls A7 in the bottom of upper cover 2, and filling height is 30~200mm, and inertia is resistance to
Fiery porcelain bulb diameter is 10~30mm, and its top is provided with the pressing plate 8 that uniform gas flows into.
Separate between upper conversion zone and lower conversion zone provided with mixed distribution device 9, mixed distribution device 9 is injecting type or diffusion
Formula, Quench gas import 10 connect with mixed distribution device 9, and Quench gas import 10 is provided with bypass valve.Mixed distribution device is about 9
It is filled with inertia refractory porcelain layers of balls B11, filling height is 100~300mm, a diameter of 10~30mm of inertia alumina ball, on
Hydrogenation catalyst, inertia refractory porcelain layers of balls A7 and the hydrogenation catalyst in upper conversion zone are packed full with conversion zone and lower conversion zone
Connected by silk screen connected in series.
Lower conversion zone is filled with inertia refractory porcelain layers of balls C12 in the bottom of cylinder 1, is formed by upper and lower two layers, the filling on upper strata
Highly it is 30~200mm, a diameter of 10~30mm of inertia alumina ball, the filling of lower floor is highly 50~400mm, inertia fire resisting
Porcelain bulb diameter is 30~50mm.
Reacting gas raw hydrogen and acetic acid or its esters steam enter reactor from gas feed, and adiabatic section makes catalyst
Bed temperature is raised rapidly, reaches the temperature required for reaction, and then reacting gas is uniformly distributed into inertia fire resisting through pressing plate
Porcelain layers of balls A, gas bias current is prevented, ensure that axially the load of beds is consistent everywhere in reactor, subsequently enter filling and add
Reacted in the conversion zone of hydrogen catalyst.Quench gas is used for the reaction temperature for adjusting conversion zone, and mixed distribution device makes Quench gas
It is uniformly distributed with hydrogen, acetic acid and its esters steam, so as to be produced when reacting acetic acid and its esters series of products preparation of ethanol by hydrogenating
The a large amount of reaction heat gone out remove heat in time, prevent from reacting overtemperature, in order to avoid cause reaction efficiency to reduce or even make catalyst inactivation.
Discharge port is mainly used in hydrogenation catalyst discharge, and reacting product outlet is used to discharge the alcohol vapour of generation and unnecessary reaction
Material.
Quench gas using nitrogen, hydrogen, make by the hydrogen underused that can isolate reactor reaction after cooling
For Quench gas, hydrogenation reaction institute liberated heat, and reusable edible hydrogen are both carried out in transferable conversion zone on catalyst, is promoted
Enter reaction.Control, a series of controls of bypass valve are adjusted by Quench gas bypass valve in temperature automatically in conversion zone
Element is switched on or off bypass valve according to the temperature change of working environment in conversion zone automatically, logical so as to adjust
The size of the Quench gas tolerance entered, to ensure the height of the reaction temperature of conversion zone., can be with by the intake of controlled chilling gas
The further hydrogenation of generation target product ethanol, especially the intermediate product esters such as acetic acid and esters is controlled, reduces accessory substance
Produce, improve ethanol yield.
The utility model is also applied for other consersion units similar to operating mode simultaneously, is that former hydrogenation reactor structure is changed
Enter, reach and make full use of raw material, improve product yield, prevent from reacting the effect of overtemperature.
Claims (6)
- A kind of 1. gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature, it is characterised in that：Reactor tank body is by cylinder (1), upper cover (2), low head (3) are formed, and the upper cover (2) is provided with gas feed (4), and the low head (3) is provided with and unloaded Material mouth (5) and reacting product outlet (6)；The reactor tank body is divided into the adiabatic section at top and the conversion zone below adiabatic section, the adiabatic section are filled with lazy Property refractory porcelain layers of balls A (7), be provided with mixed distribution device (9) in the middle part of the conversion zone, conversion zone be divided into upper conversion zone and lower reaction Section, Quench gas import (10) connect with the mixed distribution device (9), and it is resistance to that the mixed distribution device (9) is filled with inertia up and down Hydrogenation catalyst, the lower reaction pars infrasegmentalis are packed full with fiery porcelain layers of balls B (11), the upper conversion zone and the lower conversion zone It is filled with inertia refractory porcelain layers of balls C (12).
- 2. a kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature according to claim 1, its feature exist In：Pressing plate (8) is provided with above the inertia refractory porcelain layers of balls A (7).
- 3. a kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature according to claim 1, its feature exist In：The inertia refractory porcelain layers of balls A (7) is of coupled connections with the hydrogenation catalyst in the upper conversion zone by silk screen.
- 4. a kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature according to claim 1, its feature exist In：The filling of the inertia refractory porcelain layers of balls A (7) is highly 30~200mm, a diameter of 10~30mm of inertia alumina ball；Institute The filling for stating inertia refractory porcelain layers of balls B (11) is highly 100~300mm, a diameter of 10~30mm of inertia alumina ball；It is described lazy Property refractory porcelain layers of balls C (12) is formed by upper and lower two layers, and the filling on upper strata is highly 30~200mm, and inertia alumina ball is a diameter of 10~30mm, the filling of lower floor is highly 50~400mm, a diameter of 30~50mm of inertia alumina ball.
- 5. a kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature according to claim 1, its feature exist In：The mixed distribution device (9) is injecting type or diffusion type.
- 6. a kind of gas-solid phase reaction fixed bed catalytic reactor of Quench controlled atmosphere temperature according to claim 1, its feature exist In：The Quench gas import (10) is provided with bypass valve.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215886A (en) * | 2019-06-05 | 2019-09-10 | 国家能源投资集团有限责任公司 | The method for controlling reaction temperature of low carbon alcohol by synthetic gas reactor |
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2017
- 2017-04-14 CN CN201720395958.4U patent/CN206701231U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215886A (en) * | 2019-06-05 | 2019-09-10 | 国家能源投资集团有限责任公司 | The method for controlling reaction temperature of low carbon alcohol by synthetic gas reactor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200108 Address after: No. 101, Jingkou Road, Zhenjiang, Jiangsu, Jiangsu Co-patentee after: Jiangsu Sopo Chemical Co.,Ltd. Patentee after: Jiangsu Thorpe Engineering Technology Co., Ltd. Address before: 212006 Dantu Jingkou District Zhenjiang city Jiangsu province Chang Gang (acetic acid factory) Co-patentee before: Jiangsu Soap (Group) Co., Ltd. Patentee before: Jiangsu Thorpe Engineering Technology Co., Ltd. |