CN209287249U - A kind of high-temperature catalytic reaction unit - Google Patents
A kind of high-temperature catalytic reaction unit Download PDFInfo
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- CN209287249U CN209287249U CN201821721574.8U CN201821721574U CN209287249U CN 209287249 U CN209287249 U CN 209287249U CN 201821721574 U CN201821721574 U CN 201821721574U CN 209287249 U CN209287249 U CN 209287249U
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- catalytic reaction
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Abstract
The utility model relates to high-temperature catalytic reaction unit, be made of shell and tube reactor, liquid metal, double-tube heat exchanger, electromagnetic pump, valve pipeline, temperature control modules (including temperature sensor, controller, valve and heating furnace).Liquid metal flows in the shell side of tubular heat exchanger as catalyst carrier, the reaction temperature environment in tubulation is heated or cooled, the stabilization of maintaining reaction temperature.Liquid metal circulates in double-tube heat exchanger, heating furnace along pipeline, and the heating power by controlling heating furnace maintains temperature constant.The utility model takes full advantage of the advantages that higher boiling of liquid metal, high-termal conductivity, good fluidity, safety and stability, using liquid metal as catalyst carrier, can provide higher reaction temperature, safer structure.High-temperature catalytic reaction unit provided by the utility model, operating temperature is high, can be widely used for strong exothermal reaction, strong endothermic reaction and reaction and carries out cracking production.
Description
Technical field
The utility model relates to a kind of high-temperature catalytic reaction units, and the reactor assembly operating temperature is high, can be widely used for
Strong exothermal reaction, strong endothermic reaction and reaction carry out cracking production, such as prepn. of formaldehyde by oxidation of methanol, o xylene oxidation, second
Alkene aoxidizes epoxy ethane etc..
Background technique
Shell and tube reactor is also known as bundled tube reactor.By many very thin reaction tubes form, pipe is provided with catalyst
Fixed bed reactors.Structure is similar to shell-and-tube heat exchanger, is made of tube bank, shell, both ends end socket etc..Cigarette is used outside tubulation
Institute's calorific requirement, or the heat released using the removals such as fused salt conduction oil and water reaction are reacted in the offers such as gas, high-temperature vapor, maintain
Reaction temperature.
Since heat-transfer effect is good, reaction temperature is easy to control shell and tube reactor, is widely used in chemical plant installations.Tubulation
Coolant in formula reactor uses water, conduction oil, fuse salt, vapor, flue gas more.But the operating temperature of water, conduction oil
Low, conduction oil, viscosity height, poor fluidity, the convection transfer rate of fuse salt are low, vapor operating pressure height, system complex, cigarette
Gas thermal capacity is small, temperature stability is poor.Reaction temperature is higher, endothermic heat of reaction/thermal discharge is larger or wants to reaction temperature control
It asks in higher situation, traditional tubular heat exchanger is difficult to meet the requirements.
Liquid metal is used to flow in the shell side of tubular heat exchanger as catalyst carrier, because liquid metal is high boiling
The features such as point, high-termal conductivity, good fluidity, safety and stability, while the reaction temperature environment in tubulation is heated or cooled simultaneously
The stabilization of maintaining reaction temperature, so that production efficiency is higher, it is more stable, it is safer.
Summary of the invention
The purpose of this utility model is to provide use liquid metal be catalyst carrier high-temperature catalytic reaction unit, sufficiently benefit
The advantages that with the higher boiling of liquid metal, high-termal conductivity, good fluidity, safety and stability, so that production efficiency is higher, it is more stable,
It is safer.
The technical solution of the utility model is as follows:
A kind of high-temperature catalytic reaction unit that the utility model is proposed, as shown in Figure 1, including shell and tube reactor, set
Heat exchange of heat pipe, liquid metal, electromagnetic pump, temperature control modules (including temperature sensor, controller, heating furnace and valve) etc..
Liquid metal flows in the shell side of shell and tube reactor as catalyst carrier, by tubulation reaction temperature environment heating or it is cold
But, the stabilization of maintaining reaction temperature.Liquid metal circulates in double-tube heat exchanger, heating furnace along pipeline, is added by control
The heating power of hot stove maintains temperature constant.
Further, catalyst is housed, raw material enters after tubulation in constant temperature, high temperature in the tubulation of the shell and tube reactor
Under carry out catalysis reaction, control the temperature of reaction using circulating for liquid metal catalyst carrier outside tubulation.
Further, the liquid metal is low-melting-point metal of the fusing point at -40 DEG C ~ 300 DEG C.
Further, the liquid metal can be mercury, gallium and its alloy, tin and its alloy, bismuth and its alloy or lead and
Its alloy.
Further, the electromagnetic pump is used to that liquid metal is driven to be recycled.
Further, described sleeve pipe heat exchanger is mounted on liquid metal pipeline, the entrance of raw material, is entered in raw material anti-
It answers and is preheated before device.
Further, the temperature control modules include temperature sensor, controller, valve and heating furnace, pass through temperature
By controlling the heating power of signal control valve door and heating furnace after sensor detects reactor temperature, via controller calculates,
Adjust the temperature of liquid metal.
A kind of high-temperature catalytic reaction unit of the utility model can be provided higher using liquid metal as catalyst carrier
Reaction temperature, safer structure.Device is controlled the temperature of liquid metal one by temperature control modules, double-tube heat exchanger
Determine in range, the constant liquid metal of temperature maintains the perseverance of reaction temperature in production process as the catalyst carrier of shell and tube reactor
It is fixed, reaction efficiency is improved, reaction safety is maintained and stablizes.
Detailed description of the invention
Fig. 1 is shown to be shown using the theory structure of the embodiment of liquid metal shell and tube reactor according to the present utility model
It is intended to.
Description of symbols: 1- shell and tube reactor, 2- double-tube heat exchanger, 3- liquid metal, 4- electromagnetic pump, 5- temperature control
Molding block.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further describes the utility model.
1. ethylene epoxy ethane
Strong exothermal reaction, reaction temperature are 220 DEG C ~ 260 DEG C, if cooling system failure, reaction temperature will be rapidly increased to
400 DEG C, reaction efficiency sharply declines, and there is also the danger such as leakage, explosion.
Original uses conduction oil as catalyst carrier, and thermal coefficient is low, and temperature control capability is poor, and service life of heat transfer oil is short, needs
It is regularly maintained.
Use liquid metal as catalyst carrier, the capacity of heat transmission is high, temperature control capability is strong, can control temperature in 20 DEG C of models
In enclosing, long service life.In the present embodiment, liquid metal uses bismuth indium stannum alloy, and (alloy compositions (mass fraction) is bismuths
32.5%, indium 51%, tin 16.5%), fusing point is 60 degrees Celsius.
Liquid metal is hot-melted by system starting Shi Xianyong hot wind in advance, then opens liquid metal circulation, opening temperature control
System processed after liquid metal is heated to required temperature using heating furnace, starts production process.Temperature control system is according to detection
The opening and closing of the reaction temperature control heating furnace arrived and the switch of related valve, so that the temperature of liquid metal be made to tie up
It holds constant.
2. prepn. of formaldehyde by oxidation of methanol
Strong exothermal reaction, reaction temperature are 500 DEG C ~ 650 DEG C, and original uses vapor as catalyst carrier, and system pressure is high, ties
Structure is complicated, at high cost.
Use liquid metal as catalyst carrier, can work within 2000 DEG C, system be normal pressure system, it is safe and stable, at
This is low.Liquid metal for conducting heat ability is high, temperature control capability is strong, can control temperature within the scope of 80 DEG C.In the present embodiment, liquid
State metal uses bismuth terne metal (alloy compositions (mass fraction) for bismuth 50%, lead 28%, tin 22%), and fusing point is 100 degrees Celsius.
Liquid metal is hot-melted by system starting Shi Xianyong hot wind in advance, then opens liquid metal circulation, opening temperature control
System processed after liquid metal is heated to required temperature using heating furnace, starts production process.Temperature control system is according to detection
The opening and closing of the reaction temperature control heating furnace arrived and the switch of related valve, so that the temperature of liquid metal be made to tie up
It holds constant.
Finally it should be noted that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application.Although
The utility model is described in detail referring to embodiment, those skilled in the art should understand that, it is practical new to this
The technical solution of type is modified or replaced equivalently, without departing from the spirit and scope of the technical scheme of the present invention,
It should cover in the scope of the claims of the utility model.
Claims (7)
1. a kind of high-temperature catalytic reaction unit, which is characterized in that its composition is as follows:
One shell and tube reactor (1), the shell and tube reactor (1) are connected with liquid metal circulation line, pass through liquid metal
It circulates and guarantees reaction temperature constant in reactor；
A set of heat exchange of heat pipe (2), described sleeve pipe heat exchanger (2) are used to preheat the raw material for entering reactor；
One liquid metal (3), the liquid metal (3) are flowed in the shell side of shell and tube reactor (1) as catalyst carrier, along pipe
Road circulates in double-tube heat exchanger (2), heating furnace；
One electromagnetic pump (4), the electromagnetic pump (4) are used to that liquid metal (3) is driven to recycle；
One temperature control modules (5), the temperature control modules (5) include temperature sensor, controller, valve and heating furnace,
Reactor temperature is detected by temperature sensor, by the heating power of controller control valve door and heating furnace, adjusts liquid
The temperature of metal (3).
2. a kind of high-temperature catalytic reaction unit according to claim 1, which is characterized in that the shell and tube reactor (1)
Tubulation in catalyst is housed, raw material enters after tubulation carries out catalysis reaction under constant temperature, high temperature, and liquid metal is used outside tubulation
Catalyst carrier circulates to control the temperature of reaction.
3. a kind of high-temperature catalytic reaction unit according to claim 1, which is characterized in that described sleeve pipe heat exchanger (2) peace
On liquid metal pipeline, the entrance of raw material is preheated before raw material enters reactor.
4. a kind of high-temperature catalytic reaction unit according to claim 1, which is characterized in that the liquid metal (3) is molten
Low-melting-point metal of the point at -40 DEG C~300 DEG C.
5. a kind of high-temperature catalytic reaction unit according to claim 1, which is characterized in that the electromagnetic pump is used to drive liquid
State metal (3) is recycled.
6. a kind of high-temperature catalytic reaction unit according to claim 1, which is characterized in that the temperature control modules (5)
Including temperature sensor, controller, valve and heating furnace, reactor temperature, via controller meter are detected by temperature sensor
By the heating power of control signal control valve door and heating furnace after calculation, the temperature of liquid metal (3) is adjusted.
7. a kind of high-temperature catalytic reaction unit according to claim 1, which is characterized in that the liquid metal (3) be mercury,
Gallium and its alloy, tin and its alloy, bismuth and its alloy or lead and its alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821721574.8U CN209287249U (en) | 2018-10-23 | 2018-10-23 | A kind of high-temperature catalytic reaction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821721574.8U CN209287249U (en) | 2018-10-23 | 2018-10-23 | A kind of high-temperature catalytic reaction unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209287249U true CN209287249U (en) | 2019-08-23 |
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ID=67646700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821721574.8U Active CN209287249U (en) | 2018-10-23 | 2018-10-23 | A kind of high-temperature catalytic reaction unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209287249U (en) |
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2018
- 2018-10-23 CN CN201821721574.8U patent/CN209287249U/en active Active
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Effective date of registration: 20230420 Granted publication date: 20190823 |