CN205443196U - A scission reaction pipe for ethylene schizolysis collimated light source - Google Patents
A scission reaction pipe for ethylene schizolysis collimated light source Download PDFInfo
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- CN205443196U CN205443196U CN201521128800.8U CN201521128800U CN205443196U CN 205443196 U CN205443196 U CN 205443196U CN 201521128800 U CN201521128800 U CN 201521128800U CN 205443196 U CN205443196 U CN 205443196U
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Abstract
The utility model relates to a scission reaction pipe for ethylene schizolysis collimated light source, for a reaction straight tube, reaction straight tube upper end is feed inlet, and the lower extreme is the cracking gas export, certainly reaction straight tube upper end rises to follow reaction straight tube axial direction top -down divides first sampling section, second sampling section and third sampling section in proper order into, and each sampling section is equipped with at least one branch pipe of sampling respectively, the branch pipe with it is protruding that reaction straight tube inner wall junction below is equipped with an arc. Adopt the utility model discloses the scission reaction pipe for can make things convenient for, nimble reaction to the cracked small -size experimental apparatus of simulation ethylene different positions carries out assay, research.
Description
Technical field
This utility model relates to a kind of for ethylene raw cracking performance laboratory evaluation device, is specially a kind of cracking reaction pipe.
Background technology
The overwhelming majority of world Ethylene yield is above being produced by tube cracking furnace, and reactor is the core of ethylene producing device, and cracking of ethylene reactor the most in the world is essentially all tubular reactor.The major part of industrial pyrolysis furnace reactor i.e. radiant section, its boiler tube is by a long tube manufactured by resistant to elevated temperatures alloy material, and its diameter is 36～120mm, and length is from 10～65m.In order to understand ethylene production situation in advance, many manufacturing enterprises develop laboratory cracking of ethylene reaction evaluating device, these experimental provisions typically have the technological process essentially identical with commercial plant, but a lot of affiliated facilities of relative simplicity, only remain core these necessity such as raw material sample introduction part, steam generation part, preheating, reactor, chilling and gas-liquid separate section, crucial.The reactor of these experimental provisions the most all imitates industrial furnace radiant section, use one uniformly, not reducing compo pipe cooled down by chilling in exit after reaction inner reaction tube completes as reaction tube, raw material, thus gas-liquid separation, more analyzed, metering.These not reducing compo pipe diameter typically 4～30mm, length 50～500mm, be not variable diameter straight tube, there is no bifurcated.The advantage of these reactors is substantially the most consistent with the reactor of industrial pyrolysis furnace, and structure is extremely simple, can simulate the running status of industrial reactor to a certain extent, for evaluating ethylene raw material or carry out coking behavior research etc..But it is disadvantageous in that the type reactor is when some mechanistic research, can only question response be fully completed after disposably analyze mensuration in exit, and the reaction condition of reactor different piece (such as intake section, reaction temperature peak, the more part of secondary response etc.) can not be measured respectively, analyzes and studies.
CN201020121709.4 discloses the Pilot Unit of a kind of analog vinyl cracking, it is characterized in that: the technique copying general ethylene unit, invented the Pilot Unit of a kind of undersized analog vinyl cracking according to the classical flow process of raw material → vaporization → reaction → cooling → metering.Idiographic flow is that deionized water is connected with deionized water gasification burner, and cracking stock is connected with cracking stock gasification burner；Deionized water gasification burner and cracking stock gasification burner are connected with blender, and blender is placed in blender heating furnace；Blender is connected with cracking furnace pipe, and cracking furnace pipe is placed in pyrolysis furnace；Cracking furnace pipe is connected with water-quencher, coolant knockout drum and tail gas metering device, cooling knockout drum is connected with tail gas Autosampler, effusion meter, coolant knockout drum is connected with Liquid acquisition bottle by three-way solenoid valve, tail gas metering device is connected with tail gas suspended body flowmeter, three-way solenoid valve, tail gas suspended body flowmeter are connected with program timer, and deionization water pot and cracking stock pot bottom are provided with LOAD CELLS or electronic balance.What the reaction tube of this device used is also the most common single straight tube, disposably analyzes at reactor outlet, it is impossible to the reaction to different parts is analyzed, studies.CN200710043882.X discloses a kind of hydrocarbons pyrolysis coking judgment pilot experimental device, it is characterized in that: this invention is mainly for hydrocarbons pyrolysis coking evaluation, this device mainly include raw material transport, gasify, preheat, crack, vent gas treatment and burn system, this device is also the classical process-oriented layout according to raw material → vaporization → reaction → cooling.What this device reaction pipe used is also single straight tube, layout the most in the reactor is snakelike arrangement, and 4 Pressure gauges have been installed additional in reactor outlet, entrance and centre, observe Coking, this device weak point is also to be disposably to analyze at reactor outlet, it is impossible to the reaction to different parts is analyzed, studies.Lin Taiming, recklessly have " cracking ethylene preparation experimental provision (BSPA) introduction " (petrochemical technology and the application looked forward or upwards, 1998, (2): 66-67) article also describes the Pilot Unit of a kind of laboratory simulation cracking of ethylene, its architectural feature is the most consistent with the device of CN201020121709.4, the reaction tube of this device is also common single straight tube, the problem existed also is disposably can only to analyze at reactor outlet, it is impossible to the reaction to different parts is analyzed, studies.
Utility model content
A kind of cracking reaction pipe for cracking of ethylene evaluation experimental that this utility model provides, compare the reaction tube that existing experimental provision uses, the cracking reaction pipe that this utility model provides is improved on the basis of tradition straight tube so that the Pilot Unit of analog vinyl cracking can facilitate, reaction to different parts flexibly is analyzed, studies.
In order to achieve the above object, this utility model provides a kind of cracking reaction pipe for cracking of ethylene evaluation experimental, described reaction tube is a reaction straight tube, described reaction straight tube upper end is feed(raw material)inlet, lower end is cracking gas outlet, autoreaction straight tube upper end is risen and is in turn divided into the first sampling section, the second sampling section and the 3rd sampling section from top to bottom along reaction straight tube axial direction, described each sampling section is respectively equipped with at least one sampling arm, and described arm is provided with an arc convex below reaction straight tube inwall junction.
The described cracking reaction pipe for cracking of ethylene evaluation experimental, described sampling arm arranges stop valve.
The described cracking reaction pipe for cracking of ethylene evaluation experimental, described sampling arm arranges heat exchanger.
The described cracking reaction pipe for cracking of ethylene evaluation experimental, on described reaction straight tube, position and the quantity of each sampling section up-sampling arm are adjusted according to character and the evaluation needs of cracking stock.
The described cracking reaction pipe for cracking of ethylene evaluation experimental, the sampling arm of the first described sampling section is arranged at autoreaction straight tube upper end and rises between the 1/4 of reaction length of straight pipe.
The described cracking reaction pipe for cracking of ethylene evaluation experimental, the sampling arm of the second described sampling section is arranged between the reaction length of straight pipe 1/4-3/4 risen autoreaction straight tube upper end.
The described cracking reaction pipe for cracking of ethylene evaluation experimental, the sampling arm of the 3rd described sampling section is arranged at the reaction length of straight pipe 3/4 risen autoreaction straight tube upper end to reacting between straight tube end.
Being mainly characterized by of this device is provided with sampling arm on reaction straight tube, solves and can not observe the problem of arbitrfary point reaction condition in reaction tube in the past, can analyze, measure the cracking situation of specified point in reaction tube flexibly and effectively.And in sampling arm lower end, arc convex is set, this arc convex is space multistory arc, and surface perimeter limit and tube wall smooth fluid-tight engagement, and its structure can make part cracking gas enter sampling arm smoothly, effectively reduce again turbulent perturbation, prevent at quick coking and blocking reaction tube herein.
Compare the reaction tube that existing experimental provision uses, the cracking reaction pipe that this utility model provides is improved on the basis of tradition straight tube, it is respectively provided with sampling apparatus respectively so that the Pilot Unit of analog vinyl cracking can facilitate, reaction to different parts flexibly is analyzed, studies on the cracking tube wall that cracking reaction earlier part, cracking reaction accelerating part, cracking reaction the most acutely part and secondary response part are corresponding.
Accompanying drawing explanation
Fig. 1 is this utility model pyrolysis furnace reaction tube schematic diagram.
Reference:
1-reacts straight tube；
2-feed(raw material)inlet；
3-cracking gas exports；
4-first section of sampling；
5-second section of sampling；
6-the 3rd samples section；
7,8,9,10-samples arm；
11-arc convex；
12-stop valve；
13-heat exchanger.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model device and work process thereof are described further.
As it is shown in figure 1, reaction straight tube 1 upper end is feed(raw material)inlet 2, lower end is cracking gas outlet 3, and reaction straight tube 1 is divided into the first sampling section the 4, second sampling section 5 and the 3rd sampling section 6 from feed(raw material)inlet 2 from top to bottom.
One sampling arm 7 is set in first sampling section 4, is positioned at autoreaction straight tube upper end and rises to the 1/8 of reaction length of straight pipe；2 sampling arms 8 and 9 are set in second sampling section, lay respectively at autoreaction straight tube upper end to rise to the 1/4 of reaction length of straight pipe and at 1/2, for initial reaction stage material carries out sampling analysis, the sampling arm of the second sampling section 5 is preferably disposed between the reaction length of straight pipe 1/4-3/4 risen autoreaction straight tube upper end；Arranging a sampling arm 10 in 3rd sampling section, be positioned at autoreaction straight tube upper end and rise to the 3/4 of reaction length of straight pipe, the sampling arm of the 3rd sampling section is preferably disposed between the reaction length of straight pipe 3/4-reaction straight tube end risen autoreaction straight tube upper end.Each sampling arm and reaction lower end, straight tube inwall junction are respectively provided with arc convex 11, and on reaction straight tube, position and the quantity of each sampling section up-sampling arm can need to adjust according to the character of cracking stock and evaluation.
Being respectively provided with stop valve 12 and heat exchanger 13 on sampling arm, stop valve 12 is used for controlling material on sampling arm and flows out, and heat exchanger 13 is for cooling down the material of extraction.In this utility model, sampling arm can need to use according to evaluation experimental simultaneously, or individually uses.
As a example by Fig. 1, the specific works process of this utility model device is:
Before experiment starts, by the stop valve Close All on sampling arm, the import and export of refrigerant lines with heat exchanger are connected.Start experiment: observe cracking gas outlet cracking gas flow and reaction tube temperature instruction, after cracker reaches steady operational status 10 minutes, open the stop valve on the sampling arm needing sampling point on reaction straight tube, control flow, the part cracking gas reacted in straight tube 1 is allowed to pass through heat exchanger, cracking gas is condensed, gas-liquid is completely segregated, it is analyzed that isolated gas phase and liquid phase respectively enter subsequent analysis equipment, thus obtain reacting the straight tube 1 reactive state data at sampling, understand cracking reaction situation in this place.
Result of the test is as follows:
Certainly; this utility model also can have other various embodiments; in the case of without departing substantially from this utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and deformation according to this utility model, but these change accordingly and deformation all should belong to this utility model scope of the claims.
Claims (7)
1. the cracking reaction pipe for cracking of ethylene evaluation experimental, it is characterized in that, it it is a reaction straight tube, described reaction straight tube upper end is feed(raw material)inlet, lower end is cracking gas outlet, being in turn divided into the first sampling section, the second sampling section and the 3rd sampling section from top to bottom along described reaction straight tube axial direction from described reaction straight tube upper end, each sampling section is respectively equipped with at least one sampling arm, is provided with an arc convex below described arm and described reaction straight tube inwall junction.
Cracking reaction pipe for cracking of ethylene evaluation experimental the most according to claim 1, it is characterised in that on described sampling arm, stop valve is set.
Cracking reaction pipe for cracking of ethylene evaluation experimental the most according to claim 1, it is characterised in that on described sampling arm, heat exchanger is set.
Cracking reaction pipe for cracking of ethylene evaluation experimental the most according to claim 1, it is characterised in that on described reaction straight tube, position and the quantity of each sampling section up-sampling arm are adjusted according to character and the evaluation needs of cracking stock.
Cracking reaction pipe for cracking of ethylene evaluation experimental the most according to claim 1, it is characterised in that the sampling arm of the first described sampling section is arranged at autoreaction straight tube upper end and rises between the 1/4 of reaction length of straight pipe.
Cracking reaction pipe for cracking of ethylene evaluation experimental the most according to claim 1, it is characterised in that the sampling arm of the second described sampling section is arranged between the described reaction length of straight pipe 1/4-3/4 from described reaction straight tube upper end.
Cracking reaction pipe for cracking of ethylene evaluation experimental the most according to claim 1, it is characterised in that the sampling arm of described 3rd sampling section is arranged at described reaction length of straight pipe 3/4 from described reaction straight tube upper end between described reaction straight tube end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521128800.8U CN205443196U (en) | 2015-12-29 | 2015-12-29 | A scission reaction pipe for ethylene schizolysis collimated light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521128800.8U CN205443196U (en) | 2015-12-29 | 2015-12-29 | A scission reaction pipe for ethylene schizolysis collimated light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205443196U true CN205443196U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521128800.8U Active CN205443196U (en) | 2015-12-29 | 2015-12-29 | A scission reaction pipe for ethylene schizolysis collimated light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205443196U (en) |
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2015
- 2015-12-29 CN CN201521128800.8U patent/CN205443196U/en active Active
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