CN102287834A - Oil-gas catalytic-reaction device and catalytic-combustion processing system - Google Patents
Oil-gas catalytic-reaction device and catalytic-combustion processing system Download PDFInfo
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- CN102287834A CN102287834A CN2011102020487A CN201110202048A CN102287834A CN 102287834 A CN102287834 A CN 102287834A CN 2011102020487 A CN2011102020487 A CN 2011102020487A CN 201110202048 A CN201110202048 A CN 201110202048A CN 102287834 A CN102287834 A CN 102287834A
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- heat exchanger
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- reaction device
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Abstract
The invention relates to a catalytic-reaction device with a heat exchanger, which is formed by installing a catalytic reactor in an inner cavity of the heat exchanger, the catalytic reactor comprises catalyst assemblies and a copper pipe, a catalyst is placed in a cavity formed from two conical perforated plates to form a catalyst assembly, a plurality of assemblies are placed in the copper pipe by being spaced at a certain distance, one end of the copper pipe is provided with an air inlet, the other end of the copper pipe is provided with an air outlet, both the air inlet and the air outlet extend out of the heat exchanger, and the conical tips of the catalyst assemblies face to an air-outlet direction. Furthermore, the invention also provides a catalytic-combustion processing system formed by utilizing the catalytic-reaction device, which comprises the catalytic-reaction device with the heat exchanger, the heat exchanger, a preheater, a plurality of flow-control valves, a temperature-control system and connecting pipelines. The device and the system have simple structures, are convenient to operate and can be adapted to variable-concentration oil-gas catalytic combustion, the temperature runaway is automatically inhibited, and the catalyst is prevented from being sintered.
Description
Technical field
The present invention relates to oil gas catalytic combustion treatment technology, be specifically related to a kind of oil gas catalytic reactor device and utilize catalytic reaction to eliminate the catalytic combustion treatment system of various concentration oil gas, can directly use in oil depot, gas station, factory etc., also can be in the terminal use of gas recovery system for oil.
Background technology
In June, 2007; three pollutant emission control criterions requirements such as " storage tank farm atmosphere pollutants emission standardses " of State Environmental Protection Administration's promulgation, the oil-gas recovery processing device that the big volume of the circular flow occasion of oil products such as storage tank farm is installed should meet the requirement of exhaust of oil concentration≤25mg/L and treatment effeciency 〉=95 %.And present oil-gas recovery method, it is not high all to exist organic efficiency in various degree as active carbon adsorption, solvent absorption, condensation method and membrane separation process etc., does not reach standard-required, life-span is short, cost an arm and a leg, problems such as power consumption height cause its application not general.Along with environmental consciousness and more and more strictness of environmental protection standard, wherein DIN requires to reach 99.9% treatment effeciency.Only rely on recovery technology can not reach the standard of strictness like this, reclaim and add that the method for burning is more feasible.Directly firing method since the flame temperature height be easy to generate secondary pollution (
), limited its application.Production by Catalytic Combustion Process is a catalytic oxidation completely, under the effect of catalyst, makes the harmful combustible component complete oxidation under the lower condition of temperature in the waste gas.Catalytic combustion is not subjected to the restriction of gas concentration, and ignition can not produce secondary pollution at low temperatures, is a kind of combustion technology of high-efficiency environment friendly.
But nowadays the problem that exists of catalytic combustion is: catalyst is easy-sintering and inactivation at high temperature, and the oil gas burning is a kind of strong exothermic reaction, can sharply rise and cause " temperature runaway " if deal with the burner temperature improperly.Gas concentration in the oil depot changes along with variation of temperature on the other hand, and for example gas concentration can reach 42% when environment temperature is 40 ℃; During 5 ℃ of environment temperatures, gas concentration can reach 29%, thus after treatment or the gas concentration after the displacement also be different.Catalytic burner spininess of today just can not cause temperature runaway to a kind of concentration.When concentration changes, must reset operational factor even redesign burner structure and dimensional parameters.
Summary of the invention
The objective of the invention is to deficiency, propose a kind of catalyst reaction device, can adapt to the oil gas catalytic combustion of degree of thickening with heat exchanger at the prior art existence, simple in structure, easy to operate, can suppress temperature runaway automatically, prevent sintering of catalyst.A kind of catalytic combustion treatment system of using this catalyst reaction device is further also proposed.
Technical scheme of the present invention is as follows:
A kind of catalyst reaction device with heat exchanger is made up of heat exchanger and catalytic reactor, and its spy is: described catalytic reactor is contained in the heat exchanger cavity, and heat exchanger is respectively equipped with air inlet and gas outlet;
Described catalytic reactor is made of catalyst assembly and copper pipe; Catalyst is placed in the cavity that two cone-type piercer plates form forms a catalyst assembly, several inter-modules are arranged among the copper pipe at a certain distance, and an end of copper pipe is an air inlet, and an end is the gas outlet, all stretch out in outside the heat exchanger, catalyst assembly awl point is towards outgassing direction.
The characteristics of above catalyst reaction device are heat exchanger and catalytic reactor are become one, and can enter the air velocity of heat exchanger by adjusting, control the heat radiation on catalytic reactor surface.Particularly when temperature is too high in the catalyst converter, increase air-flow velocity, reduce the temperature of catalyst surface, prevent the inactivation that sintering of catalyst causes.In addition, the catalytic reactor handle component is designed to taper, can reduce on the one hand the combustion heat to the center laterally in diffusion, reduce near the temperature the reactor center axle, boundary layer that on the other hand can attenuate reactor inner surface, enhancing heat exchange to external world; Catalyst is divided into several catalyst assemblies and the purpose of placing of keeping at a certain distance away be prevent the granular pattern catalyst buildup form together heat vertically in diffusion, cause temperature sharply to raise, cause sintering of catalyst; By the interval of catalyst assembly, the heat that reaction on each catalyst assembly is generated is delivered to wall, is taken out of by radiated rib on the outside wall surface and extraneous heat convection.
This catalyst reaction device is suitable for hypoxemia oil gas catalytic combustion, adopts multilayer, inner conical structure to guarantee hypoxemia low concentration oil gas efficiency of combustion.
The present invention further proposes a kind of catalytic combustion treatment system of utilizing above catalyst reaction device to form, its catalyst reaction device, heat exchanger, preheater, several flow control valves by the band heat exchanger, and temperature control system and connecting pipe are formed; Be divided into two-way from the oil gas of oil tank output after through a threeway: a route first flow control valve inserts heat exchanger by connecting line; The heat exchanger on catalyst reaction device surface is inserted by connecting line in another road, and then inserts heat exchanger through connecting line; The outlet side of described heat exchanger connects preheater by connecting line, the outlet side of preheater is again by the catalytic reactor in the catalyst reaction device of connecting line connecting band heat exchanger, giving vent to anger of catalytic reactor picks out by connecting line, and branch two-way, one the tunnel takes back heat exchanger, and another route second flow control valve control is discharged as waste gas.In addition, heat exchanger has also directly picked out flue gas leading.
Described temperature control system detects the temperature of these positions by the temperature sensor of the port of export setting of holding wire connection catalytic reactor and preheater; Connect first and second flow control valves by control line, the flow of valve is controlled according to the detected temperature of temperature sensor.
The catalyst reaction device that the present invention proposes and use the catalytic combustion treatment system of this catalyst reaction device simple in structure, easy to operate can adapt to the oil gas catalytic combustion of degree of thickening, and suppresses temperature runaway automatically, prevents sintering of catalyst.
Description of drawings
Fig. 1 is the structural representation of the catalyst reaction device of band heat exchanger;
Fig. 2 is the structural representation of catalytic combustion treatment system.
The specific embodiment
Further specify structure of the present invention below in conjunction with accompanying drawing:
Referring to Fig. 1, this catalyst reaction device is made up of heat exchanger 4 and catalytic reactor 6, and catalytic reactor is contained in the heat exchanger cavity, and heat exchanger is respectively equipped with air inlet and gas outlet.
Based on above catalyst reaction device, the present invention further proposes a kind of catalytic combustion treatment system, referring to Fig. 2, its catalyst reaction device, heat exchanger 7, preheater 2, several flow control valves by the band heat exchanger, temperature control system and connecting pipe are formed.Be divided into two-way from the oil gas of oil tank output after through a threeway: a route first flow control valve 3 inserts heat exchanger 7 by connecting line; The heat exchanger 4 on catalyst reaction device surface is inserted by connecting line in another road, and then inserts heat exchanger 7 through connecting line.The outlet side of heat exchanger 7 connects preheater 2 by connecting line, the outlet side of preheater 2 connects catalytic reactor 6 by pipeline again, and the gas-output through-pipe of catalytic reactor picks out, and divides two-way, one the tunnel takes back heat exchanger 7, and another route second flow control valve 5 controls are discharged as waste gas.In addition, heat exchanger 7 has also directly picked out flue gas leading.Temperature control system 1 connects the temperature sensor of the port of export setting of catalytic reactor and preheater by holding wire, detect the temperature of these positions, and connect first and second flow control valves 3 and 5 by control line, according to the detected temperature of temperature sensor the flow of valve is controlled.Temperature control system is controlled the aperture of flow valve according to the temperature in the catalytic reactor (thermocouple records), thereby controls the heat exchange amount on catalytic reactor surface or the heat exchange amount of heat exchanger, finally reaches the purpose that makes temperature stabilization in the catalytic reactor.
The working method of native system:
Through a threeway, be divided into two strands: one directly enters heat exchanger 7 by flow control valve 3 to oil gas under fan action; Another strand oil gas leads to the catalyst reaction device of band heat exchanger 4, after dispelling the heat to it in the surface of catalytic reactor, enters heat exchanger 7 again.If arbitrary measuring point temperature that temperature controller detects in the reactor is higher than 800 ℃, can increase the low temperature oil gas flow that enters heat exchanger 4 by first flow control valve 3, thereby increase the flow velocity of gas in the heat exchanger 4, the heat convection of enhancing reactor outside wall surface and oil gas finally reduces the temperature of reactor.Vice versa.Preheater 2 is by being tied with heat tape (silk) and being made up of coated cylindrical shell of heat-insulating material and the thermocouple that is used for temperature detection, and its effect is the oil gas temperature that control enters reactor.During startup, preheater 2 heated air make outlet temperature reach the initiation temperature of reactor.Low excessively as gas concentration, the shortage of heat that process heat exchanger 7 obtains is to be heated to oil gas to initiation temperature, and preheater 2 is just worked always; When the gas concentration height, the burning heat release is big, and preheating stops.When heater outlet temperature too high (greater than 400 ℃), the aperture of temperature controller 1 control second flow control valve 5 directly to atmosphere part waste gas, reduces the tolerance that enters heat exchanger 7, thereby reduce the heat that oil gas obtains from heat exchanger 7, reduce the oil gas temperature.
After the startup, native system has several duties:
State 1: concentration is crossed when hanging down, preheater 2 work, and second flow control valve 5 cuts out, first flow control valve 3 standard-sized sheets.
State 2: during excessive concentration, preheater 2 stops heating, second flow control valve, 5 standard-sized sheets, and first flow control valve 3 is closed, and oil gas can burn voluntarily.Too high as temperature, can reduce the oil gas total amount that enters.
State 3: when concentration was suitable, preheater was not worked, and second flow control valve 5 cuts out or keeps certain aperture, and first flow control valve 3 keeps certain aperture.
Claims (4)
1. the catalyst reaction device with heat exchanger is made up of heat exchanger and catalytic reactor, and its spy is: described catalytic reactor is contained in the heat exchanger cavity, and heat exchanger is respectively equipped with air inlet and gas outlet;
Described catalytic reactor is made of catalyst assembly and copper pipe; Catalyst is placed in the cavity that two cone-type piercer plates form forms a catalyst assembly, several inter-modules are put at a certain distance and are arranged among the copper pipe, and an end of copper pipe is an air inlet, and an end is the gas outlet, all stretch out in outside the heat exchanger, catalyst assembly awl point is towards outgassing direction.
2. the catalyst reaction device of band heat exchanger according to claim 1 is characterized in that: the outside wall surface of described copper pipe is provided with radiated rib.
3. the catalytic combustion treatment system of utilizing claim 1 or 2 described catalyst reaction devices to form, it is characterized in that: its catalyst reaction device by the described band heat exchanger of claim 1, a heat exchanger, preheater, several flow control valves, temperature controller and a connecting pipe are formed; Be divided into two-way from the oil gas of oil tank output after through a threeway: a route first flow control valve inserts heat exchanger by connecting line; The heat exchanger on catalyst reaction device surface is inserted by connecting line in another road, and then inserts heat exchanger through connecting line; The outlet side of described heat exchanger connects preheater by connecting line, the outlet side of preheater is again by the catalytic reactor in the connecting line connection catalyst reaction device, giving vent to anger of catalytic reactor picks out by connecting line, and branch two-way, one the tunnel takes back heat exchanger, and another route second flow control valve control is discharged as waste gas;
Described temperature controller detects the temperature of these positions by the temperature sensor of the port of export setting of holding wire connection catalytic reactor and preheater; Connect first and second flow control valves by control line, the flow of valve is controlled according to the detected temperature of temperature sensor.
4. the catalytic combustion treatment system that catalyst reaction device according to claim 3 forms, it is characterized in that: described heat exchanger has also directly picked out flue gas leading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110202048 CN102287834B (en) | 2011-07-19 | 2011-07-19 | Oil-gas catalytic-reaction device and catalytic-combustion processing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110202048 CN102287834B (en) | 2011-07-19 | 2011-07-19 | Oil-gas catalytic-reaction device and catalytic-combustion processing system |
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| CN102287834A true CN102287834A (en) | 2011-12-21 |
| CN102287834B CN102287834B (en) | 2013-01-02 |
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Citations (8)
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| CN2340905Y (en) * | 1998-03-10 | 1999-09-29 | 张永芳 | High performance environment protection oil-saving purifier for gasoline vehicle |
| US6368566B1 (en) * | 1997-07-24 | 2002-04-09 | Apparatebau Rothemuhle Brandt & Kritzler Gmbh | Flue gas pipe and method for treating flue gas |
| JP2004097650A (en) * | 2002-09-12 | 2004-04-02 | Shinnetsu Kogyo Kk | Deodorizer |
| CN2916400Y (en) * | 2006-02-27 | 2007-06-27 | 福建方明钢铁有限公司 | Color-coated exhaust gas catalytic combustion device for use in color steel production line |
| CN200986199Y (en) * | 2006-11-03 | 2007-12-05 | 江苏金牛环保工程设备有限公司 | High concentration organic discharge gas catalyzed burning system |
| EP2051007A1 (en) * | 2007-10-16 | 2009-04-22 | Robert Dal Pra' | Economiser/environmentally-friendly device to be used in combustion heating appliances |
| CN201531873U (en) * | 2009-10-27 | 2010-07-21 | 中国石油化工股份有限公司 | Catalytic combustion reactor |
| CN101543684B (en) * | 2009-04-02 | 2011-05-18 | 中国石油化工股份有限公司 | Process for treating oxidized exhaust gas |
-
2011
- 2011-07-19 CN CN 201110202048 patent/CN102287834B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6368566B1 (en) * | 1997-07-24 | 2002-04-09 | Apparatebau Rothemuhle Brandt & Kritzler Gmbh | Flue gas pipe and method for treating flue gas |
| CN2340905Y (en) * | 1998-03-10 | 1999-09-29 | 张永芳 | High performance environment protection oil-saving purifier for gasoline vehicle |
| JP2004097650A (en) * | 2002-09-12 | 2004-04-02 | Shinnetsu Kogyo Kk | Deodorizer |
| CN2916400Y (en) * | 2006-02-27 | 2007-06-27 | 福建方明钢铁有限公司 | Color-coated exhaust gas catalytic combustion device for use in color steel production line |
| CN200986199Y (en) * | 2006-11-03 | 2007-12-05 | 江苏金牛环保工程设备有限公司 | High concentration organic discharge gas catalyzed burning system |
| EP2051007A1 (en) * | 2007-10-16 | 2009-04-22 | Robert Dal Pra' | Economiser/environmentally-friendly device to be used in combustion heating appliances |
| CN101543684B (en) * | 2009-04-02 | 2011-05-18 | 中国石油化工股份有限公司 | Process for treating oxidized exhaust gas |
| CN201531873U (en) * | 2009-10-27 | 2010-07-21 | 中国石油化工股份有限公司 | Catalytic combustion reactor |
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Effective date of registration: 20191014 Address after: 401311, No. 20, Chengbei Road, Shapingba District, Chongqing Patentee after: PLA Military Service College Address before: 401311 Department of fluid mechanics and fluid machinery, School of logistics engineering, University City, Shapingba District, Chongqing Patentee before: Du Yang |
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Granted publication date: 20130102 Termination date: 20200719 |
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