CN101037719A - Gas integral heat treating method and device for large-scale pressure container - Google Patents
Gas integral heat treating method and device for large-scale pressure container Download PDFInfo
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- CN101037719A CN101037719A CN 200710055477 CN200710055477A CN101037719A CN 101037719 A CN101037719 A CN 101037719A CN 200710055477 CN200710055477 CN 200710055477 CN 200710055477 A CN200710055477 A CN 200710055477A CN 101037719 A CN101037719 A CN 101037719A
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Abstract
A integral heat treatment method of a large pressurized vessel gas, laminated-heating pressurized vessel using plural gas combustors, includes: plural gas combustors for laminated-heating pressurized vessel; an air feed apparatus for providing steady gas source for gas combustors; a guide apparatus for guiding the airflow of the burning gas; an thermometric apparatus for measuring in real time and copying the temperature of each part of the pressurized vessel; A flue apparatus for adjusting in real time the inner pressure of pressurized vessel, a autocontrol apparatus for controlling in real time the output of the gas combustors. The mothod of the invention has good heating power, good internal hot recycle, high autocontrol precision, the quality of integral heat treatment of pressurized vessel is assured. The effect of service performance of the weld joint by the sulfide in the burning process can be effectively reduced using a gas with low-sulfur as a fuel, while it satisfies the special requirement of integral heat treatment after welding a large pressurized vessel in petroleum and chemical industry.
Description
Technical field:
The present invention relates to integral heat-processing method and device, especially relate to a kind of method and device that utilizes the combustion gas method large pressurized vessel to be carried out complete heat treatment metal vessel.
Background technology:
Large pressurized vessel is meant because of weight of equipment or transport routes restriction, needs to make at the scene the pressurized vessel that (assembly welding) finished.Along with the development of petrochemical industry, various chemical industry steel towers, container have the trend of more and more large-scale change, nearly 9 meters as the diameter of acrylonitrile reactor, have highly reached about 30 meters.Big pressurized vessel like this is carried out POST WELD HEAT TREATMENT OF ENTIRE become the technical barrier that needs to be resolved hurrily.
Pressurized vessel heat treatment technics at present commonly used has two kinds of electrical heating method and fuel oil methods, all has technological deficiency in various degree when carrying out the large pressurized vessel complete heat treatment.When adopting the electrical heating method complete heat treatment, power consumption is quite big, and the working-yard can't be satisfied at all, in addition construction cost height, long construction period, be unsuitable for large pressurized vessel POST WELD HEAT TREATMENT OF ENTIRE (usual method is first segmentation thermal treatment, again each intersegmental weld seam is carried out partial heat treatment); When adopting the complete heat treatment of fuel oil method, usually can provide enough heats, but because heat is too concentrated, and tower pressurized vessel is often because its reasons in structure causes the internal heat circulating effect poor, the uniform distribution that is unfavorable for heat in the container, there are technological difficulties such as upper and lower temperature difference is big, local temperature hysteresis when therefore being applied to the large pressurized vessel complete heat treatment, cause thermal treatment quality not high.In addition, because sulphur content is higher in the light diesel fuel that the fuel oil method adopts, the sulfide that produces in combustion processes will influence the use properties of welding joint, so must not explicitly call for the fuel oil method of using in POST WELD HEAT TREATMENT OF ENTIRE such as many tower pressurized vessels of petrochemical industry such as acrylonitrile reactors, also limited further application and the improvement of this method aspect pressurized vessel.
Summary of the invention:
Technical problem to be solved by this invention aims to provide a kind of practicable method and device that utilizes the combustion gas method to the large pressurized vessel POST WELD HEAT TREATMENT OF ENTIRE, to overcome the above-mentioned defective that exists when existing integral heat-processing method and device are applied to the large pressurized vessel complete heat treatment.
Heat treating method of the present invention comprises the following steps:
(1) pressurized vessel that at first need is carried out complete heat treatment is located on the corresponding skirt as the sealing burner hearth;
(2) utilize lagging material to be incubated to the pressurized vessel outside;
(3) adopt many gas burner layerings that pressurized vessel is carried out heat supply;
(4) at the inner guiding device of installing of pressurized vessel, the combustion gas hot gas flow is carried out water conservancy diversion with pressurize internal tank thermal cycling effect;
(5) automatic control device is connected with gas burner, gas burner is controlled automatically, gas burner is lighted heating with the combustion gas that air feeder provides, the air feed of gas burner partly provides corresponding air quantity to guarantee that combustion gas is fully burnt and the incendiary gas flame is sent into formation combustion gas hot gas flow in the pressurized vessel, by the temperature at temperature measuring equipment monitoring in real time and each position of force of impression container simultaneously;
(6) the pressurized vessel top utilizes flue device adjusting container pressure to be malleation, to promote the circulation of pressurized vessel internal heat;
(7) pressurized vessel begins heat temperature raising from normal temperature, and when heat-up rate in accordance with regulations reached in the thermal treatment constant temperature scope of regulation, beginning constant temperature was to specific time, and then the cooling of cooling rate in accordance with regulations.
Be used to realize that the device of method of the present invention comprises:
Many gas burners are installed in the manhole or adapter place of pressurized vessel bottom, sidewall respectively, in order to pressurized vessel layering heat supply, provide enough thermals source;
An air feeder is installed in the gas burner front end, with thinking that gas burner provides stable source of the gas;
A guiding device is installed in pressurized vessel inside, carries out water conservancy diversion in order to the combustion gas hot gas flow to fuel gas buring, improves the thermal cycling of internal tank;
A temperature measuring equipment is in order to the temperature at real-time monitoring and each position of force of impression container;
A flue device is installed in pressurized vessel top manhole or adapter place, in order to the pressurized vessel pressure inside is regulated in real time;
An automatic control device is connected with gas burner, and the real-time target temperature value of thermal treatment of the feedback signal that automatic control device records according to temperature measuring equipment and each sampling instant of setting compares processing, controls the output of gas burner in real time.
The present invention compares with electrical heating method, need not adopt first segmentation, the partial heat treating method in back, has improved the thermal treatment operating efficiency, has reduced the thermal treatment construction cost, has shortened the thermal treatment construction period; Compare with the fuel oil method, the present invention carries out the layering heat supply according to many gas burners of the actual employing of pressurized vessel operating mode, and is aided with guiding device, has improved the thermal cycling effect of pressurized vessel inside, thereby has guaranteed the complete heat treatment quality of pressurized vessel.In addition, adopt sulphur content combustion gas (liquefied gas or Sweet natural gas) on the low side to act as a fuel, reduced in the process combustion sulfide effectively the influence of welding joint use properties.
In sum, the technology of the present invention has overcome the defective that exists separately when electrical heating method and two kinds of heat treatment technicss of fuel oil method are applied to the large pressurized vessel complete heat treatment, have many gas burner configurations flexibly, the stratified combustion heat supply evenly, effective, the fuel of internal tank thermal cycling is to advantages such as the influence of welding joint use properties are low, especially is fit to the construction of petrochemical industry large pressurized vessel POST WELD HEAT TREATMENT OF ENTIRE.
Description of drawings:
Fig. 1 is a thermal treatment process step synoptic diagram of the present invention;
Fig. 2 is a gas burner principle of work synoptic diagram;
Fig. 3 is the flow-guiding umbrella structural representation in the guiding device;
Fig. 4 is the flow-guiding umbrella structural representation in the guiding device;
Fig. 5 is that temperature measuring equipment constitutes synoptic diagram;
Fig. 6 is that flue device constitutes synoptic diagram;
Fig. 7 is an automatic control device principle of work synoptic diagram.
Embodiment:
With reference to Fig. 1, gas integral heat treating method of the present invention comprises the following steps:
(1) at first with pressurized vessel 3 as the sealing burner hearth, be located on the skirt 7;
(2) utilize lagging material to be incubated to pressurized vessel 3 outsides;
(3) with many gas burners 4 respectively with the manhole of pressurized vessel 3 bottoms, sidewall or take over and is connected and seals, to pressurized vessel layering heat supply, provide enough thermals source;
(4) at the pressurized vessel 3 inner guiding devices 2 of installing, combustion gas hot gas flow 1 is carried out water conservancy diversion with pressurize internal tank thermal cycling effect;
(5) automatic control device 6 is connected with gas burner 4, gas burner is controlled automatically, gas burner 4 is lighted heating with the combustion gas that air feeder 5 provides, combustion gas can be a liquefied gas, it also can be Sweet natural gas, the gas blower of gas burner provides corresponding air quantity to guarantee that combustion gas is fully burnt and the incendiary gas flame is sent into formation combustion gas hot gas flow in the pressurized vessel, by the temperature at temperature measuring equipment 8 monitoring in real time and each position of force of impression container simultaneously;
(6) the pressurized vessel top utilizes flue device 9 adjusting container pressures to be malleation, to promote the circulation of pressurized vessel internal heat;
(7) pressurized vessel begins heat temperature raising from normal temperature, and when heat-up rate in accordance with regulations reached in the thermal treatment constant temperature scope of regulation, beginning constant temperature was to specific time, and then the cooling of cooling rate in accordance with regulations.
With reference to Fig. 2, gas burner comprises air feed part, control section, ignition section, air feed part and main fiery part.Gas burner is fixed in the manhole or adapter place of pressurized vessel bottom or sidewall, the air feed part links to each other with air feeder, after control section starts, ignition section is lighted and will be led the fire part and lights, the general mood automatic mixing of air feed part is also forced the flame flow of lighting to send in the pressurized vessel, the heat that provides fuel combustion to discharge for pressurized vessel.Gas burner is connected with corresponding automatic control device, and the real-time working condition during according to pressurized vessel thermal treatment is regulated the fuel gas buring situation in real time.Gas burner adopts liquefied gas or Sweet natural gas to act as a fuel, and when the combustion gas that provides when air feeder is liquefied gas, can be liquid gas storage tank, also can be lng tanker; When the combustion gas that provides is Sweet natural gas, can be natural gas line etc.Air feeder is connected with gas burner, for it provides required fuel, sulphur content in the combustion gas is far below the sulphur content in the solar oil, can reduce in the process combustion sulfide effectively to the influence of welding joint use properties, be particularly suited for of the particular requirement of petrochemical industry large pressurized vessel the complete heat treatment construction.
With reference to Fig. 3, Fig. 4, guiding device is made up of flow-guiding umbrella 10 and water conservancy diversion plate washer 11, and the guiding device lower supporter is welded by white steel plate processing, covers resistant to elevated temperatures pure aluminium silicate insulating cotton on it, and it is fixing to adopt white steel mesh to hide.Whole device is by white steel pipe or be suspended to manhole, or utilizes in the container on the wall various weldments to carry out oblique up-down stretch and support.10 pairs of hot gas flows that vertically make progress of flow-guiding umbrella reflect, and hot gas flow are upwards flowed, to strengthen the thermal cycling of each layer inside from this layer bottom along wall; The horizontal flame stream of the 11 pairs of gas burners of water conservancy diversion plate washer ejection reflects, and guarantees that flame flow does not directly contact with wall of container, easily causes wall phenomenon generation overbumt when having avoided horizontal burning.
With reference to Fig. 5, temperature measuring equipment comprises thermopair, compensating lead wire, temperature measuring equipment, thermopair is fixed in the pressurized vessel outer wall, provides pressurized vessel each position temperature value by compensating lead wire for temperature measuring equipment, and temperature measuring equipment is measured in real time, each position temperature value of force of impression container.Temperature measuring equipment is a multi-point temperature measurement equipment, can show the also temperature value at each position of force of impression container in real time.
With reference to Fig. 6, flue device comprises draws together flue 13, butterfly valve 12 and umbilical cable 14 3 parts, flue device is installed in pressurized vessel top manhole or adapter place, and the aperture that automatic control device is regulated butterfly valve 12 in real time by umbilical cable 14 is with the pressure of pressure vessel pressure inside.
With reference to Fig. 7, automatic control device adopts computer software to control, and is connected with gas burner, and gas burner is controlled automatically.During work, each temperature thermocouple that is distributed in the pressurized vessel outer wall feeds back to temperature measuring equipment with the each point real time temperature value that records by compensating lead wire, and enter automatic control device and handle, automatic control device compares processing with the real-time target temperature value of the thermal treatment of each sampling instant of these data and setting, greater than target temperature value, then gas burner quits work as the feedback temperature value; Start working otherwise gas burner starts, adjust the output of gas burner automatically.
Claims (3)
1, large pressurized vessel gas integral heat treating method is characterized in that: this method comprises the following steps:
(1) pressurized vessel that at first need is carried out complete heat treatment is located on the corresponding skirt as the sealing burner hearth;
(2) utilize lagging material to be incubated to the pressurized vessel outside;
(3) adopt many gas burner layerings that pressurized vessel is carried out heat supply;
(4) at the inner guiding device of installing of pressurized vessel, the combustion gas hot gas flow is carried out water conservancy diversion with pressurize internal tank thermal cycling effect;
(5) automatic control device is connected with gas burner, gas burner is controlled automatically, gas burner is lighted heating with the combustion gas that air feeder provides, simultaneously the air feed of gas burner partly provides corresponding air quantity to form hot gas flow in the pressurized vessel to guarantee that combustion gas is fully burnt and the incendiary gas flame sent into, by the temperature at temperature measuring equipment monitoring in real time and each position of force of impression container;
(6) the pressurized vessel top utilizes flue device adjusting container pressure to be malleation, to promote the circulation of pressurized vessel internal heat;
(7) pressurized vessel begins heat temperature raising from normal temperature, and when heat-up rate in accordance with regulations reached in the thermal treatment constant temperature scope of regulation, beginning constant temperature was to specific time, and then the cooling of cooling rate in accordance with regulations.
2, a kind of device that is used to realize the method for claim 1, it is characterized in that: this device comprises:
Many gas burners are installed in the manhole or adapter place of pressurized vessel bottom, sidewall respectively, in order to pressurized vessel layering heat supply, provide enough thermals source;
An air feeder is installed in the gas burner front end, with thinking that gas burner provides stable source of the gas;
A guiding device is installed in pressurized vessel inside, carries out water conservancy diversion in order to the combustion gas hot gas flow to fuel gas buring, improves the thermal cycling of internal tank;
A temperature measuring equipment is in order to the temperature at real-time monitoring and each position of force of impression container;
A flue device is installed in pressurized vessel top manhole or adapter place, in order to the pressurized vessel pressure inside is regulated in real time;
An automatic control device is connected with gas burner, and the real-time target temperature value of thermal treatment of the feedback signal that automatic control device records according to temperature measuring equipment and each sampling instant of setting compares processing, controls the output of gas burner in real time.
3, device according to claim 2, it is characterized in that: gas burner comprises air feed part, control section, ignition section, air feed part and main fiery part, the air feed part links to each other with air feeder, control section connects ignition section, and ignition section is connected main fiery part separately with the air feed part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710055477XA CN100489120C (en) | 2007-04-02 | 2007-04-02 | Gas integral heat treating method and device for large-scale pressure container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710055477XA CN100489120C (en) | 2007-04-02 | 2007-04-02 | Gas integral heat treating method and device for large-scale pressure container |
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| Publication Number | Publication Date |
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| CN101037719A true CN101037719A (en) | 2007-09-19 |
| CN100489120C CN100489120C (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200710055477XA Expired - Fee Related CN100489120C (en) | 2007-04-02 | 2007-04-02 | Gas integral heat treating method and device for large-scale pressure container |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956054A (en) * | 2010-09-29 | 2011-01-26 | 吉林亚新工程检测有限责任公司 | Horizontal type integral heat treatment method of large-size pressure vessel |
| CN101684515B (en) * | 2008-09-28 | 2014-07-23 | 傅家仁 | In-situ piecewise heat treatment method of large pressure container |
| CN106755777A (en) * | 2017-03-24 | 2017-05-31 | 江苏钰特耐磨科技有限公司 | A kind of back-fire arrangement |
| CN107815530A (en) * | 2017-11-30 | 2018-03-20 | 中国石油天然气第七建设有限公司 | Pin-connected panel heat-treatment furnace |
| CN108319740A (en) * | 2017-12-04 | 2018-07-24 | 吉林亚新工程检测有限责任公司 | The vertical bulk heat treatmet Numerical Model of Temperature Field modeling method of pressure vessel internal combustion method |
| CN109022711A (en) * | 2018-10-17 | 2018-12-18 | 江苏力沃新能源科技股份有限公司 | Whole post weld heat treatment system outside large pressurized vessel |
| CN109182722A (en) * | 2018-10-17 | 2019-01-11 | 江苏力沃新能源科技股份有限公司 | Whole post weld heat treatment method outside large pressurized vessel |
| CN109680133A (en) * | 2018-12-30 | 2019-04-26 | 武汉一冶钢结构有限责任公司 | Earthing formula storage tank post weld heat treatment method |
| CN110249178A (en) * | 2017-02-01 | 2019-09-17 | Vt燃烧器技术公司 | Stratified burners |
| CN110512066A (en) * | 2019-09-18 | 2019-11-29 | 大连金鼎石油化工机器有限公司 | A kind of spherical tank heat-treatment technology method |
-
2007
- 2007-04-02 CN CNB200710055477XA patent/CN100489120C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684515B (en) * | 2008-09-28 | 2014-07-23 | 傅家仁 | In-situ piecewise heat treatment method of large pressure container |
| CN101956054B (en) * | 2010-09-29 | 2012-10-10 | 吉林亚新工程检测有限责任公司 | Horizontal type integral heat treatment method of large-size pressure vessel |
| CN101956054A (en) * | 2010-09-29 | 2011-01-26 | 吉林亚新工程检测有限责任公司 | Horizontal type integral heat treatment method of large-size pressure vessel |
| CN110249178A (en) * | 2017-02-01 | 2019-09-17 | Vt燃烧器技术公司 | Stratified burners |
| US11536449B2 (en) | 2017-02-01 | 2022-12-27 | Rafe Tierra Williams | Tiered burner |
| CN110249178B (en) * | 2017-02-01 | 2022-01-07 | Vt燃烧器技术公司 | Layered combustor |
| CN106755777A (en) * | 2017-03-24 | 2017-05-31 | 江苏钰特耐磨科技有限公司 | A kind of back-fire arrangement |
| CN107815530A (en) * | 2017-11-30 | 2018-03-20 | 中国石油天然气第七建设有限公司 | Pin-connected panel heat-treatment furnace |
| CN108319740A (en) * | 2017-12-04 | 2018-07-24 | 吉林亚新工程检测有限责任公司 | The vertical bulk heat treatmet Numerical Model of Temperature Field modeling method of pressure vessel internal combustion method |
| CN109182722A (en) * | 2018-10-17 | 2019-01-11 | 江苏力沃新能源科技股份有限公司 | Whole post weld heat treatment method outside large pressurized vessel |
| CN109022711A (en) * | 2018-10-17 | 2018-12-18 | 江苏力沃新能源科技股份有限公司 | Whole post weld heat treatment system outside large pressurized vessel |
| CN109680133A (en) * | 2018-12-30 | 2019-04-26 | 武汉一冶钢结构有限责任公司 | Earthing formula storage tank post weld heat treatment method |
| CN110512066A (en) * | 2019-09-18 | 2019-11-29 | 大连金鼎石油化工机器有限公司 | A kind of spherical tank heat-treatment technology method |
| CN110512066B (en) * | 2019-09-18 | 2021-03-30 | 大连金鼎石油化工机器有限公司 | Heat treatment process method for spherical tank |
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| Publication number | Publication date |
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| CN100489120C (en) | 2009-05-20 |
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Granted publication date: 20090520 Termination date: 20160402 |