CN110559959A - Semi-continuous anti-blocking subcritical/supercritical reaction heating device - Google Patents
Semi-continuous anti-blocking subcritical/supercritical reaction heating device Download PDFInfo
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- CN110559959A CN110559959A CN201910898848.3A CN201910898848A CN110559959A CN 110559959 A CN110559959 A CN 110559959A CN 201910898848 A CN201910898848 A CN 201910898848A CN 110559959 A CN110559959 A CN 110559959A
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- supporting plate
- furnace body
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- subcritical
- clogging
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 53
- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- 238000001816 cooling Methods 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000000463 material Substances 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012075 bio-oil Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00103—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor in a heat exchanger separate from the reactor
Abstract
The invention discloses a semi-continuous anti-blocking subcritical/supercritical reaction heating device which comprises a furnace body, wherein a first supporting plate, a second supporting plate and a third supporting plate are sequentially arranged in the furnace body from top to bottom, three grooves are respectively formed in the long side surfaces of the three supporting plates at the same side, and an inserting piece can be screwed into each groove through the rotation of three lifting rods to complete the up-and-down movement of the first supporting plate, the second supporting plate and the third supporting plate, so that the continuous transmission of a reaction kettle in the heating furnace is realized, and the continuous transmission can be realized through manual operation. Compared with the prior art, the invention discloses a semi-continuous anti-clogging subcritical/supercritical reaction heating device which can process mixed or independent biomasses with various concentrations, load raw materials into sub-reaction kettles and realize approximately continuous feeding and discharging.
Description
Technical Field
The invention relates to a semi-continuous anti-blocking subcritical/supercritical reaction heating device, and belongs to the technical field of subcritical/supercritical conversion.
Background
The sub/supercritical conversion of biomass can be divided into gasification, liquefaction and carbonization according to different reaction conditions, and can convert wet biomass. High temperature and high pressure reaction conditions are generally required. In the case of relatively low temperature and pressure (below 350 ℃), it is commonly used to make biochar and bio-oil, known as hydrothermal carbonization and hydrothermal liquefaction, with higher temperatures and pressures used for supercritical water gasification.
The current subcritical/supercritical reactor is mainly divided into two types: continuous reactors and batch reactors. Continuous reactors often suffer from plugging, particularly with high concentrations of biomass, which generally have a high char yield and are not suitable for continuous reactors.
Batch reactors are relatively inefficient and are used primarily in laboratories. Due to the requirement of high pressure on the reactor, the current reaction device cannot be very large, and the adaptability of the reactor is reduced. Therefore, there is a strong need in the art for an apparatus capable of continuously performing high temperature reactions to enable mass production, and to put the conversion of sub/supercritical conversion into practical use.
disclosure of Invention
the technical problem to be solved by the invention is to provide a semi-continuous anti-clogging subcritical/supercritical reaction heating device aiming at the defects of the prior art.
in order to solve the technical problems, the invention adopts the technical scheme that:
a semi-continuous anti-clogging subcritical/supercritical reaction heating device is characterized in that: the furnace comprises a hollow furnace body, wherein the hollow structure of the furnace body is a cuboid, and a feed inlet and a discharge outlet are respectively arranged on the lower side and the upper side of the furnace body;
A first supporting plate, a second supporting plate and a third supporting plate are sequentially arranged in the furnace body from top to bottom, and the first supporting plate, the second supporting plate and the third supporting plate are all rectangular structures;
three grooves are respectively formed in one long side face of the first supporting plate, the second supporting plate and the third supporting plate, the three grooves are located close to the center of the long side, three lifting rods are arranged on the side, one lifting rod corresponds to one groove, inserting pieces are arranged at the bottoms of the lifting rods, the upper portions of the three lifting rods penetrate through the top of the furnace body, and the inserting pieces can be screwed into the grooves after the lifting rods rotate;
The top of the furnace body is provided with a locking mechanism for fixing the lifting rod.
As a further preferable scheme, a closed front cabin is arranged outside the feeding hole, an opening and closing door is arranged on the front cabin, a closed rear cabin is arranged outside the discharging hole, and an opening and closing door is also arranged on the rear cabin.
As a further preferable scheme, a preheating water tank is arranged in the front cabin; a cooling bin is arranged outside the rear cabin and is communicated with the rear cabin, a cold water spray head is arranged at the upper part in the cooling bin, a water collecting tank is arranged at the lower part in the cooling bin, and a net rack is arranged on the water collecting tank; a hot water pipe is arranged between the preheating water tank and the water collecting tank, and a cold water pipe is arranged between the preheating water tank and the cold water spray header.
As a further preferable scheme, the edges of the first supporting plate, the second supporting plate and the third supporting plate are provided with rollers, and the rollers roll along the inner wall of the furnace body.
As a further preferable scheme, the side wall of the furnace body is provided with three longitudinal channels, three lifting rods are respectively positioned in one longitudinal channel, the three lifting rods rotate in the respective longitudinal channel, and the areas of the first supporting plate, the second supporting plate and the third supporting plate are the same as the area of the cross section of the furnace body.
As a further preferable scheme, a plurality of placing grooves for placing the reaction kettle are respectively arranged on the first supporting plate, the second supporting plate and the third supporting plate.
Compared with the prior art, the invention discloses a semi-continuous anti-clogging subcritical/supercritical reaction heating device, which can process mixed or single biomass with various concentrations, load raw materials into sub-reaction kettles, and realize approximately continuous feeding and discharging; in addition, the large reactor is decomposed into the small reaction kettles, the operation is relatively safe, and if one small reaction kettle leaks, the heating of other reactors is not influenced.
drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the furnace body;
The device comprises a furnace body 1, a feed inlet 2, a discharge outlet 3, a first supporting plate 4, a second supporting plate 5, a third supporting plate 6, a groove 7, a lifting rod 8, an inserting piece 9, a front cabin 10, a rear cabin 11, a preheating water tank 12, a cooling cabin 13, a cold water spray header 14, a hot water pipe 15, a cold water pipe 16, a roller 17 and a longitudinal channel 18.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention relates to a semi-continuous anti-blocking subcritical/supercritical reaction heating device which comprises a hollow furnace body 1, wherein the hollow structure of the furnace body 1 is a cuboid, a feed inlet 2 and a discharge outlet 3 are respectively arranged on the lower side and the upper side of the furnace body 1, and the feed inlet 2 and the discharge outlet 3 are positioned in two directions of the furnace body 1 and are respectively positioned on the short sides of the cuboid structure of the furnace body 1; be equipped with first layer board 4, second layer board 5, third layer board 6 from last to down in proper order in the furnace body 1, first layer board 4, second layer board 5, third layer board 6 are the rectangle structure, and first layer board 4, second layer board 5, third layer board 6 are parallel to each other and equidistant, and reation kettle places on first layer board 4, second layer board 5, third layer board 6.
The furnace body lifting device comprises a first supporting plate 4, a second supporting plate 5 and a third supporting plate 6, wherein three grooves 7 are formed in one long side face of the same side of the third supporting plate 6 respectively, the three grooves 7 are located at the center of the position close to the long side, three lifting rods 8 are arranged on the side, one lifting rod 8 corresponds to the grooves 7 of the positions of the three supporting plates, inserting pieces 9 are arranged at the bottoms of the lifting rods 8, the upper parts of the three lifting rods 8 penetrate through the top of the furnace body 1, the inserting pieces 9 can be screwed into the grooves 7 of the positions of the three supporting plates after the lifting rods 8 rotate, the lifting rods 8 can be pulled up and down, any supporting plate can be pulled up and down, the first supporting plate 4, the second supporting plate 5 and the third supporting plate 6 can lift in the furnace body 1, the first supporting plate 4, the second supporting plate 5 and the third supporting plate 6 can take out the furnace body 1 from a discharge port 3.
After the lifting rod 8 is drawn to a proper height, the part of the lifting rod 8 outside the furnace body 1 is fixed by using a locking mechanism at the upper part of the furnace body 1.
when the furnace body is used, the first supporting plate 4 is placed into the furnace body 1 from the feeding hole 2, the first lifting rod 8 is rotated, the inserting piece 9 of the lifting rod 8 is rotated into the groove 7 of the first supporting plate 4, then the lifting rod 8 is lifted up, and the furnace body is fixed by the locking mechanism after reaching a certain height; then, a second supporting plate 5 is placed into the furnace body 1 from the feeding hole 2, a second lifting rod 8 is rotated, so that the inserting pieces 9 of the lifting rod 8 are rotated into the grooves 7 of the second supporting plate 5, then the lifting rod 8 is lifted up, and a locking mechanism is used for fixing after the lifting rod reaches a certain height; finally, a third supporting plate 6 is placed into the furnace body 1 from the feeding hole 2, a third lifting rod 8 is rotated to enable an inserting piece 9 of the lifting rod 8 to be rotated into a groove 7 of the third supporting plate 6, then the lifting rod 8 is lifted up, and a locking mechanism is used for fixing after the lifting rod reaches a certain height; the furnace body 1 is heated, after the heating is finished, the first supporting plate 4 is taken out from the discharge hole 3, the lifting rod 8 of the first supporting plate 4 is rotated reversely, the inserting piece 9 is screwed out of the groove 7 of the first supporting plate 4, the lifting rod 8 can reach the bottom of the furnace body 1 again, and the second supporting plate 5 and the third supporting plate 6 are operated in the same way, so that the heating mode is fixed.
Or a continuous heating mode can be adopted, the first supporting plate 4 is sequentially placed into the furnace body 1, the first lifting rod 8 is used for lifting to a proper position for fixing, the second supporting plate 5 is placed into the furnace body 1, the second lifting rod 8 is used for lifting to a proper position for fixing, the third supporting plate 6 is placed into the furnace body 1, the third lifting rod 8 is used for lifting to a proper position for fixing, the furnace body 1 keeps heating work in the process, then the first supporting plate 4 is taken out from the discharge hole 3, the reaction kettle on the first supporting plate 4 is taken away, the first lifting rod 8 which fixes the first supporting plate is lowered to the bottom of the furnace body 1 again, then the second supporting plate 5 and the third supporting plate 6 are respectively lifted, then the first supporting plate 4 is placed on the reaction kettle to be heated, and then the reaction kettle is placed into the furnace body 1 from the feeding hole 2, and by adopting the mode, the second supporting plate 5 and the third supporting plate 6 are sequentially taken out to form continuous heating and taking-out actions.
A closed front cabin 10 is arranged outside the feeding hole 2, an opening and closing door is arranged on the front cabin 10, a closed rear cabin 11 is arranged outside the discharging hole 3, an opening and closing door is also arranged on the rear cabin 11, and a preheating water tank 12 is arranged in the front cabin 10; a cooling bin 13 is arranged outside the rear cabin 11, the cooling bin 13 is communicated with the rear cabin 11, a cold water spray header 14 is arranged at the upper part in the cooling bin 13, a water collecting tank is arranged at the lower part, a net rack is arranged on the water collecting tank, and the heated reaction kettle can be placed on the net rack for cooling; a hot water pipe 15 is arranged between the preheating water tank 12 and the water collecting tank, and a cold water pipe 16 is arranged between the preheating water tank 12 and the cold water spray header 14; during the use, water gets into cold water shower head 14 from cold water pipe 16, sprays the cooling to the reation kettle of heating in cooling bin 13, the cooling water is taken away the heat and is fallen into the water catch bowl, transmit to preheating water tank 12 from hot-water line 15 again, preheat the reation kettle who does not heat in preheating water tank 12, release thermal water gets into cold water shower head 14 by cold water pipe 16 again, wherein, all be equipped with the water pump on hot-water line 15 and the cold water pipe 16, the material is heated more evenly like this, also the energy can be saved, heating efficiency is improved.
In order to improve the stability of the first supporting plate 4, the second supporting plate 5 and the third supporting plate 6 during up-down lifting, idler wheels 17 are arranged at the edges of the first supporting plate 4, the second supporting plate 5 and the third supporting plate 6, the idler wheels 17 roll along the inner wall of the furnace body 1, and if the temperature in the furnace body 1 is lower than 300 degrees, the idler wheels 17 can be made of flexible materials, so that the supporting plates can not be seriously inclined in the lifting process, the lifting is kept smooth, and the vibration can be reduced.
Correspondingly, a plurality of placing grooves for placing the reaction kettle can be respectively arranged on the first supporting plate 4, the second supporting plate 5 and the third supporting plate 6, and the reaction kettle can not slide in the placing grooves because of the inclination of the supporting plates.
Because the three lifting rods 8 need to rotate to drive the inserting pieces 9 to be screwed into and out of the grooves 7, under the conventional condition, a certain distance is needed between the inner wall of the furnace body 1 and the supporting plate to allow the lifting rods 8 to operate, but the size of the furnace body 1 is increased, the heat supply amount is increased, and the stability of the lifting of the supporting plate is not facilitated, so that three longitudinal channels 18 are formed in the side wall of the furnace body 1, the three lifting rods 8 are respectively positioned in one longitudinal channel 18, the three lifting rods 8 rotate in the respective longitudinal channels 18, the areas of the first supporting plate 4, the second supporting plate 5 and the third supporting plate 6 are kept to be the same as the cross section area of the furnace body 1, the size of the furnace body 1 is greatly reduced, the restriction effect on each supporting plate is also strengthened, the supporting plates are not easy to shake greatly, and the supporting plates can.
In practical application, the number of the supporting plates of the heating device is not limited to three, and correspondingly, a plurality of grooves 7 can be formed in the edge of the bracket, and more lifting rods 8 can be added to realize a larger number of continuous reaction modes.
The reaction device has the greatest characteristic of semicontinuous high-temperature and high-pressure reaction and is not easy to block. The vertical heating furnace is adopted, and the feeding and the discharging can be realized simultaneously after the number of the small reaction kettles is adjusted according to the reaction period, and the continuous flow reaction device can be similar to a continuous flow reaction device.
Near continuous flow can solve the problem of batch reactor inefficiency. Compared with a continuous flow reaction tube, the cross section of a reaction vessel of the small reaction kettle is increased, the problem that the continuous reactor is easy to block can be solved, materials with higher concentration can be treated by the small reaction kettle, the requirements on the thickness and the strength of raw materials when the large reaction kettle is used under the conditions of high temperature and high pressure are met, the operation is relatively safe, and if one small reaction kettle leaks, the heating of other reactors is not influenced. And the production scale can be controlled by the size and the number of the small reaction kettles, and the method has great flexibility. The device can effectively prevent heat loss through the arrangement of the front cabin and the rear cabin. The reaction device is provided with a heat recovery and preheating system (a cold water cooling and preheating water tank), so that the materials can be heated more uniformly, the preheated materials can reach the set high-temperature and high-pressure reaction conditions more easily, and the yield of the target product can be greatly improved due to the stability of the reaction conditions.
The vertical heating is mainly operated mechanically, so that a continuous discharging system is better formed.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. a semi-continuous anti-clogging subcritical/supercritical reaction heating device is characterized in that: the furnace comprises a hollow furnace body (1), wherein the hollow structure of the furnace body (1) is a cuboid, and a feed port (2) and a discharge port (3) are respectively arranged on the lower side and the upper side of the furnace body (1);
A first supporting plate (4), a second supporting plate (5) and a third supporting plate (6) are sequentially arranged in the furnace body (1) from top to bottom, and the first supporting plate (4), the second supporting plate (5) and the third supporting plate (6) are all rectangular structures;
Three grooves (7) are respectively formed in one long side face of the first supporting plate (4), the second supporting plate (5) and the third supporting plate (6) on the same side, the three grooves (7) are all located close to the center of the long side, three lifting rods (8) are arranged on the side, one lifting rod (8) corresponds to one groove (7), inserting pieces (9) are arranged at the bottoms of the lifting rods (8), the upper portions of the three lifting rods (8) penetrate through the top of the furnace body (1), and the inserting pieces (9) can be screwed into the grooves (7) after the lifting rods (8) rotate;
The top of the furnace body (1) is provided with a locking mechanism for fixing the lifting rod (8).
2. The semi-continuous anti-clogging subcritical/supercritical reaction heating apparatus according to claim 1, characterized in that: the feed inlet (2) is externally provided with a closed front cabin (10), the front cabin (10) is provided with an opening and closing door, the discharge outlet (3) is externally provided with a closed rear cabin (11), and the rear cabin (11) is also provided with an opening and closing door.
3. A semi-continuous anti-clogging sub/supercritical reaction heating apparatus according to claim 1 or 2, characterized in that: a preheating water tank (12) is arranged in the front cabin (10); a cooling bin (13) is arranged outside the rear cabin (11), the cooling bin (13) is communicated with the rear cabin (11), a cold water spray header (14) is arranged at the upper part in the cooling bin (13), a water collecting tank is arranged at the lower part, and a net rack is arranged on the water collecting tank; a hot water pipe (15) is arranged between the preheating water tank (12) and the water collecting tank, and a cold water pipe (16) is arranged between the preheating water tank (12) and the cold water spray header (14).
4. The semi-continuous anti-clogging subcritical/supercritical reaction heating apparatus according to claim 1, characterized in that: the edge of the first supporting plate (4), the second supporting plate (5) and the third supporting plate (6) is provided with a roller (17), and the roller (17) rolls along the inner wall of the furnace body (1).
5. The semi-continuous anti-clogging subcritical/supercritical reaction heating apparatus according to claim 1, characterized in that: the side wall of the furnace body (1) is provided with three longitudinal channels (18), the three lifting rods (8) are respectively positioned in one longitudinal channel (18), the three lifting rods (8) rotate in the respective longitudinal channel (18), and the areas of the first supporting plate (4), the second supporting plate (5) and the third supporting plate (6) are the same as the cross section area of the furnace body (1).
6. the semi-continuous anti-clogging subcritical/supercritical reaction heating apparatus according to claim 1, characterized in that: the first supporting plate (4), the second supporting plate (5) and the third supporting plate (6) are respectively provided with a plurality of placing grooves for placing the reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898848.3A CN110559959A (en) | 2019-09-23 | 2019-09-23 | Semi-continuous anti-blocking subcritical/supercritical reaction heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898848.3A CN110559959A (en) | 2019-09-23 | 2019-09-23 | Semi-continuous anti-blocking subcritical/supercritical reaction heating device |
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| Publication Number | Publication Date |
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| CN110559959A true CN110559959A (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910898848.3A Pending CN110559959A (en) | 2019-09-23 | 2019-09-23 | Semi-continuous anti-blocking subcritical/supercritical reaction heating device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118111A (en) * | 2007-08-31 | 2008-02-06 | 侯仁义 | Multiple layer synthesis furnace device |
| CN202304302U (en) * | 2011-09-15 | 2012-07-04 | 上海集惠环保科技发展有限公司 | Vertical drying furnace |
| CN104007004A (en) * | 2014-05-09 | 2014-08-27 | 洛阳凯美胜石化设备有限公司 | Suspended rotary catalyst ageing oven |
| CN203833970U (en) * | 2014-05-22 | 2014-09-17 | 浙江国邦钢业有限公司 | Natural gas annealing furnace |
| KR20160069889A (en) * | 2014-12-09 | 2016-06-17 | 정진희 | boiler |
| CN210875261U (en) * | 2019-09-23 | 2020-06-30 | 盐城工学院 | Semi-continuous anti-blocking subcritical/supercritical reaction heating device |
-
2019
- 2019-09-23 CN CN201910898848.3A patent/CN110559959A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118111A (en) * | 2007-08-31 | 2008-02-06 | 侯仁义 | Multiple layer synthesis furnace device |
| CN202304302U (en) * | 2011-09-15 | 2012-07-04 | 上海集惠环保科技发展有限公司 | Vertical drying furnace |
| CN104007004A (en) * | 2014-05-09 | 2014-08-27 | 洛阳凯美胜石化设备有限公司 | Suspended rotary catalyst ageing oven |
| CN203833970U (en) * | 2014-05-22 | 2014-09-17 | 浙江国邦钢业有限公司 | Natural gas annealing furnace |
| KR20160069889A (en) * | 2014-12-09 | 2016-06-17 | 정진희 | boiler |
| CN210875261U (en) * | 2019-09-23 | 2020-06-30 | 盐城工学院 | Semi-continuous anti-blocking subcritical/supercritical reaction heating device |
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Address after: No.1, Middle Road, hope Avenue, Yancheng City, Jiangsu Province Applicant after: YANCHENG INSTITUTE OF TECHNOLOGY Address before: 224599 building, 1166 Century Avenue, Jiangsu, Yancheng City Applicant before: YANCHENG INSTITUTE OF TECHNOLOGY |