CN105536446A - Gas-liquid cocurrent type waste gas absorption treatment system and method - Google Patents
Gas-liquid cocurrent type waste gas absorption treatment system and method Download PDFInfo
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- CN105536446A CN105536446A CN201610130127.4A CN201610130127A CN105536446A CN 105536446 A CN105536446 A CN 105536446A CN 201610130127 A CN201610130127 A CN 201610130127A CN 105536446 A CN105536446 A CN 105536446A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
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Abstract
The invention relates to the technical field of metallurgical and chemical industry and discloses a gas-liquid concurrent type waste gas absorption treatment system and method. The system comprises a concurrent contact purification device and a cooling device, wherein the concurrent contact purification device comprises a gas storage bag, a primary purification section and a hot liquid pool, the gas storage bag is provided with a waste gas inlet, and a waste gas cooling mechanism is arranged in the gas storage bag; the cooling device comprises a secondary purification section and a cold liquid pool, an exhaust port is formed above the secondary purification section, and the cooling device is provided with a cooling and refrigerating mechanism; the bottom of the primary purification section is communicated with the bottom of the secondary purification section through a communicating pipe, the cold liquid pool is connected with a cold liquid delivery pipe through a cold liquid pump, and the hot liquid pool is connected with a first hot liquid delivery pipe through a hot liquid pump. According to the principle that hot gas rises and cold gas declines, concurrent contact absorption of an absorption liquid and gas is realized, the gas-liquid contact time is prolonged, the purification depth of the waste gas is increased, the gas can be cooled repeatedly, and the temperature of treated gas is decreased.
Description
Technical field
The present invention relates to chemical metallurgy technical field, especially a kind of gas-liquid is with tropism's waste gas absorption treatment system and method.
Background technology
Metal V and its compounds has a wide range of applications, more and more fierce along with market competition, environmental requirement is more and more higher, and factor, how high clean being processed in order to a urgent problem of waste gas such as market competition is more and more fierce.
As everyone knows, the improvement of current waste gas, according to the character of waste gas, mainly contains five kinds: the pollutant component in liquid phase scrubbing gas phase; Pollutant component in solid phase adsorption gas phase, the pollutant component in interception gas phase is fixed in liquid-solid two-phase acting in conjunction, and gas phase and gas phase are reacted under given conditions and used cloth bag to tackle solid dust particle in gas phase.This class of pollutant component that what the present invention related generally to is in liquid phase scrubbing gas phase, and the waste gas that such waste gas refers generally to acid mist, alkali mist, pollutant are soluble in solvent and pollutant easily and solvent react and be fixed on the waste gas in solvent.
For content of the present invention, do the background introduction of an illustrative with regard to acid mist process:
The process of domestic and international acid mist at present, what all adopt is that reverse property gas-liquid intersection counter current contact absorption pattern processes, and when precipitating vanadium extraction operation, just relates to the improvement of the type acid mist.Vanadium liquid adds the concentrated sulfuric acid when precipitating, and carries out steam boiling heating and stir, and under this just makes high-temperature condition, produces and carries the steam of sulfuric acid droplets in a large number, form acid mist, the treating apparatus of this acid mist as shown in Figure 1,
Its waste gas treatment process is as follows:
It to be input into pipe from acid mist by pump and to be conveyed into bottom acid mist treatment device by acid mist, then carries from bottom to top in acid mist treatment device; It to be input into pipe from liquid absorbent by pump and to be conveyed into acid mist treatment device top by liquid absorbent (water), then falls by self gravitation from top to bottom in acid mist treatment device; Acid mist contacts in the gas-liquid conversed zone of intersection with water, especially upper contact sphere carries out the absorption of pollutant in acid mist, to be absorbed complete after, gas phase after acid mist purifying continues upwards to walk, then directly emptying, liquid phase after acid mist purifying drops to bottom acid mist treatment device by self gravitation, extracted out by pump and be then input into pipe from liquid absorbent and be again conveyed in acid mist treatment device, recycle, standard as not up to standard in liquid absorbent result of use, then export and carry out processing or recycling in acid mist treatment device.
The processing procedure of the acid mist that precipitation vanadium extraction operation produces and acid mist substantially represent the gas-liquid conversed improvement principle of the type waste gas both at home and abroad at present, but this administering method exists following problem:
1. the exhaust-gas treatment degree of depth is inadequate, and the pollutant in general waste gas only can purify 65%---75%, even lower, and this is relevant with waste gas self property: one waste gas self belongs to gas phase, in emission-control equipment, and spontaneous the walking from bottom to top of meeting; Its two: waste gas generally has 95 DEG C---150 DEG C, and the waste gas of heat movement velocity from bottom to top in emission-control equipment is faster; Its three emission-control equipments bottom for gas phase is sealing state, so waste gas blasts by pump, just adds the pressure of gas phase, thus again accelerates its motion from bottom to top; Generally speaking generally, the time of staying of waste gas in the emission-control equipment of reverse improvement principle, namely liquid absorbent absorbs the time only 3 ~ 5s of pollutant in waste gas.
2. contaminative still exists, because its pollutant has only processed less than 75%, so still there is the pollutant of more than 25% to be exhausted in air.
3. pollution level directly perceived is large, because EGT is higher, even if having certain cooling by emission-control equipment, but the emptying gas phase temperature after purification generally still has 80 DEG C, the class cigarette emission that formation one is vaporific so this purified gas is met, people can be felt, and pollution level is actual larger.
4. liquid absorbent is recycle due to what adopt, and as do not increased cooling infrastructure, then this liquid absorbent temperature can constantly increase, thus reduces its pollutant assimilation effect greatly, reduces the clean-up effect of waste gas.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of gas-liquid with tropism's waste gas absorption treatment system, and this system can extend the time of contact of gas-liquid two-phase, improves the purification degree of depth of waste gas.
Gas-liquid disclosed by the invention, with tropism's waste gas absorption treatment system, comprises and contacts purifier and cooling device in the same way;
The described purifier that contacts in the same way comprises hydrothermal solution pond, primary purification section and airtight gas storage bag, described gas storage bag is provided with exhaust gas inlet, waste gas cooling body is provided with in described gas storage bag, described primary purification section is connected to below gas storage bag, be provided with packing layer in described primary purification section, described hydrothermal solution pond is arranged at below primary purification section;
Described cooling device comprises double purification section and cold liquid pool, is provided with exhaust outlet above described double purification section, and described cold liquid pool is arranged at below double purification section, and described cooling device is provided with heat radiation refrigeration mechanism;
The bottom of described primary purification section is connected by the bottom of communicating pipe with double purification section, described cold liquid pool is connected with cold liquid carrier pipe by condenser pump, described cold liquid carrier pipe extends to primary purification section top, described hydrothermal solution pond is connected with the first hydrothermal solution carrier pipe by hydrothermal solution pump, and described first hydrothermal solution carrier pipe extends to double purification section top.
Preferably, described waste gas cooling body is heat exchange endless tube, and described heat exchange endless tube one end is connected with cold liquid carrier pipe, and the other end is connected with the second hydrothermal solution carrier pipe, and described second hydrothermal solution carrier pipe extends to double purification section top.
Preferably, described packing layer comprise some contact balls with for supporting the gripper shoe contacting ball, described gripper shoe be arranged at contact ball below.
Preferably, the described packing layer number of plies is 2 ~ 5 layers.
Preferably, described heat radiation refrigeration mechanism comprises the fan being arranged at double purification section top.
Preferably, described heat radiation refrigeration mechanism also comprises the thermantidote for blasting cold air, and described thermantidote is arranged on double purification section sidewall.
Preferably, at least one deck liquid dispersion plate is provided with in described double purification section.
Preferably, the exhaust outlet of described double purification section inwardly shrinks formation pyramidal structure.
Preferably, described exhaust gas inlet is connected with the waste gas pump for blasting waste gas.
The invention also discloses and a kind ofly adopt described gas-liquid with the waste gas absorption method of tropism's waste gas absorption treatment system, comprise the steps:
The heat radiation refrigeration mechanism of a, startup cooling device, open the waste gas cooling body in gas storage bag, start condenser pump, absorbing liquid in cold liquid pool is led to supercooled liquid carrier pipe to extract to primary purification section top spray, absorbing liquid falls in hydrothermal solution pond after packed layer, start hydrothermal solution pump, absorbing liquid in hydrothermal solution pond is delivered to double purification section top spray;
B, input hot waste gas to be clean to gas storage bag, slowly being declined by the waste gas of the waste gas cooling body cooling in gas storage bag enters primary purification section, and at primary purification section packing layer, waste gas and cold absorbing liquid realize contacting in the same way and absorb and carry out cooling twice;
C, waste gas after contacting purifier primary purification are in the same way by bottom the double purification section that is delivered to cooling device communicating pipe, in double purification section, waste gas heat radiation refrigeration mechanism with from contact in the same way purifier and come absorbing liquid acting in conjunction under, carry out third time cooling and second time purification, gas after process is discharged by exhaust outlet, falls to cold liquid pool collect by the cooled absorbing liquid of heat radiation refrigeration mechanism.
The invention has the beneficial effects as follows: present invention utilizes hot gas and rise, the principle that cold air declines, in gas storage bag, cooling is carried out to waste gas, absorption is contacted in the same way with top-down waste gas at primary purification section absorbing liquid, and cooling twice is carried out to it, greatly extend the time of contact of gas-liquid two-phase, improve the purification degree of depth of waste gas, make waste gas enter bottom it in cooling device simultaneously, complete the second time purification to waste gas and third time cooling, thus guarantee exhaust-gas treatment effect, compared with prior art, gas-liquid contact time of the present invention can be increased to 100 ~ 150s by 3 ~ 5s, the purification degree of depth of waste gas can bring up to more than 99% by 65% ~ 75%, after process, the temperature of gas phase drops to 35 DEG C by 80 DEG C.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of prior art;
Fig. 2 is schematic diagram of the present invention;
Reference numeral: cooling device 1, cold liquid pool 101, double purification section 102, exhaust outlet 103,, fan 104, thermantidote 105, liquid dispersion plate 106, contact purifier 2 in the same way, hydrothermal solution pond 201, primary purification section 202, gas storage bag 203, gripper shoe 204, contact ball 205, heat exchange endless tube 206, exhaust gas inlet 207, communicating pipe 3, condenser pump 4, cold liquid carrier pipe 401, hydrothermal solution pump 5, first hydrothermal solution carrier pipe 501, second hydrothermal solution carrier pipe 502, waste gas pump 6.
The large arrow of Fig. 1 hollow core represent waste gas streams to, solid small arrow represents that absorbing liquid flows to;
The large arrow of Fig. 2 hollow core represent waste gas streams to, hollow small arrow represents that cold absorbing liquid flows to, and solid small arrow represents that heat absorption liquid flows to.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 2, gas-liquid disclosed by the invention, with tropism's waste gas absorption treatment system, comprises and contacts purifier 2 and cooling device 1 in the same way;
The described purifier 2 that contacts in the same way comprises hydrothermal solution pond 201, primary purification section 202 and airtight gas storage bag 203, described gas storage bag 203 is provided with exhaust gas inlet 207, waste gas cooling body is provided with in described gas storage bag 203, described primary purification section 202 is connected to below gas storage bag 203, be provided with packing layer in described primary purification section 202, described hydrothermal solution pond 201 is arranged at below primary purification section 202;
Described cooling device 1 comprises double purification section 102 and cold liquid pool 101, is provided with exhaust outlet 103 above described double purification section 102, and described cold liquid pool 101 is arranged at below double purification section 102, and described cooling device 1 is provided with heat radiation refrigeration mechanism;
The bottom of described primary purification section 202 is connected by the bottom of communicating pipe 3 with double purification section 102, described cold liquid pool 101 is connected with cold liquid carrier pipe 401 by condenser pump 4, described cold liquid carrier pipe 401 extends to primary purification section 202 top, described hydrothermal solution pond 201 is connected with the first hydrothermal solution carrier pipe 501 by hydrothermal solution pump 5, and described first hydrothermal solution carrier pipe 501 extends to double purification section 102 top.
Adopt this gas-liquid with the waste gas absorption method of tropism's waste gas absorption treatment system, comprise the steps:
A, start the heat radiation refrigeration mechanism of cooling device 1, open the waste gas cooling body in gas storage bag 203, start condenser pump 4, absorbing liquid in cold liquid pool 101 being led to supercooled liquid carrier pipe 401 extracts to primary purification section 202 top spray, absorbing liquid falls in hydrothermal solution pond 201 after packed layer, certain absorption liquid measure will be guaranteed in hydrothermal solution pond, prepare for realizing secondary waste gas purification, after system starts, start hydrothermal solution pump 5, absorbing liquid in hydrothermal solution pond 201 is delivered to double purification top spray, from hydrothermal solution pond, the unit interval pumps to the absorption liquid measure of double purification section and is equal from the absorption liquid measure that the cold liquid pool unit interval pumps to primary purification section,
B, input hot waste gas to be clean to gas storage bag, slowly declined by the waste gas of the waste gas cooling body cooling in gas storage bag 203 and enter primary purification section 202, at primary purification section 202 packing layer, the cold absorbing liquid that waste gas and self cooling liquid pool 101 are carried realizes contacting in the same way and absorbs and carry out cooling twice, this step can realize 96% of waste gas purification, because gas storage bag 203 is in a high position, therefore, waste gas pump 6 or blower fan is usually needed to arrange in order to blast waste gas;
C, waste gas after contacting purifier 2 primary purification are in the same way by bottom the double purification section 102 that is delivered to cooling device 1 communicating pipe 3, in double purification section 102, waste gas heat radiation refrigeration mechanism with from contact in the same way purifier 2 and come the acting in conjunction of heat absorption liquid under, carry out third time cooling and second time purification, gas after process is discharged by exhaust outlet 103, fall to cold liquid pool 101 by the cooled absorbing liquid of heat radiation refrigeration mechanism to collect, this step can realize 4% of waste gas purification.
The waste gas cooling body Main Function being positioned at gas storage bag 203 is cooled by hot waste gas, make its downward sedimentation, for avoiding gas disturbance excessive, usually the device such as cooling tube, cooling water tank can be adopted, and as preferred embodiment, described waste gas cooling body is heat exchange endless tube 206, described heat exchange endless tube 206 one end is connected with cold liquid carrier pipe 401, the other end is connected with the second hydrothermal solution carrier pipe 502, and described second hydrothermal solution carrier pipe 502 extends to double purification section 102 top.The cold absorbing liquid adopting heat exchange endless tube 206 that cold liquid pool 101 can be utilized to send and waste gas carry out heat exchange, thus waste gas is cooled, and the heat absorption liquid after being heated by waste gas returns cooling device 1 via the second hydrothermal solution carrier pipe 502, spray together with the heat absorption liquid returned from hydrothermal solution pond 201 at double purification section 102 top, for carrying out second time purification to waste gas.In absorbing liquid spray dropping process, by heat radiation refrigeration mechanism, it is cooled, then fall into cold liquid pool 101 and be collected, thus achieve recycling of absorbing liquid.When absorbing liquid reaches certain life cycle, concentration and effect, according to environmental requirement, absorbing liquid replaced, process or recycling.
The effect of packing layer increases gas-liquid two-phase contact area, to improve the clean-up effect of waste gas.The filler of packing layer can adopt Raschig ring, Pall ring etc., and as preferred embodiment, described packing layer comprise some contact balls 205 with for supporting the gripper shoe 204 contacting ball 205, described gripper shoe 204 is arranged at below contact ball 205.The described packing layer number of plies is preferably 2 ~ 5 layers.
The Main Function being arranged at the heat radiation refrigeration mechanism in cooling device 1 is the absorbing liquid of the heat of cooling, absorbing liquid from top to bottom spray and under, therefore according to cooling tube form, then contact area is limited, cooling effect is not obvious, thus as preferred embodiment, described heat radiation refrigeration mechanism comprises the fan 104 being arranged at double purification section 102 top.Increase air-flow velocity by fan 104, the object of heat of cooling absorbing liquid can be played.For strengthening cooling effect, as preferred embodiment, described heat radiation refrigeration mechanism also comprises the thermantidote 105 for blasting cold air, and described thermantidote 105 is arranged on double purification section 102 sidewall.
For making absorbing liquid can purifying exhaust air better in double purification section 102, as preferred embodiment, in described double purification section 102, be provided with at least one deck liquid dispersion plate 106.Liquid dispersion plate 106 can increase the diffusional area of cooling fluid, thus accelerates the cooling velocity of heat absorption liquid and strengthen secondary contact clean-up effect.
For preventing absorbing liquid drop from being taken out of cooling device 1 by air-flow, as preferred embodiment, as shown in Figure 2, the exhaust outlet 103 of described double purification section 102 inwardly shrinks and forms pyramidal structure.
Claims (10)
1. gas-liquid is with tropism's waste gas absorption treatment system, it is characterized in that: comprise and contact purifier (2) and cooling device (1) in the same way;
The described purifier (2) that contacts in the same way comprises hydrothermal solution pond (201), primary purification section (202) and airtight gas storage bag (203), described gas storage bag (203) is provided with exhaust gas inlet (207), waste gas cooling body is provided with in described gas storage bag (203), described primary purification section (202) is connected to gas storage bag (203) below, be provided with packing layer in described primary purification section (202), described hydrothermal solution pond (201) is arranged at primary purification section (202) below;
Described cooling device (1) comprises double purification section (102) and cold liquid pool (101), described double purification section (102) top is provided with exhaust outlet (103), described cold liquid pool (101) is arranged at double purification section (102) below, and described cooling device (1) is provided with heat radiation refrigeration mechanism;
The bottom of described primary purification section (202) is connected by the bottom of communicating pipe (3) with double purification section (102), described cold liquid pool (101) is connected with cold liquid carrier pipe (401) by condenser pump (4), described cold liquid carrier pipe (401) extends to primary purification section (202) top, described hydrothermal solution pond (201) is connected with the first hydrothermal solution carrier pipe (501) by hydrothermal solution pump (5), and described first hydrothermal solution carrier pipe (501) extends to double purification section (102) top.
2. gas-liquid as claimed in claim 1 is with tropism's waste gas absorption treatment system, it is characterized in that: described waste gas cooling body is heat exchange endless tube (206), described heat exchange endless tube (206) one end is connected with cold liquid carrier pipe (401), the other end is connected with the second hydrothermal solution carrier pipe (502), and described second hydrothermal solution carrier pipe (502) extends to double purification section (102) top.
3. gas-liquid as claimed in claim 1 is with tropism's waste gas absorption treatment system, it is characterized in that: described packing layer comprise some contact balls (205) with for supporting the gripper shoe (204) contacting ball (205), described gripper shoe (204) be arranged at contact ball (205) below.
4. gas-liquid as claimed in claim 3 is with tropism's waste gas absorption treatment system, it is characterized in that: the described packing layer number of plies is 2 ~ 5 layers.
5. gas-liquid as claimed in claim 1 is with tropism's waste gas absorption treatment system, it is characterized in that: described heat radiation refrigeration mechanism comprises the fan (104) being arranged at double purification section (102) top.
6. gas-liquid as claimed in claim 5 is with tropism's waste gas absorption treatment system, it is characterized in that: described heat radiation refrigeration mechanism also comprises the thermantidote (105) for blasting cold air, and described thermantidote (105) is arranged on double purification section (102) sidewall.
7. gas-liquid as claimed in claim 1 is with tropism's waste gas absorption treatment system, it is characterized in that: be provided with at least one deck liquid dispersion plate (106) in described double purification section (102).
8. gas-liquid as claimed in claim 1 is with tropism's waste gas absorption treatment system, it is characterized in that: the exhaust outlet (103) of described double purification section (102) inwardly shrinks and forms pyramidal structure.
9. gas-liquid as claimed in claim 1 is with tropism's waste gas absorption treatment system, it is characterized in that: described exhaust gas inlet (207) is connected with the waste gas pump for blasting waste gas.
10. adopt gas-liquid as claimed in claim 1 with the waste gas absorption method of tropism's waste gas absorption treatment system, to it is characterized in that, comprise the steps:
The heat radiation refrigeration mechanism of a, startup cooling device (1), open the waste gas cooling body in gas storage bag (203), start condenser pump (4), absorbing liquid in cold liquid pool (101) is led to supercooled liquid carrier pipe (401) to extract to primary purification section (202) top spray, absorbing liquid falls in hydrothermal solution pond (201) after packed layer, start hydrothermal solution pump (5), hydrothermal solution pond (201) interior absorbing liquid is delivered to double purification section (102) top spray;
B, input hot waste gas to be clean to gas storage bag (203), slowly declined by the waste gas of the waste gas cooling body cooling in gas storage bag (203) and enter primary purification section (202), at primary purification section (202) packing layer, waste gas and cold absorbing liquid realize contacting in the same way and absorb and carry out cooling twice;
C, waste gas after contacting purifier (2) primary purification are in the same way by being delivered to double purification section (102) bottom of cooling device (1) communicating pipe (3), in double purification section (102), under the absorbing liquid acting in conjunction that waste gas contacts purifier (2) at heat radiation refrigeration mechanism in the same way with oneself and comes, carry out third time cooling and second time purification, gas after process is discharged by exhaust outlet (103), falls to cold liquid pool (101) collect by the cooled absorbing liquid of heat radiation refrigeration mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130127.4A CN105536446A (en) | 2016-03-08 | 2016-03-08 | Gas-liquid cocurrent type waste gas absorption treatment system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610130127.4A CN105536446A (en) | 2016-03-08 | 2016-03-08 | Gas-liquid cocurrent type waste gas absorption treatment system and method |
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| CN105536446A true CN105536446A (en) | 2016-05-04 |
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| CN201610130127.4A Pending CN105536446A (en) | 2016-03-08 | 2016-03-08 | Gas-liquid cocurrent type waste gas absorption treatment system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112262001A (en) * | 2018-06-13 | 2021-01-22 | 株式会社加来野制作所 | Pyrolysis device |
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| CN2430209Y (en) * | 1999-10-23 | 2001-05-16 | 刘平 | Low resistance recovery method smoke desuphurizing device |
| CN102794103A (en) * | 2012-09-04 | 2012-11-28 | 中电投远达环保工程有限公司 | Double circulation U-shaped tower desulfurization system and process |
| CN105597506A (en) * | 2015-11-26 | 2016-05-25 | 攀钢集团攀枝花钢钒有限公司 | Waste gas treatment system |
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2016
- 2016-03-08 CN CN201610130127.4A patent/CN105536446A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2430209Y (en) * | 1999-10-23 | 2001-05-16 | 刘平 | Low resistance recovery method smoke desuphurizing device |
| CN102794103A (en) * | 2012-09-04 | 2012-11-28 | 中电投远达环保工程有限公司 | Double circulation U-shaped tower desulfurization system and process |
| CN105597506A (en) * | 2015-11-26 | 2016-05-25 | 攀钢集团攀枝花钢钒有限公司 | Waste gas treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112262001A (en) * | 2018-06-13 | 2021-01-22 | 株式会社加来野制作所 | Pyrolysis device |
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Application publication date: 20160504 |