CN112495069A - Foam catching device for purifying liquid sulfur foams in hydrogen sulfide gas - Google Patents
Foam catching device for purifying liquid sulfur foams in hydrogen sulfide gas Download PDFInfo
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- CN112495069A CN112495069A CN202011312741.5A CN202011312741A CN112495069A CN 112495069 A CN112495069 A CN 112495069A CN 202011312741 A CN202011312741 A CN 202011312741A CN 112495069 A CN112495069 A CN 112495069A
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- cylinder body
- mist
- hydrogen sulfide
- sulfide gas
- foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
- B01D46/0008—Two or more filter elements not fluidly connected positioned in the same housing
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/16—Hydrogen sulfides
- C01B17/168—Purification
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention belongs to the field of gas-mist separation equipment, and discloses a foam catching device for purifying liquid sulfur spray foam in hydrogen sulfide gas, wherein an interlayer space is formed by an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder are connected with a hydrogen sulfide gas inlet, a cylinder flange gland at the top of the inner upper cylinder is connected with a hydrogen sulfide gas outlet, the outer cylinder is connected with a jacket steam inlet and a jacket steam outlet, a foam catching element assembly is arranged on the interlayer and comprises an upper silk screen fixing grid, a foam catching silk screen, a lower silk screen supporting grid and a sleeve, the sleeve is arranged in an inner layer and an outer layer, the foam catching silk screen is arranged in the inner layer, the interlayer space between the inner layer and the outer layer is communicated with the steam inlet and; the foam catching wire mesh is integrally arranged in an inclined mode, the lower end of the inclined plane is fixedly provided with flow aiding fins, and the tail ends of the flow aiding fins are arranged in a downward inclined mode. The advantages are that: the inclined foam catching wire net and the flow-assistant fins improve the efficiency of liquid-sulfur separation. Meanwhile, the temperature of the liquid sulfur is kept through the heat preservation of the jacket, and the solidification blockage is avoided.
Description
Technical Field
The invention belongs to gas-fog separation equipment used in the industries of chemical industry, metallurgy and the like, and relates to a device for separating gas fog in hydrogen sulfide gas synthesized by hydrogen and sulfur, in particular to a foam catching device for purifying liquid sulfur foam carried in the hydrogen sulfide gas synthesized by the industry.
Background
With the improvement of the environmental protection attention degree of the whole society, sulfide is used as a reducing agent and is more and more applied to the field of heavy metal wastewater treatment, wherein hydrogen sulfide is directly converted into water after being reduced, so that the advantages of cleanness and environmental protection are achieved, heavy metal ions in smelting wastewater such as nickel-copper-zinc-lead-cadmium-arsenic-gold and the like, wastewater in the titanium dioxide industry and complex mining and metallurgy wastewater can be efficiently removed, and the consumption of the sulfide in the field of environmental protection is increased year by year.
The hydrogen sulfide is an acute highly toxic, flammable and explosive gaseous inorganic compound and has strong reducibility. The method for preparing hydrogen sulfide generally comprises a ferrous sulfide method, an aluminum sulfide hydrolysis method and a hydrogen sulfur direct synthesis method. The most common method in the industry at present is a direct hydrogen sulfur synthesis method, in the preparation process, in order to promote the reaction to be carried out positively and avoid the reduction of the product purity by gas-gas mixing, the sulfur is generally controlled to be excessive, so that the synthesized hydrogen sulfide has high purity and few impurities, but liquid sulfur entrainment is carried in the hydrogen sulfide gas after the reaction.
The problem of the entrainment of the liquid sulfur foam of the hydrogen sulfide gas in the hydrogen sulfur synthesis method is solved, the method for controlling the temperature and the flow rate of the hydrogen sulfide gas at the outlet of a synthesis tower and naturally separating the liquid sulfur foam in the hydrogen sulfide gas by means of gravity is generally adopted at home at present, the foam catching efficiency of the liquid sulfur is low, the running blockage rate of the device is high, part of manufacturers also use simple liquid sulfur catching equipment, but the used catching equipment is simple in design and high in blockage rate, the device can be dredged by stopping production and dismantling disassembly during maintenance, the hydrogen sulfide gas preparation system is enabled to fluctuate frequently, and the operation of the environment-friendly device is directly unstable.
Disclosure of Invention
The invention aims to provide a liquid sulfur foam-catching device which is high in foam-catching efficiency, simple, reliable, stable in operation and convenient to overhaul, aiming at the current situations that in the prior art, the technology for removing liquid sulfur spray in hydrogen sulfide gas prepared from hydrogen and sulfur is imperfect and the foam-catching efficiency is low.
The technical scheme of the invention is as follows: a foam catching device for purifying liquid sulfur foam in hydrogen sulfide gas comprises an inner cylinder body and an outer cylinder body, wherein the outer cylinder body is wrapped outside the inner cylinder body to form an interlayer space, supporting legs are fixedly connected to the outer part of the outer cylinder body, the inner part of the inner cylinder body is divided into an inner upper cylinder body and an inner lower cylinder body by an inner cylinder body interlayer, the side part of the inner lower cylinder body is connected with a hydrogen sulfide gas inlet, the top part of the inner upper cylinder body is connected with a cylinder body flange gland, the cylinder body flange gland is connected with a hydrogen sulfide gas outlet, the outer cylinder body is connected with a jacket steam inlet and a jacket steam outlet, a foam catching element assembly is installed on the inner cylinder body interlayer and comprises an upper screen mesh fixing grid, a foam catching screen, a lower screen mesh bearing grid and a sleeve, the foam catching screen is arranged inside the inner layer, the upper and lower ports of the inner layer are arranged in an open manner, so that the inner upper cylinder body is, A closed interlayer space is formed between the inner layer and the outer layer between the lower silk screen bearing grids, the interlayer space is communicated with a mist catching element component steam inlet and a mist catching element component steam outlet, the bottom of the inner cylinder body is connected with a liquid sulfur outlet, and the liquid sulfur outlet pipe penetrates through the outer cylinder body; the foam catching wire mesh is integrally arranged in an inclined mode (inclined relative to the horizontal plane), the flow aiding fins are fixed to the lower end of the inclined plane, and the tail ends of the flow aiding fins are arranged obliquely downwards (inclined according to the inclined direction of the foam catching wire mesh, an included angle can exist between the flow aiding fins and the inclined direction of the foam catching wire mesh, however, the end, far away from a welding point of the foam catching wire mesh, of each flow aiding fin must be at a low position, and therefore the condensed liquid sulfur can be guaranteed to flow.
Preferably, the inner lower cylinder is communicated with an upper end flange of the liquid level meter and a lower end flange of the liquid level meter, and the upper end flange of the liquid level meter and the lower end flange of the liquid level meter are used for being connected with an external liquid level meter.
Preferably, the mist eliminator member is mounted in a central position of the inner cylinder.
Preferably, the inner upper cylinder is communicated with a high-temperature purging gas (nitrogen) inlet, the inner lower cylinder is communicated with a purging replacement port, the high-temperature purging gas inlet is formed in the flange gland of the cylinder, the purging replacement port is formed in the lower portions of the inner cylinder and the outer cylinder, and the gas pipe penetrates through the outer cylinder.
Preferably, the vapor inlet of the mist catching element assembly extends into the upper part of the interlayer space between the inner layer and the outer layer of the sleeve through the wall of the inner cylinder of the inner upper cylinder, and the vapor outlet of the mist catching element assembly extends into the lower part of the interlayer space between the inner layer and the outer layer of the sleeve through the bottoms of the inner cylinder and the outer cylinder.
Preferably, the jacket steam inlet is arranged above the jacket steam outlet, the jacket steam inlet is arranged at the upper part of the outer cylinder body, and the jacket steam outlet is arranged at the bottom of the outer cylinder body.
Preferably, the upper part of the outer cylinder body is provided with an exhaust hole.
Preferably, the inner cylinder body is provided with a flange, is matched with a cylinder body flange gland and is in sealing connection with a graphite wound metal gasket by a gland bolt.
Preferably, the upper silk screen fixing grid and the lower silk screen supporting grid are provided with matched fixing holes, and the fixing holes are penetrated through by screws and fixed by nuts so as to prevent the mist catching silk screen from being blown off.
Furthermore, the bottom of a gap between the foam catching wire net and the inner layer of the sleeve is provided with a funnel opening.
The invention has the beneficial effects that: compared with the existing wire mesh mist eliminator, the mist eliminating wire mesh is obliquely arranged and the flow-assistant fins are arranged, so that the liquid-sulfur separation efficiency is improved. Meanwhile, the temperature of the liquid sulfur is kept through the heat preservation of the jacket, and the solidification blockage is avoided. The high-temperature blowing gas blows the mist catching silk screen, attachments on the mist catching silk screen are quickly removed, and the problems of gas pressure drop and reduction of passing speed are quickly solved. The foam catching rate of liquid sulfur in the purified hydrogen sulfide gas after passing through the foam catching device exceeds 99 percent, the purity is greatly improved, the pipeline blockage rate is greatly reduced, the continuous and stable operation of subsequent equipment is facilitated, and the service life of the equipment is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the mist eliminator assembly of FIG. 1;
FIG. 3 is a cut-away view of the mist eliminator member assembly.
The reference numerals in the figures denote: the device comprises an inner cylinder body 1, an inner upper cylinder body 1-1, an inner lower cylinder body 1-2, an outer cylinder body 2, an inner cylinder body interlayer 3, a liquid sulfur foam catching element component 4, an upper silk screen fixing grid 4-1, a foam catching silk screen 4-2, a lower silk screen bearing grid 4-3, a fixing hole 4-4, a sleeve 4-5, a flow-assisting fin 4-6, a funnel opening 4-7, an exhaust hole 5, a cylinder body flange gland 6, a gland bolt 7, a graphite winding metal gasket 8 and a support leg 9; the device comprises a hydrogen sulfide gas inlet N11, a hydrogen sulfide gas outlet N12, a liquid sulfur outlet N13, a jacket steam inlet N21, a jacket steam outlet N22, a mist catching element assembly steam inlet N31, a mist catching element assembly steam outlet N32, a high-temperature purging gas inlet N41, a purging replacement port N42, a liquid level meter upper end flange N51 and a liquid level meter lower end flange N52.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, the foam catching device for purifying liquid sulfur foam in hydrogen sulfide gas comprises an inner cylinder 1, an outer cylinder 2, an inner cylinder interlayer 3, a liquid sulfur foam catching element assembly 4, a cylinder flange gland 6, an external interface of the foam catching device, support legs and the like. The liquid sulfur foam-trapping element consists of a lower silk screen bearing grid 4-3, a foam-trapping silk screen 4-2, an upper silk screen fixing grid 4-1, and matched fixing holes and bolts; the inner cylinder body 1 is connected with a hydrogen sulfide gas inlet N11, a liquid sulfur outlet N13, a purging replacement port N42, a liquid level meter upper interface N51 and a liquid level meter lower interface N52; an outer cylinder is arranged outside the inner cylinder to form a jacket cylinder; the outer cylinder 2 is connected with a jacket steam inlet N21 and a jacket steam outlet N22, and the upper part of the outer cylinder 2 is provided with an exhaust hole 5 for exhausting steam noncondensable gas so as to ensure the heat exchange effect. The foam catching wire net 4-2 is integrally and obliquely arranged, the lower end of the inclined surface is fixedly provided with flow-assisting fins 4-6, the flow-assisting fins 4-6 are obliquely and downwards arranged, and the bottom of a gap between the foam catching wire net 4-2 and the inner layer of the sleeve 4-5 is provided with a funnel opening 4-7. The foam catching wire mesh is inclined, so that condensed liquid sulfur flows down more quickly, and the flow-assisting fins form more liquid sulfur settlement surfaces, which is beneficial to faster settlement and falling of the liquid sulfur; when the device runs stably, liquid sulfur flows down from the funnel opening, the funnel opening is filled with the liquid sulfur basically, gas does not rise from the funnel opening, the gas only passes through the foam catching wire net, and the catching function of the foam catching wire net cannot be influenced. The foam catching screen is inclined and the flow-assisting fins are adopted, the liquid sulfur liquid level rising speed of the inner lower cylinder body 1-2 is higher than that of the vertically arranged foam catching screen, and the time of the liquid level at the same height is reduced by more than 10% than that of the vertically arranged foam catching screen, so that the processing speed of the hydrogen sulfide gas can be increased.
The foam catching device is applied to a hydrogen sulfide gas synthesis device for smelting copper at 200kg/h, firstly 0.35MPa saturated steam is introduced from a jacket steam inlet N21, steam condensate and steam are discharged from a jacket steam outlet N22 in a mixed state, and the exhaust holes 5 on a jacket cylinder are opened at regular time to discharge non-condensable gas; introducing 0.35MPa saturated steam from a steam inlet N31 of the mist catching element assembly, maintaining the temperature inside the mist catching element assembly at 140 ℃ to prevent the separated liquid sulfur from solidifying, and discharging the mixed state of steam condensate and steam from a steam outlet N32 of the mist catching element assembly; introducing the hydrogen sulfide gas carrying liquid sulfur mist at the outlet of the synthesis furnace into a mist catching device from N11, ascending at a certain speed from the bottom of the mist catching element assembly 4 of the inner lower cylinder 1-2 and passing through a mist catching wire net 4-2, and discharging the hydrogen sulfide gas from N12; and then opening an upper port N51 of the double-flange liquid level meter and a lower port N52 of the liquid level meter to keep the liquid level meter in a running state. When the liquid level of the liquid level meter shows that the liquid level exceeds 60 percent, opening a liquid sulfur outlet N13 to discharge; through detection, the trapping rate of liquid sulfur mist with the diameter of 6 microns or more in the hydrogen sulfide gas at the hydrogen sulfide gas outlet N12 by using a 200-mesh mist trapping screen is 99%, and liquid sulfur mist and solidified sulfur powder are not found in subsequent devices and pipelines.
Example 2
The foam catching device for purifying liquid sulfur mist in the hydrogen sulfide gas in the embodiment is used in a hydrogen sulfide gas synthesis device for copper smelting at 200kg/h, the system is started and operated, DCS displays that the pressure drop of the hydrogen sulfide gas at the outlet of a synthesis tower exceeds 20KPa on a certain day, and the foam catching element assembly 4 of a production investigation foam catching device is likely to be blocked, as in embodiment 1. The treatment was carried out as follows: in the process, the foam catching device in operation is switched to the standby foam catching device, the system is kept in normal operation, and then the foam catching device to be overhauled is isolated. Then high-temperature nitrogen is introduced from an inlet N41 of the high-temperature purging gas inlet to sequentially purge the inner upper cylinder 1-1 and the inner lower cylinder 1-2, and waste gas is discharged from the purging replacement port N42 until the system is smooth and is reserved again after normal maintenance.
The present invention has been described in terms of the preferred embodiments, but is not limited to the embodiments. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a purify mist catching device of liquid sulfur fog foam in hydrogen sulfide gas body, includes interior barrel (1), outer barrel (2), barrel (1) outside constitution intermediate layer space including outer barrel (2) package, outer barrel (2) outside fixed connection landing leg (9), its characterized in that: the inner part of the inner cylinder body (1) is divided into an inner upper cylinder body (1-1) and an inner lower cylinder body (1-2) by an inner cylinder body interlayer (3), the side part of the inner lower cylinder body (1-2) is connected with a hydrogen sulfide gas inlet (N11), the top part of the inner upper cylinder body (1-1) is connected with a cylinder body flange gland (6), the cylinder body flange gland (6) is connected with a hydrogen sulfide gas outlet (N12), the outer cylinder body (2) is connected with a jacket steam inlet (N21) and a jacket steam outlet (N22), the inner cylinder body interlayer (3) is provided with a foam catching element component (4), the foam catching element component (4) comprises an upper silk screen fixing grid (4-1), a foam catching silk screen (4-2), a lower silk screen bearing grid (4-3) and a sleeve (4-5), and the sleeve (4-5) is arranged in the, the foam catching screen mesh (4-2) is arranged in the inner layer, the upper opening and the lower opening of the inner layer are arranged in an open manner, so that the inner upper cylinder body (1-1) is communicated with the inner lower cylinder body (1-2), the foam catching screen mesh (4-2) is fixed between the upper screen mesh fixing grid (4-1) and the lower screen mesh bearing grid (4-3), a closed interlayer space is arranged between the inner layer and the outer layer and is communicated with a foam catching element component steam inlet (N31) and a foam catching element component steam outlet (N32), the bottom of the inner cylinder body (1) is connected with a liquid sulfur outlet (N13), and a liquid sulfur outlet (N13) pipe penetrates through the outer cylinder body (2); the foam catching wire net (4-2) is integrally and obliquely arranged, the lower end of the inclined plane is fixedly provided with flow aiding fins (4-6), and the flow aiding fins (4-6) are obliquely and downwards arranged.
2. The mist eliminator for purifying liquid sulfur mist in hydrogen sulfide gas as claimed in claim 1, wherein: the inner lower barrel (1-2) is communicated with a liquid level meter upper end flange (N51) and a liquid level meter lower end flange (N52), and the liquid level meter upper end flange (N51) and the liquid level meter lower end flange (N52) are used for being connected with an external liquid level meter.
3. The mist eliminator for purifying liquid sulfur mist in hydrogen sulfide gas as claimed in claim 1, wherein: the mist catching element assembly (4) is arranged at the central position of the inner cylinder body.
4. The mist eliminator for purifying liquid sulfur mist in hydrogen sulfide gas as claimed in claim 1, wherein: the inner upper barrel (1-1) is communicated with the high-temperature purging gas inlet (N41), the inner lower barrel (1-2) is communicated with the purging replacement port (N42), the high-temperature purging gas inlet (N41) is arranged on the barrel flange gland (6), the purging replacement port (N42) is arranged at the lower parts of the inner barrel (1) and the outer barrel (2), and the air pipe penetrates through the outer barrel (2).
5. The mist eliminator for purifying liquid sulfur mist in hydrogen sulfide gas as claimed in claim 1, wherein: the vapor inlet (N31) of the mist catching element assembly extends into the upper part of the interlayer space of the inner layer and the outer layer of the sleeve (4-5) through the wall of the inner barrel body (1) of the inner upper barrel body (1-1), and the vapor outlet (N32) of the mist catching element assembly extends into the lower part of the interlayer space of the inner layer and the outer layer of the sleeve (4-5) through the bottoms of the inner barrel body (1) and the outer barrel body (2).
6. The mist eliminator for purifying liquid sulfur mist in hydrogen sulfide gas as claimed in claim 1, wherein: the jacket steam inlet (N21) is arranged above the jacket steam outlet (N22), the jacket steam inlet (N21) is arranged at the upper part of the outer cylinder body (2), and the jacket steam outlet (N22) is arranged at the bottom of the outer cylinder body (2).
7. The mist eliminator for purifying liquid sulfur mist in hydrogen sulfide gas as claimed in claim 1, wherein: the upper part of the outer cylinder body (2) is provided with an exhaust hole (5).
8. The mist eliminator for purifying liquid sulfur mist in hydrogen sulfide gas as claimed in claim 1, wherein: the inner cylinder body (2) is provided with a flange, is matched with a cylinder body flange gland (6), and is in sealing connection with a graphite winding metal gasket (8) through a gland bolt (7).
9. The mist eliminator for purifying liquid sulfur mist in hydrogen sulfide gas as claimed in claim 1, wherein: the upper silk screen fixing grid (4-1) and the lower silk screen supporting grid (4-3) are provided with matched fixing holes (4-4), pass through the fixing holes (4-4) through screws and are fixed by nuts so as to prevent the mist catching silk screen from being blown off.
10. The mist eliminator for purifying liquid sulfur mist in hydrogen sulfide gas as claimed in claim 1, wherein: the bottom of the gap between the mist catching screen (4-2) and the inner layer of the sleeve (4-5) is provided with a funnel opening (4-7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312741.5A CN112495069A (en) | 2020-11-20 | 2020-11-20 | Foam catching device for purifying liquid sulfur foams in hydrogen sulfide gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312741.5A CN112495069A (en) | 2020-11-20 | 2020-11-20 | Foam catching device for purifying liquid sulfur foams in hydrogen sulfide gas |
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| Publication Number | Publication Date |
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| CN112495069A true CN112495069A (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011312741.5A Pending CN112495069A (en) | 2020-11-20 | 2020-11-20 | Foam catching device for purifying liquid sulfur foams in hydrogen sulfide gas |
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| CN (1) | CN112495069A (en) |
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| CN202912691U (en) * | 2012-06-15 | 2013-05-01 | 洛阳瑞泽石化工程有限公司 | Liquid sulfur collector for sulfur recovery device |
| CN103480207A (en) * | 2013-09-21 | 2014-01-01 | 南京瑞旭产品技术有限公司 | Wire mesh demister |
| CN204767983U (en) * | 2015-07-09 | 2015-11-18 | 重庆科技学院 | High -efficient defogging filtering separator |
| CN206073753U (en) * | 2016-09-30 | 2017-04-05 | 辽宁工程技术大学 | A kind of water-saving cooling tower |
| CN207591447U (en) * | 2017-11-24 | 2018-07-10 | 内蒙古伊泰化工有限责任公司 | Wire mesh demister |
| CN109439817A (en) * | 2018-12-27 | 2019-03-08 | 中冶京诚工程技术有限公司 | A kind of granulated energy conservation of blast furnace cinder disappears white equipment |
| CN209020059U (en) * | 2018-08-29 | 2019-06-25 | 阜新汉道化工有限责任公司 | A kind of demister |
| CN210729049U (en) * | 2019-09-04 | 2020-06-12 | 山东三维石化工程股份有限公司 | Tail gas liquid separating tank of sulfur recovery device |
| CN211799378U (en) * | 2019-12-05 | 2020-10-30 | 付伟 | Integrative jar of flue gas denitration aqueous ammonia evaporation buffering |
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2020
- 2020-11-20 CN CN202011312741.5A patent/CN112495069A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2309877Y (en) * | 1997-08-06 | 1999-03-10 | 陈长林 | Concave flow-guiding type screen foam remover |
| CN201871321U (en) * | 2010-11-16 | 2011-06-22 | 东莞德永佳纺织制衣有限公司 | Desulfurization tower |
| CN202490556U (en) * | 2012-03-18 | 2012-10-17 | 赖永发 | Wash oil capture tower |
| CN202912691U (en) * | 2012-06-15 | 2013-05-01 | 洛阳瑞泽石化工程有限公司 | Liquid sulfur collector for sulfur recovery device |
| CN103480207A (en) * | 2013-09-21 | 2014-01-01 | 南京瑞旭产品技术有限公司 | Wire mesh demister |
| CN204767983U (en) * | 2015-07-09 | 2015-11-18 | 重庆科技学院 | High -efficient defogging filtering separator |
| CN206073753U (en) * | 2016-09-30 | 2017-04-05 | 辽宁工程技术大学 | A kind of water-saving cooling tower |
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| CN211799378U (en) * | 2019-12-05 | 2020-10-30 | 付伟 | Integrative jar of flue gas denitration aqueous ammonia evaporation buffering |
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| CB03 | Change of inventor or designer information |
Inventor after: Jiang Xiaoyun Inventor after: Zhu Bolin Inventor after: Zhou Jianxiong Inventor after: Deng Jun Inventor after: Yi Yanan Inventor after: Yang Chunhua Inventor after: Zhang Fengxue Inventor before: Zhu Bolin |
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Effective date of registration: 20210913 Address after: No. 673, Xinsheng Road, high tech Development Zone, Changsha, Hunan 410005 Applicant after: CHANGSHA HASKY ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 730000 Ruiling Yayuan (East Gate), Lanzhou New District, Lanzhou City, Gansu Province Applicant before: Zhu Bolin |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210316 |