CN112066614A - Cooling and anti-caking lifting device for producing flake caustic soda by large-scale pot method - Google Patents
Cooling and anti-caking lifting device for producing flake caustic soda by large-scale pot method Download PDFInfo
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- CN112066614A CN112066614A CN201910497334.7A CN201910497334A CN112066614A CN 112066614 A CN112066614 A CN 112066614A CN 201910497334 A CN201910497334 A CN 201910497334A CN 112066614 A CN112066614 A CN 112066614A
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- caustic soda
- cooling
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- self
- lifting
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title claims abstract description 239
- 235000011121 sodium hydroxide Nutrition 0.000 title claims abstract description 76
- 238000001816 cooling Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007605 air drying Methods 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 7
- 239000003518 caustics Substances 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000004887 air purification Methods 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D1/00—Devices using naturally cold air or cold water
-
- 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
- B01D53/26—Drying gases or vapours
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/04—Charging, supporting, and discharging the articles to be cooled by conveyors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/041—Treating air flowing to refrigeration compartments by purification
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a cooling and anti-caking lifting device for producing caustic soda flakes by a large-pot method, and relates to the field of cooling and material height lifting for producing basic chemical raw materials. The device mainly comprises three parts, namely a flake caustic soda lifting cooler, an air drying purifier and a sealing system, wherein the lifting cooler, the air drying purifier and the sealing system of the device are designed in an integrated manner, and the purposes of flake caustic soda cooling and high lifting are achieved by adopting a mode of firstly drying and purifying air, then simultaneously carrying out flake caustic soda air cooling and flake caustic soda high lifting. The device is detachable, the equipment can be cleaned, and the filler can be replaced in a renewable mode. The design defects of the existing automatic packaging system for cooling and height-lifting butt joint of the flake caustic soda are overcome, the problems of high discharging temperature and poor working condition can be effectively solved, the flake caustic soda is prevented from caking, the automatic packaging system for the flake caustic soda can be butt-jointed, and the production efficiency and the product quality are improved. The aim of reducing the temperature of the caustic soda flakes is fulfilled, the automation degree is improved, the working condition is improved, and the labor intensity of personnel is reduced.
Description
Technical Field
The invention relates to the field of cooling and material lifting of basic chemical raw materials, in particular to the field of cooling and material lifting of caustic soda flakes.
Background
The caustic soda flakes, chemically named sodium hydroxide and white semitransparent flaky solid, are basic chemical raw materials and widely used in industries such as light textile industry, chemical industry, petroleum industry and the like, and the large-pot method for producing the caustic soda flakes is an important caustic soda flake production method. But the cooling difficulty of the large-kettle method for producing the flake caustic soda is large, and cooling equipment is huge. The product discharge temperature of most manufacturers is too high, so that the working condition of workers is poor, the requirement on the quality of a packaging bag is high, the packaging bag is easily scalded, the position of a discharge port is low, the butt joint of an automatic packaging system is difficult to realize, caustic soda flakes are easy to absorb moisture and agglomerate, the production efficiency is low, and the product quality is poor.
Disclosure of Invention
In order to overcome the defects of the existing equipment, the invention provides a lifting device for cooling and preventing agglomeration in the process of producing caustic soda flakes by a large boiler. The device is designed by integrating the flake caustic soda lifting cooler, the air drying purifier and the sealing system, the purposes of flake caustic soda cooling and high lifting are achieved by adopting a mode of firstly drying and purifying air, then flake caustic soda air cooling and flake caustic soda high lifting simultaneously, the device is detachable, equipment can be cleaned, and fillers can be replaced in a renewable mode. The automatic packaging system overcomes the design defects of insufficient cooling and low discharge port position in the existing caustic soda flake production, can effectively solve the problems of high caustic soda flake discharge temperature, poor working condition of workers and difficulty in butt joint of an automatic caustic soda flake packaging system, simultaneously prevents the caustic soda flake from caking, and can improve the caustic soda flake production efficiency and the product quality. The purposes of cooling and preventing caking are achieved, the automatic packaging system can be butted, the working condition is improved, and the labor intensity of personnel is reduced.
In order to solve the problems, the technical scheme adopted by the invention is as follows: on the basis of current auger delivery ware and automatic packaging system, to the high temperature of flake caustic soda ejection of compact, the position is low, the easy caking scheduling problem increased the cooling of flake caustic soda and prevented caking hoisting device the device mainly by flake caustic soda promotion cooler, the air drying clarifier, sealing system triplex is constituteed and is integrated design, adopt earlier dry air-purifying then the mode that flake caustic soda air cooling and the high promotion of flake caustic soda go on simultaneously reach the purpose of flake caustic soda cooling and lifting height, can carry out to the automatic encapsulation of flake caustic soda, the device can dismantle, equipment can wash, the change of packing can regenerating. The materials of all parts in the air purifier can be adjusted according to the air purification degree, and the air quantity of the fan can be adjusted according to the discharge temperature of the caustic soda flakes. The air drying purifier is carried out by adopting a mode of firstly carrying out alkaline washing, then drying and finally purifying, wherein an air inlet pipe (18) of an alkaline washing section (17) is introduced to the bottom of alkaline washing liquid (19), a bubbler (20) is arranged at the port of the air inlet pipe, air can be uniformly dispersed in the alkaline washing liquid, the alkaline washing liquid is self-produced alkaline solution, a demister (21) is arranged at an outlet of the alkaline washing section, most of moisture can be prevented from entering a drying section (15), a separation net (22) is arranged at an air outlet of the drying section, the filler (16) of the drying section is allochroic silica gel, and the air drying purifier can be dried and can display the air drying state; the air inlet and the air outlet of the purification section are provided with grids (22, 23) to prevent the filler from moving, and the filler (14) of the purification section is activated carbon. The caustic soda flake lifting cooler adopts a conveying belt (8) to lift caustic soda flakes, a motor (5) is hidden under the conveying belt, a driving wheel (4) is driven through belt connection, a driven wheel (11) and the whole conveying belt rotate clockwise, feeding caustic soda flakes fall onto the conveying belt, a partition plate (9) is uniformly arranged on the belt to prevent the caustic soda flakes from sliding off, the belt is made of an alkali-proof material, the belt also has the function of cooling caustic soda flakes when conveying the caustic soda flakes, and under the action of a tail-end fan (2), dry and purified air and the caustic soda flakes form countercurrent air-cooled cooling caustic soda flakes. The sealing system is connected with a caustic soda feed inlet (6) through a sealing flange (7), a conveying belt shell (10) isolates contact of caustic soda flakes and external air, a discharge port self-closing device prevents air from flowing in, the discharge port self-closing device has a self-closing and flange connection function, the self-closing device enables a self-closing blade (28) to be closed under the self-weight action of an anti-corrosion weight block (25) under the self-weight action of a self-closing blade rotating shaft (26) when discharging is not performed, the self-weight of the caustic soda flakes overcomes the self-weight of the anti-corrosion weight block (25) to be opened under the lever action of the self-closing blade rotating shaft (26) when discharging is performed, and.
Compared with the prior art, the invention has the beneficial effects that:
(1) the temperature of the flake caustic soda can be greatly reduced after being cooled by the device;
(2) the device lifts the caustic soda flakes and can be butted with an automatic packaging system;
(3) the sealing system of the device can isolate air from entering, and prevent the caustic soda flakes from absorbing moisture and caking;
(4) the air drying purifier of the device can provide dry and clean deacidification cooling gas for the air cooling of the caustic soda flakes.
Drawings
FIG. 1 is a front view of a cooling and anti-caking lifting device for producing caustic soda flakes by a large-scale pot method;
FIG. 2 is a top view of a cooling and anti-caking lifting device for producing flake caustic soda by a large-scale kettle method;
FIG. 3 is a left side view of a cooling and anti-caking lifting device for producing caustic soda flakes by a large-scale pot method;
FIG. 4 is a drawing of an air drying purifier of a cooling and anti-caking lifting device for producing flake caustic soda by a large-scale pot method;
FIG. 5 is a self-closing device for the discharge port of the lifting device for cooling and preventing caking in the process of producing caustic soda flakes by a large kettle.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
Example 1
The cooling and anti-caking lifting device for producing caustic soda flakes by a cauldron method shown in figure 1 consists of a caustic soda flake lifting cooler, an air drying purifier and a sealing system, and is designed in an integrated manner, air is uniformly dispersed in alkaline washing liquid (19) through a bubbler (20) from an air inlet pipe (18) of an alkaline washing section (17) of the air purifier under the action of a fan, acid gas in the air can be removed through the alkaline washing liquid, then moisture is removed through a demister (21), the air enters a drying section (15), and the air is purified through a purifying section (14) after the water is completely removed through the drying section.
Meanwhile, a conveying belt (8) of the flake caustic soda lifting cooler drives a driving wheel (4), a driven wheel (11) and the whole conveying belt to rotate clockwise through a motor (5), flake caustic soda falls onto the belt from a feeding hole, moves to a discharging hole along with the belt and falls onto a discharging hole self-closing device, and the flake caustic soda and dry and purified air form countercurrent air cooling flake caustic soda when the belt conveys the flake caustic soda.
When the discharging is not carried out, the discharging port self-closing device prevents air from flowing in, the self-closing device enables the self-closing blade (28) to be in a closed state under the action of the self-weight of the anti-corrosion heavy block (25) through the lever action of the self-closing blade rotating shaft (26), flake caustic soda falls to the discharging port self-closing device during discharging, the flake caustic soda overcomes the lever action of the self-weight of the anti-corrosion heavy block (25) on the self-closing blade rotating shaft (26) to be opened, and the larger the discharging amount is, the larger the opening angle.
The installation and maintenance method of the device comprises the following steps:
1. the temperature reduction and anti-caking lifting device for producing the flake caustic by the large-kettle method is arranged on a discharge port interface of an eccentric spiral conveyor, in order to ensure the smooth material, an installation port is slightly lower than the discharge port of the spiral conveyor, the interface is sealed, and the spiral conveyor is closed before installation;
2. the pipeline of the lifting device for cooling and preventing caking in the process of producing flake caustic soda by a large boiler and the self-flowing cold water tank are cleaned at least once in half a year, and can be cleaned in advance according to the use condition, and the filler is replaced or regenerated once every three months and can also be replaced in advance according to the use condition.
Claims (5)
1. A cooling and anti-caking lifting device for producing flake caustic soda by a cauldron relates to the field of cooling and material height lifting for producing basic chemical raw materials, and mainly comprises a flake caustic soda lifting cooler, an air drying purifier and a sealing system, wherein the flake caustic soda lifting cooler comprises a conveying belt (8), a motor (5), a driving wheel (4), a driven wheel (11), a baffle plate (9), a fan (2), a fan air inlet (3) and a fan air outlet (1); the air drying purifier (15) comprises an air inlet (18), a bubbler (20), an alkaline washing section (17), alkaline washing liquid (19), a drying section (15), a drying filler (16), partition nets (22, 23), a purifying section (14) and a purifying section filler (14); the sealing system comprises a feeding port sealing flange (7), a feeding port (6), a conveying belt shell (10), a discharging port, (13), a discharging port self-closing device (12), a self-closing device connecting hole (24), a self-closing blade (28), a self-closing blade rotating shaft (26) and an anti-corrosion heavy block (25), wherein the self-closing opening (27) is formed in the conveying belt shell.
2. The cooling and anti-caking lifting device for producing caustic soda flakes by a cauldron according to claim 1, which is characterized in that the device is mainly designed by integrating three parts, namely a caustic soda flake lifting cooler, an air drying purifier and a sealing system, and achieves the purposes of cooling and lifting the caustic soda flakes by adopting a mode of drying and purifying air firstly, then cooling and lifting the caustic soda flakes at the same time, can automatically package the caustic soda flakes, is detachable, can be cleaned, can regenerate and replace fillers, can adjust the filling amount of each part in the air purifier according to the air purification degree, and can adjust the air volume of a fan according to the discharge temperature of the caustic soda flakes.
3. The cooling and anti-caking lifting device for producing caustic soda flakes by a cauldron method according to claim 1, which is characterized in that an air drying purifier of the device adopts a mode of firstly carrying out caustic washing, then carrying out drying and finally carrying out purification, wherein an air inlet pipe (18) of the caustic washing section (17) is introduced into the bottom of washing liquid, a port of the air inlet pipe is provided with a bubbler (20), the caustic washing liquid (19) is self-produced caustic soda flakes, and an outlet of the caustic washing section is provided with a demister (21); the air inlet and the air outlet of the drying section (15) are provided with grids (22) to prevent the filler from moving, and the filler (16) of the drying section is allochroic silica gel, so that the drying can be realized and the air drying state can be displayed; the air inlet and the air outlet of the purification section (14) are provided with grids (23) for preventing the filler from moving, and the filler (14) of the purification section is activated carbon.
4. The cooling and anti-caking lifting device for producing caustic soda flakes by a cauldron as claimed in claim 1, which is characterized in that a caustic soda flake lifting cooler of the device adopts a conveying belt (8) to lift caustic soda flakes, a motor (5) is hidden under the conveying belt and is connected with a driving wheel (4), a driven wheel (11) and the whole conveying belt through a belt to rotate clockwise, a partition plate (9) is uniformly arranged on the belt to prevent the caustic soda flakes from slipping off, the belt is made of an anti-alkali material and has the function of cooling the caustic soda flakes, and under the action of a tail end fan (2), dry and purified air and the caustic soda flakes form counter-flow air cooling caustic soda flakes.
5. The cooling and anti-caking lifting device for producing caustic soda flakes by a cauldron according to claim 1, which is characterized in that a sealing system of the device is connected with a caustic soda flake feeding port (6) through a sealing flange (7), a conveying belt shell (10) isolates contact of caustic soda flakes and outside air, a discharge port self-closing device prevents air inflow, the discharge port self-closing device has the functions of self-closing and flange connection, the self-closing device closes a self-closing blade (28) under the action of the self-closing blade rotating shaft (26) under the self-weight of an anti-corrosion weight block (25) when discharging is not performed, the self-closing blade overcomes the self-weight of the anti-corrosion weight block (25) to open under the lever action of the self-closing blade rotating shaft (26) when discharging, and the larger the discharging amount is, the larger the opening angle is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497334.7A CN112066614A (en) | 2019-06-10 | 2019-06-10 | Cooling and anti-caking lifting device for producing flake caustic soda by large-scale pot method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497334.7A CN112066614A (en) | 2019-06-10 | 2019-06-10 | Cooling and anti-caking lifting device for producing flake caustic soda by large-scale pot method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112066614A true CN112066614A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910497334.7A Pending CN112066614A (en) | 2019-06-10 | 2019-06-10 | Cooling and anti-caking lifting device for producing flake caustic soda by large-scale pot method |
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| CN (1) | CN112066614A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006043632A (en) * | 2004-08-06 | 2006-02-16 | Takuma Co Ltd | Method and equipment for treating combustion gas |
| CN201567241U (en) * | 2009-10-14 | 2010-09-01 | 李柏军 | Production device for high effective flake alkali molding |
| CN105800268A (en) * | 2015-10-27 | 2016-07-27 | 湖南机电职业技术学院 | Cooling spiral conveyor for powdery explosives |
| CN107600998A (en) * | 2017-08-30 | 2018-01-19 | 新乡市巨能合成材料有限公司 | A kind of packed flaky sodium hydrate elevator |
| CN206959416U (en) * | 2017-06-28 | 2018-02-02 | 上海恒业分子筛股份有限公司 | A kind of molecular sieve cooling device that can cool rapidly |
| CN208217103U (en) * | 2018-05-11 | 2018-12-11 | 宗源生态肥业有限公司 | A kind of chemical fertilizer conveying device and packaging production line |
-
2019
- 2019-06-10 CN CN201910497334.7A patent/CN112066614A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006043632A (en) * | 2004-08-06 | 2006-02-16 | Takuma Co Ltd | Method and equipment for treating combustion gas |
| CN201567241U (en) * | 2009-10-14 | 2010-09-01 | 李柏军 | Production device for high effective flake alkali molding |
| CN105800268A (en) * | 2015-10-27 | 2016-07-27 | 湖南机电职业技术学院 | Cooling spiral conveyor for powdery explosives |
| CN206959416U (en) * | 2017-06-28 | 2018-02-02 | 上海恒业分子筛股份有限公司 | A kind of molecular sieve cooling device that can cool rapidly |
| CN107600998A (en) * | 2017-08-30 | 2018-01-19 | 新乡市巨能合成材料有限公司 | A kind of packed flaky sodium hydrate elevator |
| CN208217103U (en) * | 2018-05-11 | 2018-12-11 | 宗源生态肥业有限公司 | A kind of chemical fertilizer conveying device and packaging production line |
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Application publication date: 20201211 |