CN112066756A - Deep cooling device based on large-pot method for producing flake caustic soda - Google Patents
Deep cooling device based on large-pot method for producing flake caustic soda Download PDFInfo
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- CN112066756A CN112066756A CN201910497335.1A CN201910497335A CN112066756A CN 112066756 A CN112066756 A CN 112066756A CN 201910497335 A CN201910497335 A CN 201910497335A CN 112066756 A CN112066756 A CN 112066756A
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- Prior art keywords
- cold water
- cooling
- caustic soda
- water tank
- sprayer
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title claims abstract description 87
- 238000001816 cooling Methods 0.000 title claims abstract description 46
- 235000011121 sodium hydroxide Nutrition 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000000498 cooling water Substances 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000003518 caustics Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003208 petroleum Substances 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
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/005—Other direct-contact heat-exchange apparatus one heat-exchange medium being a solid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a deep cooling device for producing flake caustic soda based on a cauldron method, and relates to the field of cooling for producing basic chemical raw materials. The device mainly comprises four parts, namely a material conveying system (1) and a material conveying system (5), a sectional sprayer (7), a screw conveyor (4) and a self-flowing cold water tank (14), wherein the material conveying system, the sectional sprayer, the screw conveyor and the self-flowing cold water tank of the device are integrally designed, and the purpose of deep cooling is achieved by adopting a mode of expanding heat exchange area, sectional cooling and carrying out countercurrent indirect contact at the same time. The device is detachable, and the pipeline can be cleaned. The design defect that the existing caustic soda flake production cannot be deeply cooled is overcome, the problems of high caustic soda flake discharging temperature and poor working condition of workers can be effectively solved, meanwhile, the caustic soda flake caking is also prevented, an automatic caustic soda flake packaging system can be connected, and the caustic soda flake production efficiency and the product quality are improved. Not only achieves the purpose of deep cooling, but also improves the working condition and lightens the labor intensity of personnel.
Description
Technical Field
The invention relates to the field of cooling of basic chemical raw materials, in particular to the field of deep cooling 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 the packaging bag is high, the packaging bag is easy to scald, automatic packaging is difficult to realize, the production efficiency is low, and the product quality is poor.
Disclosure of Invention
In order to overcome the defects of the prior equipment, the invention provides a deep cooling device for producing caustic soda flakes by a large-kettle method. The material conveying system, the sectional sprayer, the screw conveyor and the self-flowing cold water pool of the device are designed integrally, and the purpose of deep cooling is achieved by adopting a mode of expanding heat exchange area, sectional cooling and carrying out autonomous countercurrent indirect contact at the same time. The device is detachable, and the pipeline can be cleaned. The design defect that the existing caustic soda flake production cannot be deeply cooled is overcome, the problems of high caustic soda flake discharging temperature and poor working condition of workers can be effectively solved, meanwhile, the caustic soda flake caking is also prevented, an automatic caustic soda flake packaging system can be connected, and the caustic soda flake production efficiency and the product quality are improved. Not only achieves the purpose of deep cooling, but also improves the working condition and lightens the labor intensity of personnel.
In order to solve the problems, the technical scheme adopted by the invention is as follows: on the basis of the existing screw conveyor, the cooling system is upgraded and modified. The material conveying system (1, 5), the sectional sprayer (7), the screw conveyor (4) and the gravity flow cold water pool (14) of the device are designed into a whole, and the purpose of deep cooling is achieved by adopting a mode of expanding heat exchange area, sectional cooling and automatic countercurrent indirect contact. The device can be dismantled, and the pipeline can be washed, and segmentation spray thrower (7) can carry out appropriate increase and decrease segmentation shower according to the water yield of ejection of compact temperature and cold water pond, and the adjustment of position can be carried out according to the condition of actual cooling to segmentation (16, 13), and spout and cold water pond (14) of flowing automatically are visible, can observe equipment in service behavior and carry out timely washing. The surface of the screw conveyor (4) is designed by adopting the concave-convex part (2), the fins (3) are added, the heat exchange area of the conveyor is greatly increased, and meanwhile, the fins also serve as partition plates for sectional cooling, so that cooling water of the sectional sprayer flows downstream to the corresponding cold water pool. Lateral mixing of the water flow is avoided. The segmented sprayer (7) is sequentially provided with a liquid spraying section (8), a spraying section (9) and a liquid spraying section (10) from left to right, the pipe diameters of the corresponding sections are gradually increased, and the nozzles are correspondingly increased. The water flow sprayed out of the corresponding section becomes thicker and the water quantity becomes larger. The small-flow jet water flow in the liquid spraying section is quickly vaporized, the latent heat of water is utilized to absorb heat to reduce the temperature of the conveyor and the materials, and the spraying water flow flowing in the spraying section (9) is quickly heated to absorb heat by the sensible heat of the water to reduce the temperature of the conveyor and the materials. The large-flow washing water flow in the liquid washing section (10) is slowly heated, and the sensible heat of the water is utilized to absorb heat so as to reduce the temperature of the conveyor and the materials. The gravity flow cold water pool (14) adopts a segmented design, a third cold water pool, a second cold water pool and a first cold water pool are sequentially arranged from left to right, the cold water pools are relatively separated by utilizing partitions (13 and 16), the heights of the partitions corresponding to cooling water outlets are increased step by step, and by utilizing the principle of a communicating vessel, cooling water can only flow to the left from the right and can not flow against the left, so that the countercurrent heat exchange is realized. The high-temperature cooling water after countercurrent is prevented from heating the low-temperature cooling water, and the cooling effect is reduced. Even if the high-temperature water flows out in time, the high-temperature cooling water is cooled by the low-temperature cooling water after the countercurrent heat exchange is realized, and the cooling effect is improved.
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, and the temperature is reduced to be slightly higher than the normal temperature and far lower than the product discharging temperature of the existing cooler;
(2) the device is subjected to a sectional cooling design, so that the cooling efficiency is improved;
(3) the sectional spray thrower can be properly increased or decreased according to the production requirement, and the partition of the artesian cold water tank can be moved according to the requirement;
(4) the cold water tank is designed to flow automatically, so that high-temperature water flows out in time, and the low-temperature cooling water is supplemented to cool the high-temperature cooling water.
Drawings
FIG. 1 is a front view of a deep cooling device for producing caustic soda flakes by a cauldron;
FIG. 2 is a top view of a deep cooling device for producing flake caustic soda by a large-scale kettle method;
FIG. 3 is a left side view of a deep cooling device for producing flake caustic soda by a cauldron;
FIG. 4 is a sectional spray thrower diagram of a deep cooling device for producing flake caustic by a cauldron method;
FIG. 5 is a diagram of a screw conveyor of a deep cooling device for producing flake caustic soda by a cauldron;
FIG. 6 is a diagram of a gravity flow cold water tank of a deep cooling device for producing flake caustic by a large-kettle method.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
Example 1
The deep cooling device for producing caustic soda flakes by a large kettle method shown in figure 1 mainly comprises four parts, namely a material conveying system (1 and 5), a segmented sprayer (7), a screw conveyor (4) and a self-flowing cold water pool (14), wherein liquid caustic soda flakes through a scraper of a caustic soda flake machine and enters the screw conveyor (4) through a hot material inlet (1) for cooling, and the caustic soda flakes gradually move towards a discharge port under the action of the screw conveyor until caustic soda flakes are output through a cold material outlet (5).
Cooling water enters a liquid spraying section (10), a spraying section (9) and a liquid spraying section (8) in sequence through a sectional sprayer water inlet (19) of a sectional sprayer (7) and sprays cooling water to a screw conveyor (4) through a nozzle, the cooling water correspondingly flows into a corresponding self-flowing cold water pool (14) under the action of a partition plate of a fin (3), and the water of the self-flowing cold water pool (14) sequentially passes through a first cold water pool (12), a partition (13), a second cold water pool (15), a partition (16), a third cold water pool (17) and an outflow device through a cooling water outlet (18). If the water quantity in the self-flowing cold water tank (14) is not enough, water can be supplemented through the cooling water inlet (11), and the flow of the cooling water is increased or decreased by controlling the cold water pump through the temperature sensor (6) according to the temperature of the discharged flake caustic soda. Controlling the discharge temperature of caustic soda flakes within 40-50 ℃.
The installation and maintenance method of the device comprises the following steps:
1. the deep cooling device for producing the flake caustic by the large pot method is arranged on a discharge port interface of a finished product storage hopper behind a cooling roller of the flake caustic machine, and is generally arranged at an outlet of the finished product storage hopper and slightly lower than the finished product storage hopper in order to ensure smooth materials, the interface is sealed, and the flake caustic machine is closed before installation;
2. the pipeline of the deep cooling device for producing the flake caustic by the large-pot method and the gravity flow cold water tank are cleaned at least once in half a year, and can be cleaned in advance according to the use condition.
Claims (5)
1. A deep cooling device for producing flake caustic soda based on a cauldron method relates to the field of cooling and cooling for producing basic chemical raw materials, and mainly comprises four parts, namely a material conveying system (1, 5), a segmented sprayer (7), a screw conveyor (4) and a self-flowing cold water pool (14), wherein the material conveying system comprises a hot material inlet (1), a cold material outlet (5) and a temperature sensor (6); the sectional sprayer (7) comprises a liquid spraying section (8), a spraying section (9), a liquid spraying section (10) and a sectional sprayer water inlet (19); the screw conveyor (4) comprises a concave-convex surface (2) and heat exchange fins (3); the gravity flow cold water tank (14) comprises a cooling water inlet (11), a first cold water tank (12), a partition (13), a second cold water tank (15), a partition (16), a third cold water tank (17) and a cooling water outlet (18).
2. The deep cooling device for producing flake caustic soda according to claim 1, wherein the four parts of the material conveying system (1, 5), the segmented sprayer (7), the screw conveyor (4) and the gravity flow cold water tank (14) of the device are designed in an integrated manner, the purpose of deep cooling is achieved by means of expanding heat exchange area, segmented cooling and simultaneously carrying out countercurrent indirect contact, the device is detachable, pipelines can be cleaned, the segmented sprayer (7) can appropriately increase or decrease segmented spray pipes according to discharge temperature and water quantity of the cold water tank, the partitions (13, 16) can adjust positions according to actual cooling conditions, nozzles and the cold water tank (14) can be seen, and equipment using conditions can be observed for timely cleaning.
3. The deep cooling device for producing caustic soda flakes based on the cauldron method as claimed in claim 1, wherein the outer surface of the screw conveyor (4) of the device is designed by adopting the concave-convex part (2), the fins (3) are increased, the heat exchange area of the conveyor is greatly increased, and the fins (3) also serve as partition plates for sectional cooling, so that cooling water of the sectional spray thrower flows downstream to the corresponding cold water pool, and the transverse mixing of water flow is avoided.
4. The deep cooling device for producing caustic soda flakes based on the cauldron as claimed in claim 1, wherein the segmented sprayer (7) of the device is provided with a liquid spraying section (8), a spraying section (9) and a liquid spraying section (10) in sequence from left to right, the pipe diameter of the corresponding section is gradually increased, the nozzle is correspondingly increased, the water flow sprayed from the corresponding section is thickened, and the water volume is increased.
5. The deep cooling device for producing flake caustic soda according to claim 1, wherein a self-flowing cold water tank (14) of the device is designed in a segmented manner, a third cold water tank (17), a second cold water tank (15) and a first cold water tank (12) are sequentially arranged from left to right, the cold water tanks are relatively separated by partitions (13 and 16), the heights of the partitions corresponding to cooling water outlets are gradually increased, and the cooling water can only flow from the right to the left and cannot flow back by utilizing a communicating vessel principle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497335.1A CN112066756A (en) | 2019-06-10 | 2019-06-10 | Deep cooling device based on large-pot method for producing flake caustic soda |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497335.1A CN112066756A (en) | 2019-06-10 | 2019-06-10 | Deep cooling device based on large-pot method for producing flake caustic soda |
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| Publication Number | Publication Date |
|---|---|
| CN112066756A true CN112066756A (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910497335.1A Pending CN112066756A (en) | 2019-06-10 | 2019-06-10 | Deep cooling device based on large-pot method for producing flake caustic soda |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112066756A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013007A (en) * | 2006-11-24 | 2007-08-08 | 华中科技大学 | Evaporating type air cooler spraying device |
| CN201935609U (en) * | 2011-01-26 | 2011-08-17 | 中节能六合天融环保科技有限公司 | Helical fin cooler for cooling high-temperature powdery materials |
| CN107019979A (en) * | 2017-05-23 | 2017-08-08 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | One kind cooling humidification dust arrester and application method |
| WO2017215162A1 (en) * | 2016-06-16 | 2017-12-21 | 广东合一新材料研究院有限公司 | Cooling system of working medium contact type for high-power electrical device |
| CN207378313U (en) * | 2017-10-29 | 2018-05-18 | 山东盛宝玻璃钢有限公司 | A kind of spray tube |
| CN109297347A (en) * | 2018-10-23 | 2019-02-01 | 上海宝丰机械制造有限公司 | A kind of evaporative condenser spray system |
| CN208802460U (en) * | 2018-10-06 | 2019-04-30 | 克拉玛依市奥峰环保科技有限责任公司 | A kind of cooling spiral conveying equipment |
-
2019
- 2019-06-10 CN CN201910497335.1A patent/CN112066756A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013007A (en) * | 2006-11-24 | 2007-08-08 | 华中科技大学 | Evaporating type air cooler spraying device |
| CN201935609U (en) * | 2011-01-26 | 2011-08-17 | 中节能六合天融环保科技有限公司 | Helical fin cooler for cooling high-temperature powdery materials |
| WO2017215162A1 (en) * | 2016-06-16 | 2017-12-21 | 广东合一新材料研究院有限公司 | Cooling system of working medium contact type for high-power electrical device |
| CN107019979A (en) * | 2017-05-23 | 2017-08-08 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | One kind cooling humidification dust arrester and application method |
| CN207378313U (en) * | 2017-10-29 | 2018-05-18 | 山东盛宝玻璃钢有限公司 | A kind of spray tube |
| CN208802460U (en) * | 2018-10-06 | 2019-04-30 | 克拉玛依市奥峰环保科技有限责任公司 | A kind of cooling spiral conveying equipment |
| CN109297347A (en) * | 2018-10-23 | 2019-02-01 | 上海宝丰机械制造有限公司 | A kind of evaporative condenser spray system |
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| PB01 | Publication | ||
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Application publication date: 20201211 |
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| RJ01 | Rejection of invention patent application after publication |