CN102616813A - Liquid caustic soda automatic flowing system during production of flake caustic soda - Google Patents
Liquid caustic soda automatic flowing system during production of flake caustic soda Download PDFInfo
- Publication number
- CN102616813A CN102616813A CN2012100659931A CN201210065993A CN102616813A CN 102616813 A CN102616813 A CN 102616813A CN 2012100659931 A CN2012100659931 A CN 2012100659931A CN 201210065993 A CN201210065993 A CN 201210065993A CN 102616813 A CN102616813 A CN 102616813A
- Authority
- CN
- China
- Prior art keywords
- caustic soda
- liquid
- foreheater
- stage pre
- heating boiler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title claims abstract description 124
- 239000007788 liquid Substances 0.000 title claims abstract description 57
- 235000011121 sodium hydroxide Nutrition 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000003513 alkali Substances 0.000 claims description 31
- 238000003723 Smelting Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000010411 cooking Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000006260 foam Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a liquid caustic soda automatic flowing system during production of flake caustic soda. The liquid caustic soda automatic flowing system comprises a third-stage pre-heating boiler (4), a second-stage pre-heating boiler (6) and a first-stage pre-heating boiler (7), wherein the third-stage pre-heating boiler (4), the second-stage pre-heating boiler (6) and the first-stage pre-heating boiler (7) are installed in a stepped manner from high to low in sequence; liquid caustic soda flows into the bottom of the third-stage pre-heating boiler (4) through a liquid inlet pipe (2) and a third-stage pre-heating boiler guide cylinder (3); after being filled, liquid flows into the bottom of the second-stage pre-heating boiler (6) through a second-stage pre-heating boiler guide cylinder (5); after being filled in the second-stage pre-heating boiler (6), liquid flows into the bottom of the first-stage pre-heating boiler (7) through a first-stage pre-heating boiler guide cylinder (8); and, after being filled in the first-stage pre-heating boiler (7), liquid flows into a caustic soda melting boiler (12) through a caustic soda melting boiler inlet flow pipe (9). According to the invention, the liquid caustic soda automatic flowing system is safe and simple to operate; after technological improvement, liquid caustic soda automatically flows; a suspended pump is not used for pouring liquid any longer; a liquid level is also unnecessary to observe on a cooking bench for a long time; and the liquid flows into the caustic soda melting boiler (12).
Description
Technical field
What the present invention relates to is that a kind of alkali production process liquid caustic soda is from streaming system.
Background technology
Cauldron caustic soda melting technology is directly to burn with naked light, is 32% or 50% liquid caustic soda heating evaporation to 460 ℃ with concentration, and after the water evaporates, can make concentration is 99% or 96%, dissolves molten shape caustic soda, is exactly the finished product solid caustic soda after the cooling.For save energy, the heat major part of coal smoke gas is absorbed.Adopt the mode of preheating to heat, moisture is constantly evaporated.The tradition operating procedure of falling liquid labor strength is big; Potential safety hazard is many; Workman's operational condition poor (baking) in the high-temperature zone; The suspending pump seriously corroded increases maintenance load, and maintenance cost is increased; Thermosteresis is big; Production cycle is long.
Summary of the invention
Technical problem to be solved by this invention is that the deficiency that is directed against prior art provides a kind of alkali production process liquid caustic soda from streaming system.
Technical scheme of the present invention is following:
Sheet alkali production process liquid caustic soda comprises three grades of foreheaters (4), secondary foreheater (6), one-level foreheater (7) from streaming system, and three grades of foreheaters (4), secondary foreheater (6), one-level foreheater (7) are mounted to stepped successively from high to low; Liquid caustic soda flows into three grades of foreheaters (4) the bottom of a pan through liquid-inlet pipe (2) and three grades of foreheater guide shells (3); Hydroful is after secondary foreheater guide shell (5) flows into secondary foreheater (6) the bottom of a pan; Secondary foreheater (6) hydroful is after one-level foreheater guide shell (8) flows into one-level foreheater (7) the bottom of a pan, and one-level foreheater (7) hydroful is after alkali smelting pot liquid-inlet pipe (9) flows into alkali smelting pot (12).
Advantage of the present invention:
1, safety, operator need not often operate to the kitchen range top, away from the perishable hazardous area of high temperature.
2, simple to operate, the past with chain sling manually promote suspending pump one-level one-level successively from the back to going to alkali smelting pot to fall liquid caustic soda, labour intensity is big; Receive high bake simultaneously; Liquid caustic soda flows into automatically after the technological transformation, no longer falls liquid with suspending pump, goes up the kitchen range top and observes liquid level also not for a long time.
3, facility investment reduces, because that caustic soda corrode in the time of 100-230 ℃ is particularly serious, the pump of falling liquid caustic soda 3-5 days portion parts just corrodes bad, and the interior suspending pump of first quarter moon is just scrapped.
4, the former adjusting feed liquor of cover system ball valve has 5, is reduced to 1 at present, and operational ton significantly reduces, and past 1 people operates a stove, can operate 2 or 3 stoves now.
5, owing to not falling liquid, cancelled the operation link of falling liquid, shortened heat-up time, the hot temperature difference loss of pot is avoided with the thermosteresis of falling liquid thereupon.
Economic benefit:
1, reduce by post operation personnel, every table cooker is annual practices thrift 30,000 yuan.
2, economized out 4 suspending pumps and serviceman's wage in every month, 60,000 yuan of annual saving.
3, reduce accident risk, indirect benefit can't be estimated.
4, shorten heat-up time, increase output, reduce thermosteresis, economize on coal, annual every table cooker is practiced thrift 120,000 yuan.
Description of drawings
Fig. 1 is a structural representation of the present invention;
12 alkali smelting pots
11 refractory brick basis
10 liquidometers
9 alkali smelting pot liquid-inlet pipes
8 one-level foreheater guide shells
7 one-level foreheaters
6 secondary foreheaters
5 secondary foreheater guide shells
4 three grades of foreheaters
3 three grades of foreheater guide shells
2 liquid-inlet pipes
1 motorized valve
Embodiment
Below in conjunction with specific embodiment, the present invention is elaborated.
With reference to figure 1; Be mounted to three grades of foreheaters 4, secondary foreheater 6, one-level foreheater 7 stepped successively from high to low; The liquid caustic soda that is stored in storage tank (installation site is higher than header tank) is from flowing to liquid caustic soda header tank (the liquid level pressure difference of utilizing storage tank and header tank to form is flow automatically step by step); Flow to control electric valve 1 and regulate flow, liquid caustic soda flows into three grades of foreheater 4 thes bottom of a pan through liquid-inlet pipe 2 and three grades of foreheater guide shells 3, and hydroful is after secondary foreheater guide shell 5 flows into secondary foreheater 6 thes bottom of a pan; Secondary foreheater 6 hydrofuls are after one-level foreheater guide shell 8 flows into one-level foreheater 7 thes bottom of a pan; One-level foreheater 7 hydrofuls according to liquidometer 10 indication control motorized valves 1 timely adjustment feed liquor amount, replenish each pot liquid level after alkali smelting pot liquid-inlet pipe 9 flows into alkali smelting pot 12; Reach the balance of compensation rate and liquid caustic soda water evaporates amount, thereby reach automatic feed liquor operation purpose.
One group of pot workman only need regulate the feed liquor ball valve and be kept to 1 by 5.The caustic soda that alkali smelting pot boils is delivered to the limit pot with suspending pump again and gets into next link.
2, three foreheater pot edges are located a side and are convinced discharge orifice by patient analysis
Open the pod apertures of Φ 80mm in each foreheater pot edge one side; Make liquid caustic soda form under the effect of liquid level pressure difference at storage tank and liquid caustic soda header tank; From this hole, flow in the next stage pot through thrust-augmenting nozzle, because alkali smelting pot is in the water evaporates process, liquid level constantly descends; This liquid level is passed through the hydrothermal solution alkali after alkali smelting pot guide shell 9 replenishes preheatings by one-level foreheater 7; One-level foreheater liquid level descends again additional through one-level foreheater guide shell 8 by the hydrothermal solution alkali of secondary foreheater 6, and the decline liquid level of secondary foreheater 6 is replenished through secondary foreheater guide shell 5 by three grades of foreheaters 4 again, and the liquid level of three grades of foreheaters 4 descends again additional through three grades of foreheater guide shells 3 by header tank; So circulation, replenishing the liquid level amount can obtain through regulating electronic feed liquor valve feed liquor amount.
3, liquid caustic soda can not directly get in the foreheater, and liquid caustic soda gets into the foreheater the bottom of a pan through thrust-augmenting nozzle, avoids collapsing a pot accident.If the lower liquid caustic soda of temperature, directly get in the foreheater, float over pot in a large number above the interior hydrothermal solution, cause the steam after the heating normally not discharge, when vapour pressure reached certain pressure, steam started together with cold liquid, in pot, sprayed, and pot is collapsed in generation.Can pot cover jack-up very easily be hurted sb.'s feelings when serious.So along the central guide shell that stands like a wall in the pot, make cold liquid flow into the heating kettle bottom through central guide shell earlier in each foreheater, begin heating, can avoid collapsing the generation of pot accident.
Because 12 liquid caustic soda temperature is very high from one-level foreheater 7 to alkali smelting pot, moisture content is also few, so heat alkali liquid can flow directly into and guide shell need not be installed in alkali smelting pot.
When the alkali smelting pot temperature reaches 460 ℃, promptly will reach 96% or 99% high-load alkali and be delivered to the limit pot with suspending pump, impurity and precipitation of iron ions to the bottom of a pan, are added sulphur simultaneously and transfer color; Reach limpid after, with suspending pump liquid caustic soda is delivered to the solid caustic soda header tank again, flow to self-cooled slicing machine cylinder below hydrops groove certainly, the rotation of slicing machine cylinder is stained with liquid caustic soda from the hydrops groove; Be evenly distributed on the cylinder outer wall, because cooling effect, the sticking liquid caustic soda of cylinder outer wall promptly becomes solid base; Carry the cutting knife shovel by slicing machine and fall in the self-cooled worm conveyor, continue cooling, in the rotation course of conveying; With bulk flake caustic cutting frustillatum sheet alkali, deliver to the worm conveyor end automatically, fall in the packing bag; After calculating the weight with electronic scales, use the sack closer tying again, promptly accomplish the whole production flow process.
Water circulating pump is that slicing machine and worm conveyor provide the refrigeration cycle water, and alkali foam withdrawer is used for absorbing the alkali foam that flies up in the wrapping process.High-order water pot is that alkali foam resorber provides molten alkali water, is used to absorb the alkali foam.
Operator are according to preceding pot liquid level, and the open amount of timely adjustment feed liquor motorized valve 1, and then control feed liquor alkali number reach the balance of compensation rate and liquid caustic soda water evaporates amount, thereby reach automatic feed liquor operation.
Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention according to above-mentioned explanation.
Claims (1)
1. a sheet alkali production process liquid caustic soda is characterized in that from streaming system, comprises three grades of foreheaters (4), secondary foreheater (6), one-level foreheater (7), and three grades of foreheaters (4), secondary foreheater (6), one-level foreheater (7) are mounted to stepped successively from high to low; Liquid caustic soda flows into three grades of foreheaters (4) the bottom of a pan through liquid-inlet pipe (2) and three grades of foreheater guide shells (3); Hydroful is after secondary foreheater guide shell (5) flows into secondary foreheater (6) the bottom of a pan; Secondary foreheater (6) hydroful is after one-level foreheater guide shell (8) flows into one-level foreheater (7) the bottom of a pan, and one-level foreheater (7) hydroful dissolves alkali pot (12) after alkali smelting pot liquid-inlet pipe (9) flows into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100659931A CN102616813A (en) | 2012-03-14 | 2012-03-14 | Liquid caustic soda automatic flowing system during production of flake caustic soda |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100659931A CN102616813A (en) | 2012-03-14 | 2012-03-14 | Liquid caustic soda automatic flowing system during production of flake caustic soda |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102616813A true CN102616813A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100659931A Pending CN102616813A (en) | 2012-03-14 | 2012-03-14 | Liquid caustic soda automatic flowing system during production of flake caustic soda |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102616813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432719A (en) * | 2021-06-03 | 2022-12-06 | 深圳德丰荣科技有限公司 | Production process of high-purity caustic soda flakes |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB141942A (en) * | 1919-05-23 | 1920-04-29 | Thomas Minton | Improvements in, and apparatus for, the manufacture of "detached," or flake, causticsoda, or other matter required to be obtained in a state of division from a fused, or molten, mass |
| GB1048782A (en) * | 1964-06-17 | 1966-11-23 | Bertrams Ag Hch | Improvements in apparatus for producing flakes of sodium hydroxide from fluid moltensodium hydroxide |
| CN1911803A (en) * | 2006-08-23 | 2007-02-14 | 天津开发区津粤化工有限公司 | Working system of triple oven type alkali melting furnace kiln and its working method |
| CN101195493A (en) * | 2007-12-20 | 2008-06-11 | 金川集团有限公司 | Method for producing flake caustic |
-
2012
- 2012-03-14 CN CN2012100659931A patent/CN102616813A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB141942A (en) * | 1919-05-23 | 1920-04-29 | Thomas Minton | Improvements in, and apparatus for, the manufacture of "detached," or flake, causticsoda, or other matter required to be obtained in a state of division from a fused, or molten, mass |
| GB1048782A (en) * | 1964-06-17 | 1966-11-23 | Bertrams Ag Hch | Improvements in apparatus for producing flakes of sodium hydroxide from fluid moltensodium hydroxide |
| CN1911803A (en) * | 2006-08-23 | 2007-02-14 | 天津开发区津粤化工有限公司 | Working system of triple oven type alkali melting furnace kiln and its working method |
| CN101195493A (en) * | 2007-12-20 | 2008-06-11 | 金川集团有限公司 | Method for producing flake caustic |
Non-Patent Citations (1)
| Title |
|---|
| 陆和东: "片碱生产过程中节能降耗的探索", 《氯碱工业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432719A (en) * | 2021-06-03 | 2022-12-06 | 深圳德丰荣科技有限公司 | Production process of high-purity caustic soda flakes |
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Application publication date: 20120801 |