CN1047766C - Equipment system suitable for diaphragm caustic soda evaporation process - Google Patents
Equipment system suitable for diaphragm caustic soda evaporation process Download PDFInfo
- Publication number
- CN1047766C CN1047766C CN96112547A CN96112547A CN1047766C CN 1047766 C CN1047766 C CN 1047766C CN 96112547 A CN96112547 A CN 96112547A CN 96112547 A CN96112547 A CN 96112547A CN 1047766 C CN1047766 C CN 1047766C
- Authority
- CN
- China
- Prior art keywords
- alkali
- tank
- transfer lime
- pump
- cooling
- 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.)
- Expired - Fee Related
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title claims abstract description 26
- 235000011121 sodium hydroxide Nutrition 0.000 title claims abstract description 9
- 238000001704 evaporation Methods 0.000 title claims abstract description 8
- 230000008020 evaporation Effects 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title abstract 3
- 239000003513 alkali Substances 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 22
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 22
- 239000004571 lime Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 abstract description 5
- 239000002585 base Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000019600 saltiness Nutrition 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
An equipment system suitable for a diaphragm caustic soda evaporation process is mainly characterized in that the position difference between a discharge hole of a wiped film evaporator and a feeding level line of an alkali discharge tank is not less than 5.9m, and the middle of the wiped film evaporator is connected by a conveying pipe g; the alkali discharge tank is connected with a valve J1After being connected with the circulating cooling system, the circulating cooling system is connected with a microporous filter with the aperture phi of less than 180 mu m by an alkali pump and then connected with a finished product tank. The invention has simple and convenient operation of alkali discharge, less occupied equipment and low cost, and can filter once by adopting the microporous filter with the diameter of less than 180 mu m to ensure that the salt content meets the requirement, thereby having good product quality. The invention is used in the alkali making process for producing concentrated alkali by using the wiped film evaporator.
Description
The present invention relates to be used in a kind of chlorine industry the device systems of evaporating caustic soda technology, particularly utilize luwa evaporator to produce the device systems of concentrated base.
The at present domestic device systems that utilizes luwa evaporator to produce concentrated base, as shown in Figure 2, luwa evaporator 1 is through joint valve J
8Reach transfer lime g and connect alkali tank 2, connect the joint valve J of vacuum system on the alkali tank 2 in addition
9The joint valve J that reaches transfer lime and communicate with the outer atmosphere of jar
7And transfer lime.Alkali tank 2 is through joint valve J
1Then earlier through line pump 11, joint valve J
6, tundish 10, joint valve J
5Connect again by cooling pump 3, joint valve J
2, the circulating cooling system formed of water cooler 4, cooling tank 5.By cooling tank 5 through joint valve J
3, alkali feeding pump 6, joint valve J
4Connect mechanical strumbox 12, be connected into the product jar by the mechanical filter case.
The subject matter that prior art exists is: 1) put the alkali troublesome poeration, it is many to take equipment.Because luwa evaporator 1, alkali tank 2 all will keep vacuum state when steaming alkali, promptly save valve J
8, J
9Open, cause negative pressure to pond 9 water sprays, luwa evaporator and alkali tank are vacuumized this time valve J by jet condenser 8
7, J
1Must close.And fill with need put alkali the time when alkali tank 2, then again must be with J
9, J
9Close, with J
7Open, destroy the vacuum state of alkali tank, open J then
1Could alkali lye be extracted into tundish 10 by line pump 11 places.2) the mechanical filter case is used to analyse salt and can not satisfies the quality product requirement.Because utilize luwa evaporator to concentrate alkali, material residence time in device is short, and concentration increases fast, the salt crystalline particle of separating out under water cooler chilling condition is little, diameter phi≤180 μ m, thus can't be with the mechanical filter case with the salt filtering, and the content of the finished product salt of making does not reach quality index.
The purpose of this invention is to provide a kind of easy and simple to handle, to take equipment few, and can make the device systems that is applicable to the diaphragm caustic soda evaporation technology of better quality alkali.
The object of the present invention is achieved like this: the potential difference between the material loading bit line of the discharge port of luwa evaporator and alkali tank is no less than 5.9m, and the centre is connected by transfer lime g; Alkali tank is through joint valve J
1And transfer lime connects the import of cooling pump; The cooling pump outlet is through joint valve J
2And transfer lime connects water cooler, connects cooling tank by water cooler again, then by cooling tank again through J
XTake back the import of cooling pump, constitute circulating cooling system; The outlet of cooling tank is through joint valve J
3Reach the import that transfer lime g picks alkali pump, the outlet of alkali feeding pump is through joint valve J
4And transfer lime connects the millipore filter of aperture φ＜180 μ m, the outlet connection finished product jar of millipore filter.
Purpose of the present invention can also following manner realize: the potential difference between the material loading bit line of the discharge port of luwa evaporator and alkali tank is 5.9m, and the centre is connected by transfer lime g.
Millipore filter is a PE pipe millipore filter.
The present invention has following remarkable advantage: 1) easy and simple to handle, it is few to take equipment.Contrast Fig. 1, Fig. 2 as can be seen, the present invention has lacked joint valve J than prior art
7, J
8, J
9, J
5, J
6And line pump 11 tundish 10 and corresponding transfer lime, it is easy greatly to put the alkali operation simultaneously, because under the state that luwa evaporator vacuumizes, potential difference between the material loading bit line of the discharge port of luwa evaporator and alkali tank is no less than 5.9m, alkali tank just needn't vacuumize, material (concentrated base) will drop to alkali tank naturally, and can not enter in the luwa evaporator.2) change the millipore filter that the mechanical filter case is aperture φ＜180 μ m, can make the saltiness of concentrated base promptly reach specification of quality through once filtering.Millipore filter compact construction, cost are also lower, and filter core can repeatedly use, and is easy and simple to handle, and maintenance cycle is long.
Elaborate below in conjunction with accompanying drawing:
Fig. 1 present device system architecture synoptic diagram;
Fig. 2 prior art structural representation.
Referring to Fig. 1, cause negative pressure that luwa evaporator 1 is vacuumized by jet condenser 8 to pond 9 water sprays, it is worked under vacuum state.Luwa evaporator 1 directly is connected with alkali tank 2 by transfer lime, potential difference between the material loading bit line of the discharge port of luwa evaporator 1 and alkali tank 2 should be no less than 5.9m, also be that delivery tube between the two should guarantee to make the discharge port of luwa evaporator to be higher than the material loading bit line 5.9m of alkali tank 2 or more than the 5.9m, otherwise can not guarantee automatic blanking.Alkali tank 2 communicates with atmosphere, need not seal to vacuumize.Alkali tank 2 is through joint valve J
1And transfer lime connects the import of cooling pump 3.The outlet of cooling pump 3 is through joint valve J
2And transfer lime connects water cooler 4, connects cooling tank 5 through transfer lime again, then by cooling tank 5 again through J
XTake back the import of cooling pump 3, constitute circulating cooling system.The outlet of cooling tank 5 is through joint valve J
3Reach the import that transfer lime g picks alkali pump 6, the outlet of alkali feeding pump 6 is through joint valve J
4And transfer lime g connects the millipore filter 7 of aperture φ＜180 μ m, the outlet connection finished product jar of millipore filter.Millipore filter can adopt PE pipe millipore filter, also can adopt the millipore filter of other material for core certainly, as the material of charcoal element and other alkali corrosion resistance, or other matrix material, the aperture of strainer tube micropore is necessary for φ＜180um.
Claims (3)
1, a kind of device systems that is applicable to the diaphragm caustic soda evaporation technology is characterized in that: the potential difference between the material loading bit line of the discharge port of luwa evaporator (1) and alkali tank (2) is no less than 5.9m, and the centre is connected by transfer lime (g); Alkali tank (2) is through joint valve (J
1) and transfer lime connect the import of cooling pump (3); The outlet of cooling pump (3) is through joint valve (J
2) and transfer lime connect water cooler (4), connect cooling tank (5) by water cooler (4) again, then by cooling tank (5) again through (J
X) take back the import of cooling pump (3), constitute circulating cooling system; The outlet of cooling tank (5) is through joint valve (J
3) and transfer lime (g) pick the import of alkali pump (6), the outlet of alkali feeding pump (6) is through joint valve (J
4) and transfer lime connect the millipore filter (7) of aperture φ＜180 μ m, the outlet of millipore filter connects the finished product jar.
2, the device systems that is applicable to the diaphragm caustic soda evaporation technology according to claim 1 is characterized in that: the potential difference between the material loading bit line of the discharge port of luwa evaporator (1) and alkali tank (2) is 5.9m, and the centre is connected by transfer lime (g).
3, the device systems that is applicable to the diaphragm caustic soda evaporation technology according to claim 1 is characterized in that: millipore filter is a PE pipe millipore filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96112547A CN1047766C (en) | 1996-09-14 | 1996-09-14 | Equipment system suitable for diaphragm caustic soda evaporation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96112547A CN1047766C (en) | 1996-09-14 | 1996-09-14 | Equipment system suitable for diaphragm caustic soda evaporation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1149551A CN1149551A (en) | 1997-05-14 |
| CN1047766C true CN1047766C (en) | 1999-12-29 |
Family
ID=5121493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96112547A Expired - Fee Related CN1047766C (en) | 1996-09-14 | 1996-09-14 | Equipment system suitable for diaphragm caustic soda evaporation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1047766C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4383887A (en) * | 1980-07-11 | 1983-05-17 | Bertrams Ag | Process and apparatus for the concentration of an alkaline solution |
-
1996
- 1996-09-14 CN CN96112547A patent/CN1047766C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4383887A (en) * | 1980-07-11 | 1983-05-17 | Bertrams Ag | Process and apparatus for the concentration of an alkaline solution |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1149551A (en) | 1997-05-14 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |