CN101966997A - Process and device for producing pyrotechnite from sodium sulfate decahydrate - Google Patents

Process and device for producing pyrotechnite from sodium sulfate decahydrate Download PDF

Info

Publication number
CN101966997A
CN101966997A CN 201010525122 CN201010525122A CN101966997A CN 101966997 A CN101966997 A CN 101966997A CN 201010525122 CN201010525122 CN 201010525122 CN 201010525122 A CN201010525122 A CN 201010525122A CN 101966997 A CN101966997 A CN 101966997A
Authority
CN
China
Prior art keywords
vaporizer
sodium sulfate
thenardite
saltcake
evaporator
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.)
Granted
Application number
CN 201010525122
Other languages
Chinese (zh)
Other versions
CN101966997B (en
Inventor
翁关云
周光明
洪厚军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Ruineng Anticorrosion Equipment Co ltd
Original Assignee
JIANGSU RUIPU FILM TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGSU RUIPU FILM TECHNOLOGY Co Ltd filed Critical JIANGSU RUIPU FILM TECHNOLOGY Co Ltd
Priority to CN2010105251224A priority Critical patent/CN101966997B/en
Publication of CN101966997A publication Critical patent/CN101966997A/en
Application granted granted Critical
Publication of CN101966997B publication Critical patent/CN101966997B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

The invention relates to a process and a device for producing pyrotechnite from sodium sulfate decahydrate. The process comprises the following steps of: (1) putting the sodium sulfate decahydrate into a hot melting tank for hot melting to form solution of sodium sulfate; (2) heating the solution of sodium sulfate, conveying the solution of sodium sulfate to an evaporator, concentrating and evaporating the solution of sodium sulfate, and crystallizing and precipitating part of anhydrous sodium sulfate; (3) compressing secondary steam of the evaporator, conveying the compressed steam to a heating chamber of the evaporator; and (4) performing solid-liquid separation on the dissolved solution of sodium sulfate to obtain solid anhydrous sodium sulfate, and drying, weighing and packaging. The device comprises the heat melting tank, a liquor storage tank, a feed delivery pump, a heat exchanger and the evaporator which are connected sequentially, wherein the evaporator is sequentially connected with a centrifugal machine, a mother liquor tank, a mother liquor pump and a feed inlet of the evaporator; and the evaporator is provided with a vacuum pump, and a steam outlet of the evaporator is connected with a separator, a compressor and the heating chamber of the evaporator. In the process and the device, the sodium sulfate decahydrate is subjected to melting evaporation through the technology of steam compression, so the evaporating energy consumption can be reduced, and the purity of products can reach over 99 percent; and the process and the device require investments, are high in economic benefits and save energy greatly.

Description

A kind of technology and device thereof of producing thenardite by sal glauberi
Technical field
The present invention relates to chemical technique and equipment technology field, especially a kind of by the technology of sal glauberi production thenardite and the device that is used for this technology.
Background technology
The processing method that existing chemical enterprise is produced thenardite with sal glauberi (mirabilite hydrate) generally has following several: steam heating, heat pipe heating, warm air drying, existing one ton of thenardite of the every production of chemical enterprise need consume steam 0.8-1.6 ton, power consumption 40-60kwh.The energy consumption of existing large-scale multi-effect evaporating device is less, consumes steam 0.6-1.2 ton usually, but the scale of investment of large-scale multi-effect evaporating device is big, floor space big, complex structure.
At present, the domestic chemical enterprise that many by-product saltcake are arranged, the saltcake production capacity of these enterprises is limited, can't invest large-scale plant, causes saltcake production energy consumption height, even can't handle the saltcake of by-product, makes economic benefit of enterprises lower.
Summary of the invention
Deficiency at above existing technology and equipment, the object of the present invention is to provide the method for producing thenardite by sal glauberi,, and adopt the vapour compression technology to evaporate by the fusion sal glauberi, to reduce the evaporation energy consumption, carry out centrifugal, drying again and obtain thenardite.
The objective of the invention is by realizing by the following technical solutions:
Technology by sal glauberi is produced thenardite may further comprise the steps:
(1) temperature in the saltcake hot melt tank is controlled at 33-90 ℃, sal glauberi is dropped into fusion in the saltcake hot melt tank, form metabisulfite solution;
(2) with the metabisulfite solution of step (1) gained, after heating, deliver into vaporizer, concentration and evaporation in vaporizer, the crystallization of part anhydrous sodium sulphate is separated out;
(3) will be from the secondary steam of described vaporizer output, compressed machine compression, compression ratio maintains 1:1.2 to 1:2.5, pressure, temperature rising, the heat content of steam are increased, deliver to the heating chamber of described vaporizer then and be used as the heating steam use, make feed liquid keep boiling state, and make heating steam itself be condensed into water;
(4) partial crystallization that step (2) the is obtained metabisulfite solution of separating out carries out solid-liquid separation through whizzer, obtains solid water-free sodium sulfate, and the solution Returning evaporimeter further concentrates.
As the preferred technical solution of the present invention, regulate pressure in the described vaporizer by vacuum pump in the described step (2), make the boiling point lowering of water, thereby make the metabisulfite solution in the vaporizer need not heating and directly explosive evaporatoin.
As the preferred technical solution of the present invention, the temperature range of the direct explosive evaporatoin of metabisulfite solution is controlled at 40-90 ℃ in the described step (2).
As the preferred technical solution of the present invention, the water of condensation that step (3) is produced delivers into the described metabisulfite solution heat exchange that interchanger and step (1) produce, with the temperature of raising metabisulfite solution; And then with the delivery after the heat exchange to hot melt tank heating sal glauberi.
As the preferred technical solution of the present invention, with the anhydrous sodium sulphate that produces in the step (4), remove the micro-moisture that adheres to through super-dry, reach the moisture requirement of finished product, the packing of weighing again.
Produce the device of thenardite by sal glauberi, comprise saltcake hot melt tank, saltcake reservoir, dehvery pump, vaporizer, whizzer, centrifuge mother liquor groove, centrifuge mother liquor pump, dryer and weighing-packaging machine, described saltcake hot melt tank is communicated with the saltcake reservoir, and the saltcake reservoir is connected with the opening for feed of described vaporizer by dehvery pump and pipeline;
The discharge port of described vaporizer is connected with whizzer by feeding pipe, and whizzer is connected with the opening for feed of centrifuge mother liquor groove, centrifuge mother liquor pump and described vaporizer successively by pipeline;
Described whizzer is connected with weighing-packaging machine with dryer successively by pay-off.
As the preferred technical solution of the present invention, also be provided with interchanger between described saltcake reservoir and the described vaporizer, the saltcake reservoir is connected with the import of interchanger by dehvery pump and pipeline, and the outlet of interchanger is connected with the opening for feed of vaporizer.
As the preferred technical solution of the present invention, described device also comprises condensate pump, and the condensation-water drain of described vaporizer is connected with the import of interchanger with pipeline by condensate pump.
As the preferred technical solution of the present invention, the vapour outlet of described vaporizer is connected with the heating chamber of separator, compressor and vaporizer successively by pipeline.
As the preferred technical solution of the present invention, described device also comprises vacuum pump, and described vacuum pump is connected with the material chamber of described vaporizer by pipeline.
The invention has the beneficial effects as follows: with respect to prior art, the present invention is by the fusion sal glauberi, and adopt the vapour compression technology to evaporate, to reduce the evaporation energy consumption, to carry out centrifugal, drying again and obtain thenardite, product purity can reach more than 99%, meet national product quality standard GB/T6009-2003, one ton of saltcake power consumption of every production is between 90-130kwh, and energy consumption is evaporated more than the energy-conservation 50-70% with respect to common steam, has very high economic benefit.
Technical process of the present invention is short, apparatus structure is compact, floor space is little, requisite space is also little, and need not circulating water cooling system.The present invention can reduce investment outlay, and can obtain energy-saving effect preferably again.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is the structural representation of apparatus of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and specific embodiment:
As depicted in figs. 1 and 2, the technology by sal glauberi is produced thenardite may further comprise the steps:
(1) by heating rod or heating coil in the saltcake hot melt tank 1, the temperature in the hot melt tank 1 is controlled at 33-90 ℃, sal glauberi is dropped into fusion in the saltcake hot melt tank 1, form metabisulfite solution;
(2) with the metabisulfite solution of step (1) gained, after heating, deliver into vaporizer 5, concentration and evaporation in vaporizer 5, the crystallization of part anhydrous sodium sulphate is separated out;
(3) will be from the secondary steam of described vaporizer 5 outputs, compressed machine 7 compressions, compression ratio maintains 1:1.2 to 1:2.5, pressure, temperature rising, the heat content of steam are increased, deliver to the heating chamber of described vaporizer 5 then and be used as the heating steam use, make feed liquid keep boiling state, and make heating steam itself be condensed into water;
(4) partial crystallization that step (2) the is obtained metabisulfite solution of separating out carries out solid-liquid separation through whizzer 10, obtains solid water-free sodium sulfate, and solution Returning evaporimeter 5 further concentrates.
(5) with the solid water-free sodium sulfate that produces in the step (4), remove the micro-moisture that adheres to, reach the moisture requirement of finished product, the packing of weighing again through super-dry.
As the present invention's embodiment preferably, in described step (2), by the pressure in the described vaporizer 5 of vacuum pump 8 adjustings, make the boiling point lowering of water, thereby make the metabisulfite solution in the vaporizer 5 need not heating and directly explosive evaporatoin, the temperature range of the direct explosive evaporatoin of metabisulfite solution is controlled at 40-90 ℃ in the described step (2).The water of condensation that step (3) is produced delivers into the described metabisulfite solution heat exchange that interchanger 4 and step (1) produce, to improve the temperature of metabisulfite solution; And then with the delivery after the heat exchange to hot melt tank 1 heating sal glauberi, to cut down the consumption of energy, save the energy.
As shown in Figure 2, produce the device of thenardite by sal glauberi, comprise saltcake hot melt tank 1, saltcake reservoir 2, dehvery pump 3, vaporizer 5, whizzer 10, centrifuge mother liquor groove 11, centrifuge mother liquor pump 12, dryer 13 and weighing-packaging machine 14, described saltcake hot melt tank 1 is communicated with saltcake reservoir 2, and saltcake reservoir 2 is connected with the opening for feed of described vaporizer 5 by dehvery pump 3 and pipeline; The discharge port of described vaporizer 5 is connected with whizzer 10 by feeding pipe, and whizzer 10 is connected with centrifuge mother liquor groove 11, centrifuge mother liquor pump 12 and the opening for feed of described vaporizer 5 successively by pipeline; Described whizzer 10 is connected with weighing-packaging machine 14 with dryer 13 successively by pay-off.
In the present embodiment, also be provided with interchanger 4 between described saltcake reservoir 2 and the described vaporizer 5, saltcake reservoir 2 is connected with the import of interchanger 4 by dehvery pump 3 and pipeline, and the outlet of interchanger 4 is connected with the opening for feed of vaporizer 5.Present embodiment also comprises vacuum pump 8 and condensate pump 9, and described vacuum pump 8 is connected with the material chamber of described vaporizer 5 by pipeline, is used to reduce the boiling point of feed liquid in the vaporizer 5.Import with interchanger 4 is connected the condensation-water drain of vaporizer 5 with pipeline by condensate pump 9, is used to improve the temperature of metabisulfite solution, simultaneously the delivery after the heat exchange is heated sal glauberi to hot melt tank 1, to save the energy, to cut down the consumption of energy.The vapour outlet of described vaporizer 5 is connected with separator 6, compressor 7 and the heating chamber of vaporizer 5 successively by pipeline, by compression pressure, temperature rising, the heat content of steam are increased, deliver to the heating chamber of vaporizer 5 then and be used as the heating steam use, make the feed liquid in the vaporizer 5 keep boiling state, and make heating steam itself be condensed into water.In the present embodiment, the material of described interchanger 4 and vaporizer 5 all adopts the 316L stainless steel.

Claims (10)

1. technology of producing thenardite by sal glauberi is characterized in that may further comprise the steps:
(1) temperature in the saltcake hot melt tank is controlled at 33-90 ℃, sal glauberi is dropped into fusion in the saltcake hot melt tank, form metabisulfite solution;
(2) with the metabisulfite solution of step (1) gained, after heating, deliver into vaporizer, concentration and evaporation in vaporizer, the crystallization of part anhydrous sodium sulphate is separated out;
(3) will be from the secondary steam of described vaporizer output, compressed machine compression, compression ratio maintains 1:1.2 to 1:2.5, pressure, temperature rising, the heat content of steam are increased, deliver to the heating chamber of described vaporizer then and be used as the heating steam use, make feed liquid keep boiling state, and make heating steam itself be condensed into water;
(4) partial crystallization that step (2) the is obtained metabisulfite solution of separating out carries out solid-liquid separation through whizzer, obtains solid water-free sodium sulfate, and the solution Returning evaporimeter further concentrates.
2. technology of producing thenardite by sal glauberi according to claim 1, it is characterized in that: regulate pressure in the described vaporizer by vacuum pump in the described step (2), make the boiling point lowering of water, thereby make the metabisulfite solution in the vaporizer need not heating and directly explosive evaporatoin.
3. technology of producing thenardite by sal glauberi according to claim 2 is characterized in that: the temperature range of the direct explosive evaporatoin of metabisulfite solution is controlled at 40-90 ℃ in the described step (2).
4. technology of producing thenardite by sal glauberi according to claim 1 is characterized in that: the water of condensation that step (3) is produced delivers into the described metabisulfite solution heat exchange that interchanger and step (1) produce, with the temperature of raising metabisulfite solution; And then with the delivery after the heat exchange to hot melt tank heating sal glauberi.
5. technology of producing thenardite by sal glauberi according to claim 1 is characterized in that: with the anhydrous sodium sulphate that produces in the step (4), remove the micro-moisture that adheres to through super-dry, reach the moisture requirement of finished product, the packing of weighing again.
6. device of producing thenardite by sal glauberi, it is characterized in that: described device comprises saltcake hot melt tank, saltcake reservoir, dehvery pump, vaporizer, whizzer, centrifuge mother liquor groove, centrifuge mother liquor pump, dryer and weighing-packaging machine, described saltcake hot melt tank is communicated with the saltcake reservoir, and the saltcake reservoir is connected with the opening for feed of described vaporizer by dehvery pump and pipeline;
The discharge port of described vaporizer is connected with whizzer by feeding pipe, and whizzer is connected with the opening for feed of centrifuge mother liquor groove, centrifuge mother liquor pump and described vaporizer successively by pipeline;
Described whizzer is connected with weighing-packaging machine with dryer successively by pay-off.
7. the device of producing thenardite by sal glauberi according to claim 6, it is characterized in that: also be provided with interchanger between described saltcake reservoir and the described vaporizer, the saltcake reservoir is connected with the import of interchanger by dehvery pump and pipeline, and the outlet of interchanger is connected with the opening for feed of vaporizer.
8. the device by sal glauberi production thenardite according to claim 7, it is characterized in that: described device also comprises condensate pump, the condensation-water drain of described vaporizer is connected with the import of interchanger with pipeline by condensate pump.
9. according to claim 6 or 7 described devices by sal glauberi production thenardite, it is characterized in that: the vapour outlet of described vaporizer is connected with the heating chamber of separator, compressor and vaporizer successively by pipeline.
10. according to claim 6 or 7 described devices by sal glauberi production thenardite, it is characterized in that: described device also comprises vacuum pump, and described vacuum pump is connected with the material chamber of described vaporizer by pipeline.
CN2010105251224A 2010-10-29 2010-10-29 Process and device for producing pyrotechnite from sodium sulfate decahydrate Active CN101966997B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105251224A CN101966997B (en) 2010-10-29 2010-10-29 Process and device for producing pyrotechnite from sodium sulfate decahydrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105251224A CN101966997B (en) 2010-10-29 2010-10-29 Process and device for producing pyrotechnite from sodium sulfate decahydrate

Publications (2)

Publication Number Publication Date
CN101966997A true CN101966997A (en) 2011-02-09
CN101966997B CN101966997B (en) 2012-07-25

Family

ID=43546241

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105251224A Active CN101966997B (en) 2010-10-29 2010-10-29 Process and device for producing pyrotechnite from sodium sulfate decahydrate

Country Status (1)

Country Link
CN (1) CN101966997B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102180487A (en) * 2011-03-30 2011-09-14 湖南新澧化工有限公司 Method for recycling saltpeter-production dead steam
CN102320630A (en) * 2011-09-05 2012-01-18 湖南衡阳新澧化工有限公司 Production method of anhydrous sodium sulfate and production equipment thereof
CN102745755A (en) * 2011-10-25 2012-10-24 河北凯徳生物材料有限公司 Process for recovering sodium sulfate crystal in sebacic acid production
CN103318924A (en) * 2013-06-25 2013-09-25 代元军 Energy-saving equipment and energy-saving method for smelting mine by virtue of waste heat
CN104310437A (en) * 2014-10-11 2015-01-28 中国轻工业长沙工程有限公司 Technique for preparing anhydrous nitre from mirabilite
CN104528770A (en) * 2014-12-23 2015-04-22 湘潭大学 Mirabilite dehydration method based on gas-liquid direct heat exchange
CN107867709A (en) * 2017-12-11 2018-04-03 广州叶林环保科技有限公司 A kind of processing technology for being concentrated by evaporation aqueous sodium persulfate solution crystallization
CN107899525A (en) * 2017-11-24 2018-04-13 岳阳湘茂医药化工有限公司 A kind of open type enamel concentration kettle
CN110240181A (en) * 2019-06-06 2019-09-17 浙江天地环保科技有限公司 A kind of dehydration and drying system and method freezing saltcake
CN111533142A (en) * 2020-06-04 2020-08-14 新疆中泰化学阜康能源有限公司 Circular production method for heating precipitated anhydrous sodium sulphate, cooling, crystallizing and concentrating

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49120895A (en) * 1973-03-22 1974-11-19
CN1327949A (en) * 2000-06-08 2001-12-26 徐万清 Cool-hot fusion method for preparing anhydrous sodium sulfate and its hot-fusion tower
CN201864580U (en) * 2010-10-29 2011-06-15 江苏瑞普膜技术有限公司 Device producing thenardite by sodium sulfate decahydrate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49120895A (en) * 1973-03-22 1974-11-19
CN1327949A (en) * 2000-06-08 2001-12-26 徐万清 Cool-hot fusion method for preparing anhydrous sodium sulfate and its hot-fusion tower
CN201864580U (en) * 2010-10-29 2011-06-15 江苏瑞普膜技术有限公司 Device producing thenardite by sodium sulfate decahydrate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《华北工学院学报》 20011231 李淑萍等 用真空蒸发结晶法制取无水硫酸钠 57-60 1-10 第22卷, 第1期 2 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102180487A (en) * 2011-03-30 2011-09-14 湖南新澧化工有限公司 Method for recycling saltpeter-production dead steam
CN102320630A (en) * 2011-09-05 2012-01-18 湖南衡阳新澧化工有限公司 Production method of anhydrous sodium sulfate and production equipment thereof
CN102745755A (en) * 2011-10-25 2012-10-24 河北凯徳生物材料有限公司 Process for recovering sodium sulfate crystal in sebacic acid production
CN103318924A (en) * 2013-06-25 2013-09-25 代元军 Energy-saving equipment and energy-saving method for smelting mine by virtue of waste heat
CN104310437A (en) * 2014-10-11 2015-01-28 中国轻工业长沙工程有限公司 Technique for preparing anhydrous nitre from mirabilite
CN104528770A (en) * 2014-12-23 2015-04-22 湘潭大学 Mirabilite dehydration method based on gas-liquid direct heat exchange
CN107899525A (en) * 2017-11-24 2018-04-13 岳阳湘茂医药化工有限公司 A kind of open type enamel concentration kettle
CN107867709A (en) * 2017-12-11 2018-04-03 广州叶林环保科技有限公司 A kind of processing technology for being concentrated by evaporation aqueous sodium persulfate solution crystallization
CN110240181A (en) * 2019-06-06 2019-09-17 浙江天地环保科技有限公司 A kind of dehydration and drying system and method freezing saltcake
CN111533142A (en) * 2020-06-04 2020-08-14 新疆中泰化学阜康能源有限公司 Circular production method for heating precipitated anhydrous sodium sulphate, cooling, crystallizing and concentrating

Also Published As

Publication number Publication date
CN101966997B (en) 2012-07-25

Similar Documents

Publication Publication Date Title
CN101966997B (en) Process and device for producing pyrotechnite from sodium sulfate decahydrate
CN102320575B (en) Method for evaporating sodium persulfate at low temperature
CN204952342U (en) Concentrated crystal system of carnallite solution
CN105174290A (en) Separation process of potassium salt and sodium salt in concentrated brine
CN206508573U (en) A kind of function of mechanical steam recompression evaporation and crystallization system of high-salt wastewater
CN203525333U (en) MVR (Mechanical Vapor Recompression) evaporator
CN101874938A (en) Forced circulation continuous crystallization system with mechanical vapor recompression function
CN105056565A (en) Device and method for evaporation and crystallization of sodium gluconate solution
CN202983239U (en) Evaporating concentration system
CN201864580U (en) Device producing thenardite by sodium sulfate decahydrate
CN209221515U (en) A kind of lithium chloride evaporation concentration device
CN102267717B (en) Process for preparing zinc sulfate by evaporation and crystallization
CN204891247U (en) Sodium nitrate solution evaporation crystallization equipment
CN103508877A (en) Energy-saving method and device for four-effect concentration and crystallization of itaconic acid
CN103373747A (en) Evaporation concentration method of yeast wastewater
CN102515202A (en) Method for producing ionic membrane flake caustic by using fire coal falling film method
CN202226659U (en) Equipment evaporating sodium persulfate with low temperature
CN203938477U (en) The chlorine dioxide generator under vacuum condition with evaporation, reactive crystallization
CN102336419B (en) Equipment special for producing bulk wet salt by using sodium sulfate type brine
CN205627127U (en) MVR triple -effect evaporator
CN104524806A (en) Urotropin complete continuous crystallization production technology and equipment
CN211215473U (en) Fluorescent brightener waste liquid enrichment facility
CN201737866U (en) Furfuraldehyde production afterheat utilization system
CN102838180A (en) Rare metal wastewater zero discharge process
CN203090493U (en) Combined multi-effect plate type evaporation and flash evaporation concentration device for solution of polyethylene glycol

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: JIANGSU RUIPU ANTICORROSION EQUIPMENT CO., LTD.

Free format text: FORMER OWNER: JIANGSU RUIPU MEMBRANE TECHNOLOGY CO., LTD.

Effective date: 20120507

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20120507

Address after: 225500 private economy industrial center, Taizhou, Jiangsu, Jiangyan

Applicant after: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Address before: 225500 No. 369 Renmin South Road, Taizhou, Jiangsu, Jiangyan

Applicant before: JIANGSU RUIPU FILM TECHNOLOGY Co.,Ltd.

C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Process and device for producing pyrotechnite from sodium sulfate decahydrate

Effective date of registration: 20130507

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2013990000266

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20140715

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2013990000266

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Process and device for producing pyrotechnite from sodium sulfate decahydrate

Effective date of registration: 20140716

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2014990000577

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20160218

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2014990000577

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Process and device for producing pyrotechnite from sodium sulfate decahydrate

Effective date of registration: 20160218

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2016990000123

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20170124

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2016990000123

PC01 Cancellation of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Process and device for producing pyrotechnite from sodium sulfate decahydrate

Effective date of registration: 20170214

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2017990000102

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20171207

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2017990000102

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Process and device for producing pyrotechnite from sodium sulfate decahydrate

Effective date of registration: 20180116

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2018990000044

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20181210

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2018990000044

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Process and device for producing pyrotechnite from sodium sulfate decahydrate

Effective date of registration: 20190130

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

Registration number: 2019990000101

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20200330

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Company limited by guarantee

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT Co.,Ltd.

Registration number: 2019990000101

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Process and device for producing pyrotechnite from sodium sulfate decahydrate

Effective date of registration: 20200330

Granted publication date: 20120725

Pledgee: Taizhou Guoxin Financing Guarantee Co.,Ltd.

Pledgor: JIANGSU RUINENG ANTICORROSION EQUIPMENT Co.,Ltd.

Registration number: Y2020990000243

CP01 Change in the name or title of a patent holder

Address after: 225500 Jiangyan Private Economy Industry Center, Taizhou City, Jiangsu Province

Patentee after: Jiangsu Ruineng Anticorrosion Equipment Co.,Ltd.

Address before: 225500 Jiangyan Private Economy Industry Center, Taizhou City, Jiangsu Province

Patentee before: JIANGSU RUINENG ANTICORROSION EQUIPMENT CO.,LTD.

CP01 Change in the name or title of a patent holder