CN1061761A - A kind of method of producing sodium bicarbonate - Google Patents
A kind of method of producing sodium bicarbonate Download PDFInfo
- Publication number
- CN1061761A CN1061761A CN 90109423 CN90109423A CN1061761A CN 1061761 A CN1061761 A CN 1061761A CN 90109423 CN90109423 CN 90109423 CN 90109423 A CN90109423 A CN 90109423A CN 1061761 A CN1061761 A CN 1061761A
- Authority
- CN
- China
- Prior art keywords
- sodium bicarbonate
- sodium
- alkali
- ammonia
- washings
- 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.)
- Pending
Links
Images
Abstract
A kind of method of producing sodium bicarbonate, it is to adopt methods such as solvay soda process, connection alkaline process or the metathesis of sodium-chlor bicarbonate of ammonia to produce heavy alkali earlier, and heavy alkali is made suspension liquid, adopted and remove ammonia and washings washing methods and remove yellow soda ash, sodium-chlor, bicarbonate of ammonia, ammonium chloride in the heavy alkali respectively.The present invention produces sodium bicarbonate with soda ash again owing to do not need soda ash is made in the weight alkali calcining decomposition earlier after carbonization, so not only technology is simple, save energy reduces and pollutes, and reduced production cost.
Description
The present invention relates to a kind of method of producing sodium bicarbonate.
Usually, sodium bicarbonate (NaHCO
3) suitability for industrialized production be with sodium-chlor (NaCl), ammonia (NH
3), carbonic acid gas (CO
2) be raw material.Employing solvay soda process, connection alkaline process or sodium-chlor bicarbonate of ammonia double decomposition are made the sodium bicarbonate (that is: heavy alkali) that contains more impurity earlier, in order to produce sodium bicarbonate, need that all the way that heavy alkali employing calcining and decomposing promptly heats at first will be weighed alkali and make soda ash (Na
2CO
3), and then soda ash is carried out carbonization, filtration, washing, drying process make sodium bicarbonate.Its reaction formula is:
(or
）
Above method is because the heavy alkali thermal degradation that all needs to make is made soda ash, then with the soda ash carbonization, after filtration, technology such as washing, drying just can make qualified sodium bicarbonate, so not only need a large amount of right material (obtain one ton of soda ash only thermal degradation operation with regard to 620,000 kilocalories of heat requirements), and technological process is complicated, when weighing the alkali thermal degradation, often there is ground caustic to overflow, polluted environment.
The object of the present invention is to provide a kind of method that alkali can be produced sodium bicarbonate that weighs of directly utilizing at normal temperatures.
The present invention is achieved in that the employing solvay soda process, connection alkaline process or sodium-chlor, methods such as bicarbonate of ammonia metathesis are at first produced heavy alkali, to weigh alkali then and make yellow soda ash sodium bicarbonate suspension liquid, add in the carbonating tower or feed gas in the sieve-tray tower ammonia is driven away, adopt sulfuric acid or hydrochloric acid or nitric acid washings after filtering or adopt sodium bicarbonate, yellow soda ash, sodium sulfate, SODIUMNITRATE, the mixture washings that sodium-chlor is formed carries out the washing first time, remove sodium-chlor, yellow soda ash and more a spot of bicarbonate of ammonia and ammonium chloride impurity, water or arbon dioxide solution carry out the washing second time then, remove sodium-chlor, yellow soda ash, sodium sulfate, SODIUMNITRATE impurity can be produced content and be 99%～99.9% sodium bicarbonate after drying.
Describe the present invention below by embodiment:
Fig. 1 is a process flow sheet of the present invention.
Fig. 2 is the process flow sheet of 98% sodium bicarbonate for production content among the embodiment 1.
Fig. 3 is the technological process of production figure of embodiment 2.
Embodiment one,
The present embodiment the first step is to utilize sodium-chlor, the bicarbonate of ammonia double decomposition is produced heavy alkali, its concrete steps method is at first to prepare saturated brine, remove magnesium salts and calcium salt in the salt solution with lime-soda method, then bicarbonate of ammonia is disperseed, evenly, in the salt solution that the successive adding is 30 ℃-45 ℃, the limit adds the bicarbonate of ammonia limit and stirs, keep 30 ℃-45 ℃, every liter of salt solution adds bicarbonate of ammonia 400 grams-500 grams, adds in 30-60 minute, continue to stir the heavy alkali suspension liquid that can obtain well-crystallized in 5-10 minute, filter out weight alkali, washing immediately and by centrifuge dewatering.Second step was removed ammonia.Concrete grammar is weight alkali to be added to stir in the soda ash solution make yellow soda ash sodium bicarbonate suspension liquid, add yellow soda ash sodium bicarbonate suspension liquid continuously from carbonating tower or sieve-tray tower top, bottom bubbling air or carbon dioxide from tower, ammonia driven away and sodium bicarbonate is regardless of substantially separate, the yellow soda ash and the sodium bicarbonate suspension liquid that remove behind the ammonia are emitted continuously from the tower bottom.The 3rd step filtered out sodium bicarbonate (is 98% sodium bicarbonate if produce content, filter out sodium bicarbonate then can directly carry out following the 6th step dehydration and the 7th step drying).The 4th step was carried out the washing first time to sodium bicarbonate, and purpose is to remove yellow soda ash, sodium-chlor, bicarbonate of ammonia, ammonium chloride impurity.Concrete grammar is that the reagent hydrochloric acid solution with the 5-12 volumetric molar concentration evenly sprays counterweight alkali and carries out first time and wash in the whizzer of rotating state, washs carbonate content≤0.1% to the sodium bicarbonate.The 5th step counterweight alkali carries out the washing second time.Purpose is to remove sodium-chlor, yellow soda ash, sodium sulfate, SODIUMNITRATE impurity.Concrete grammar is that water even sprinkling in the whizzer of rotating state washed, and washs to sodium-chlor sodium sulfate, SODIUMNITRATE content≤0.1%.The 6th step centrifuge dewatering.Sodium bicarbonate after the 7th step will dewater thorough drying in 50 ℃-100 ℃ air or in the carbon dioxide can obtain the sodium bicarbonate of content at 99%-99.9%.
Embodiment two,
The present embodiment the first step is still the employing solvay soda process, and methods such as connection alkaline process or the metathesis of sodium-chlor bicarbonate of ammonia are produced heavy alkali.Second step is without removing ammonia and filtering the direct counterweight alkali of operation and carry out secondary washing, among washing methods and the embodiment one the 4th, the 5th step is identical, but owing to contain more bicarbonate of ammonia, ammonium chloride impurity in the heavy alkali, so need with washing than any more washings counterweight alkali of consumption among the embodiment 1, could remove sodium-chlor, yellow soda ash, bicarbonate of ammonia, ammonium chloride impurity in the heavy alkali, though do not do so and need build carbonating tower or sieve-tray tower, saved the disposable apparatus investment, but shortcoming is to need to wash with more washings.The 3rd step centrifuge dewatering.Sodium bicarbonate after the 4th step will dewater thorough drying in 50 ℃-100 ℃ air or in the carbon dioxide can obtain the sodium bicarbonate of content at 99%-99.9%.
The present invention produces sodium bicarbonate after drying owing to be to adopt at normal temperatures except that the method for ammonia and washing to remove the impurity that weighs in the alkali, so not only technology is simple, save energy reduces environmental pollution, and production cost is reduced greatly.
Claims (4)
1, a kind of method of utilizing heavy alkali production sodium bicarbonate, it is characterized in that at first will weighing stirring in the alkali adding sodium carbonate solution and make the sodium bicarbonate suspension liquid, bubbling air or carbon dioxide are removed the ammonia impurity that contains in the sodium bicarbonate suspension liquid then, adopt washings to carry out secondary Xian Di after filtering and further remove impurity, drying is produced the sodium bicarbonate that content is 99%-99.9%.
2, the method for the heavy alkali production of utilization according to claim 1 sodium bicarbonate is characterized in that can directly carry out secondary washing with washings counterweight alkali removes impurity, and drying is produced sodium bicarbonate.
3, the heavy alkali of the utilization according to claim 1 method of producing sodium bicarbonate is characterized in that heavy alkali made the sodium bicarbonate suspension liquid and the sodium bicarbonate suspension liquid is removed can directly dewatering behind the ammonia and the dry content of producing is 98% sodium bicarbonate.
4, the method for the heavy alkali production of utilization according to claim 1 and 2 sodium bicarbonate, the washings that adopts when it is characterized in that washing for the first time can be the mixture washings that any or sodium bicarbonate, yellow soda ash, sodium sulfate, sodium-chlor, the SODIUMNITRATE in sulfuric acid, hydrochloric acid or the nitric acid formed, and the washings that adopts when washing for the second time is water or arbon dioxide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109423 CN1061761A (en) | 1990-11-22 | 1990-11-22 | A kind of method of producing sodium bicarbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109423 CN1061761A (en) | 1990-11-22 | 1990-11-22 | A kind of method of producing sodium bicarbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1061761A true CN1061761A (en) | 1992-06-10 |
Family
ID=4881425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90109423 Pending CN1061761A (en) | 1990-11-22 | 1990-11-22 | A kind of method of producing sodium bicarbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061761A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091074C (en) * | 1997-05-08 | 2002-09-18 | 喻中甫 | Sodium bicarbonate preparation by catalytic circulation process and multi-phase reactor thereof |
| CN108439434A (en) * | 2018-03-07 | 2018-08-24 | 武汉德泽环保科技有限公司 | A kind of method and apparatus producing sodium bicarbonate |
| CN108455633A (en) * | 2018-01-13 | 2018-08-28 | 安徽金禾实业股份有限公司 | A kind of the salt extraction recovery method and device of synthesis ammonia desulfurization raffinate |
| CN109761248A (en) * | 2019-03-12 | 2019-05-17 | 谢精忠 | Sodium bicarbonate preparation facilities and preparation method |
| CN111704149A (en) * | 2020-05-27 | 2020-09-25 | 山东海天生物化工有限公司 | Process for producing sodium bicarbonate |
| CN111960441A (en) * | 2020-07-29 | 2020-11-20 | 山东海天生物化工有限公司 | Production process of sodium bicarbonate for desulfurization |
-
1990
- 1990-11-22 CN CN 90109423 patent/CN1061761A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091074C (en) * | 1997-05-08 | 2002-09-18 | 喻中甫 | Sodium bicarbonate preparation by catalytic circulation process and multi-phase reactor thereof |
| CN108455633A (en) * | 2018-01-13 | 2018-08-28 | 安徽金禾实业股份有限公司 | A kind of the salt extraction recovery method and device of synthesis ammonia desulfurization raffinate |
| CN108439434A (en) * | 2018-03-07 | 2018-08-24 | 武汉德泽环保科技有限公司 | A kind of method and apparatus producing sodium bicarbonate |
| CN109761248A (en) * | 2019-03-12 | 2019-05-17 | 谢精忠 | Sodium bicarbonate preparation facilities and preparation method |
| CN109761248B (en) * | 2019-03-12 | 2021-02-26 | 谢精忠 | Baking soda preparation device and preparation method |
| CN111704149A (en) * | 2020-05-27 | 2020-09-25 | 山东海天生物化工有限公司 | Process for producing sodium bicarbonate |
| CN111960441A (en) * | 2020-07-29 | 2020-11-20 | 山东海天生物化工有限公司 | Production process of sodium bicarbonate for desulfurization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1122638C (en) | Comprehensive utilization method of waste ammonia sode liquid and sodium sulfate containing waste liquid | |
| CN101445254A (en) | Method for producing 4A molecular sieve | |
| CN112225235A (en) | Method for preparing sodium bicarbonate and sodium bisulfate from sodium sulfate | |
| CN107162034B (en) | A kind of system and technique preparing nano-calcium carbonate and amino compound fertilizer using the coal chemical industry three wastes | |
| CN114436297B (en) | Method for preparing sodium carbonate from mirabilite | |
| CN1061761A (en) | A kind of method of producing sodium bicarbonate | |
| CN111170341A (en) | Method for coproducing feed-grade and food-grade baking soda by heavy alkali wet decomposition method | |
| CN213446254U (en) | System for calcium sulfate is prepared and hydrochloric acid is retrieved to calcium chloride | |
| CN108796612A (en) | A kind of method of ardealite Cycle-decomposition Sulphuric acid calcium pyroborate coproduction of ammonia sulfate | |
| CN1047573C (en) | Telchnological process of sodium method producing bleaching powder extract | |
| CN109734106B (en) | Method for preparing high-concentration sodium bisulfite solution by using industrial waste | |
| CN1016865B (en) | Producing method of sodium carbonate | |
| CN216073085U (en) | Household garbage incineration fly ash recycling treatment system | |
| CN109354047A (en) | A method of preparing high-purity magnesium oxide | |
| CN101838005A (en) | Method for producing sodium chloride and carbon powder and co-producing superfine light calcium carbonate and white carbon black | |
| CN1055901C (en) | Combiend production process of potassium carbonate and light magnesium carbonate | |
| CN114455612A (en) | Novel process for preparing soda ash byproduct gypsum by using sodium sulfate and carbon dioxide as raw materials | |
| CN1014695B (en) | Process for producing safety powder by zinc method and method for recovering sodium sulfite and common salt from waste liguor | |
| CN1104608A (en) | Production of strontium carbonate | |
| US20220324718A1 (en) | Method for preparing basic copper carbonate | |
| CN218434925U (en) | System for utilize high concentration sulfur dioxide tail gas production sodium metabisulfite | |
| CN1160254C (en) | Solid-state production process | |
| CN220004052U (en) | Sodium hydroxide and flue gas CO 2 System for producing sodium carbonate or baking soda by direct carbonization method | |
| CN1275858C (en) | Method and apparatus for directly preparing K2SO4 after low concentration SO2 smoke gas absorbing oxidation | |
| CN113087104B (en) | System and method for preparing elemental sulfur through liquid-phase catalytic disproportionation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination |