CN1736869A - Production of high concentration composite fertilizer from heavy soda and diamide - Google Patents
Production of high concentration composite fertilizer from heavy soda and diamide Download PDFInfo
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- CN1736869A CN1736869A CN 200410040444 CN200410040444A CN1736869A CN 1736869 A CN1736869 A CN 1736869A CN 200410040444 CN200410040444 CN 200410040444 CN 200410040444 A CN200410040444 A CN 200410040444A CN 1736869 A CN1736869 A CN 1736869A
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Abstract
The method uses nonmetal mineral resource to produce jointly chlorine gas, hydrogen, heavy soda or potash, synthesis ammonia and high concentration composite fertilizer. Wherein, decarbonizing and purifying the lye that has been used to prepare chlorine by electrolyzing sodium chloride or potassium chloride to synthese ammonia raw gas as nitrogen source for the said fertilizers and heavy soda or potash; using oxygen-enriched water vapor to oxygenize the high-concentration sulfuretted hydrogen gas from desulfurized natural gas and obtain sulfuric acid without residue gas; using acid hydrolysis of sulfuric acid to phosphorus ore for phosphoric acid as phosphor source for the said fertilizer; the reaction heat can satisfies the require; the water and gas is circulating. Compared with existing technique, this method increases the utility for resource, cuts process and has well social and economic benefits.
Description
Technical field the present invention relates to fully utilize the method for nonmetal mineral resource (hydrogen sulfide that sodium-chlor or Repone K, coal or Sweet natural gas, selexol process obtain, Rock Phosphate (72Min BPL) etc.) combination producing chlorine, hydrogen, soda ash (or potash), synthetic ammonia and high-concentration compound fertilizer.The technical field that relates to has synthetic ammonia, chlor-alkali, sulfuric acid, phosphoric acid and chemical fertilizer.
Existing solvay soda process, the connection alkaline process of producing soda ash of background technology all is based on the ammoniated brine carbonization, and the chlorine in the raw material changes into calcium chloride or ammonium chloride, and its utility value is little even become trade waste.The method that feeds carbonic acid gas in sodium hydroxide solution is also arranged, not industrialization but cost is high.Existing from high-concentration hydrogen sulfide production vitriolic method, industrial subject matter is that the air excess amount increases the weight of the burden of tail gas acid mist processing greatly and causes environmental stress.The method of existing synthetic-ammonia transformation gas decarbonization joint-producing anhydrous sodium carbonate is to carry out in the ammoniated brine system, and gas purification degree is limited by the vapor liquid equilibrium of ammonia-carbonic acid gas-water, and the chlorine in the raw material changes into ammonium chloride and reduced utility value.
Summary of the invention the present invention discloses a kind of method that fully utilizes raw material combination producing chlorine, hydrogen, Soda Ash Danse (or potash), synthetic ammonia and high-concentration compound fertilizers such as high-concentration hydrogen sulfide that sodium-chlor or Repone K, coal or Sweet natural gas, selexol process obtain and Rock Phosphate (72Min BPL).
Mainly invention thought of the present invention is: obtain simple substance chlorine in the time of 1) from sodium-chlor or Repone K system soda ash or potash, avoid degrading or wasting of chlorine resource: 2) produce Soda Ash Danse (or potash) sodium-chlor or Repone K electrolytic solution decarburization purifying gas as raw material for synthesis of ammonia the time, by the integrated economic level that develops skill of technology; 3) use heavy-oxygen-enriched water steam diluting high-concentration hydrogen sulfide direct oxidation system sulfuric acid, steam cycle is used, emission-free discharging.4) to be that tie carries out technology integrated for the chlorine that is in great demand with national economy, Soda Ash Danse (or potash) and high density multi-component composite fertilizer product, by reduce process procedure, avoid repeating processing, cogeneration is used in the reaction heat lump, unit cost reduces greatly.
The technology of the present invention main points are: 1) (or 30～35%KOH) alkali lye list tower decarburization obtains no remaining CO to conversion gas with 35～45%NaOH
2The high quality decarbonization gas, after methanation is refining, carry out the synthetic of ammonia; 2) the control degree of carbonisation makes the composition of liquid phase in the decarbonizing tower not enter the acid salt phase region, carbodiimide solution is drawn circulating and evaporating, concentrated, crystallization, centrifugation goes out monohydrated sodium carbonate (or a water half salt of wormwood) back part mother liquor and returns carbonating tower, and crystallization vacuum-drying dehydration under 130 ℃ of temperature obtains Soda Ash Danse (or salt of wormwood) product.3) empty mix, heat, burn with high concentration hydrogen sulfide gas again behind the oxygen that provides and the round-robin water vapor premix generation sulfurous gas and the by-product high-pressure steam of dividing, cooling is after the wet type contact process is catalytically conveted to sulphur trioxide and is condensed into 93～95% sulfuric acid phosphorus supply acid workshop section, and the gas that do not coagulate about 180～230 ℃ is become the steam of 0.2MPa for recycling dilution oxygen and hydrogen sulfide unstripped gas by the circulation fluid of calcium ions injection attraction, washing, purifying, pressurization flash distillation.4) logistics of above-mentioned synthetic ammonia, chlor-alkali, sulfuric acid, phosphoric acid, composite fertilizer combination producing system and can flow cross-utilization, total system power consumption, hear rate self-sufficiency.
Description of drawings Fig. 1 is the schematic flow sheet of comprehensive utilization salt provided by the invention, Sweet natural gas or mineral raw material combination producing chlorine, hydrogen, Soda Ash Danse (or potash), synthetic ammonia and high-concentration compound fertilizers such as coal, hydrogen sulfide and Rock Phosphate (72Min BPL).Among the figure: 1-electrolysis, carbonization system; The 2-synthesis ammonia system; 3-phosphoric acid by wet process system; The 4-sulfate system; 5-reaction heat reclaims and cogeneration system; 6-composite fertilizer production system.Below in conjunction with embodiment accompanying drawing is further elaborated.
Embodiment is set forth the specific embodiment of the invention below in conjunction with embodiment
Embodiment:, produce 80000 tons of Soda Ash Danses, 50,000 tons of chlorine, 16 * 10 per year based on 60kt/a ion film caustic soda device
6(Nm
3) hydrogen, 30,000 tons of synthetic ammonia, 250,000 tons of sulfuric acid, 80,000 tons of phosphoric acid (100%P
2O
5Meter), the joint production of 150,000 tons of diammonium phosphate.
The unstripped gas that concentration of hydrogen sulfide 40～75%, all the other components are mainly alkane and carbonic acid gas is diluted by the cyclic steam of 2.5～3.0 times of volume ratios in sulfate system 4, the oxygen that is equipped with stoichiometric ratio becomes sulfurous gas for hydrogen sulfide perfect combustion and after the wet method contact catalysis changes into sulphur trioxide, under the temperature about 180～230 ℃, be condensed into 93～95% sulfuric acid and be sent to phosphoric acid by wet process system 3 processing Rock Phosphate (72Min BPL), coagulate gas and sprayed attraction, washing, purifying, pressurization flash distillation by the circulation fluid of calcium ions and become the steam of 0.2MPa for circulation dilution hydrogen sulfide unstripped gas.Reaction heat recovery and cogeneration system 5 are with 5 * 10
4In the kW reaction heat 60% is 3 * 10
4KW changes electric energy, all the other energy consumption demands for heat energy supply total system into.In the time of electrolysis, carbonization system 1 output chlorine, hydrogen production,, the conversion gas of synthesis ammonia system 2 purified be no remaining CO with the decarburization of 40%NaOH electrolytic solution list tower
2The high quality decarbonization gas return synthetic ammonia after methanation is refining.Decarbonizing tower control Na/C mol ratio 〉=2, liquid phase is carried out the monohydrated sodium carbonate crystalline growth and is separated after going out tower, and partly mother liquor returns carbonating tower, and crystal vacuum-drying dehydration back under 130 ℃ of left and right sides temperature obtains the Soda Ash Danse product.The phosphoric acid by wet process that synthetic ammonia that system 2 obtains and system 3 obtain is processed as diammonium phosphate product in system 6.
Claims (3)
1. the method for Soda Ash Danse (or potash) is produced in the decarburization of a syngas for synthetic ammonia caustic soda (or Ke Xingjia) solution, it is characterized in that (or 30～35%KOH) alkali lye list tower decarburization obtains no remaining CO to synthetic-ammonia transformation gas with 35～45%NaOH
2The high quality decarbonization gas.Decarbonizing tower inner control Na/C (or K/C) mol ratio 〉=2, liquid phase are carried out monohydrated sodium carbonate (or a water half salt of wormwood) crystalline growth and are separated after going out tower, and partly mother liquor returns carbonating tower.Crystal vacuum-drying dehydration back under 130 ℃ of left and right sides temperature obtains Soda Ash Danse (or potash) product.
2. sulfuric acid manufacture method that uses water vapor dilution oxygen and high concentration hydrogen sulfide gas directly to burn into sulfurous gas and change into sulphur trioxide through the wet method contact catalysis, it is characterized in that steam diluting reaction gas with 2.5～3.0 times of volume ratios, product gas is condensed into 93～95% sulfuric acid under the temperature about 180～230 ℃, coagulate gas and flashed to the steam of 0.2MPa for circulation diluting reaction gas by the circulation fluid of calcium ions injection attraction, washing, purifying, pressurization.Emission-free discharging.
3. the method and a kind of sulfuric acid manufacture method that uses water vapor dilution oxygen and high concentration hydrogen sulfide gas directly to burn into sulfurous gas and change into sulphur trioxide through the wet method contact catalysis according to claim 2 of Soda Ash Danse (or potash) produced in the decarburization of a kind of syngas for synthetic ammonia caustic soda according to claim 1 (or Ke Xingjia) solution, it is characterized in that the output with alkali is configurations sulfuric acid, phosphoric acid, synthetic ammonia and features of DAP production scale union total reaction heat, carry out cogeneration, satisfy the power and the heat energy demand of full scale production device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410040444 CN1736869A (en) | 2004-08-16 | 2004-08-16 | Production of high concentration composite fertilizer from heavy soda and diamide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410040444 CN1736869A (en) | 2004-08-16 | 2004-08-16 | Production of high concentration composite fertilizer from heavy soda and diamide |
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| CN1736869A true CN1736869A (en) | 2006-02-22 |
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| CN 200410040444 Pending CN1736869A (en) | 2004-08-16 | 2004-08-16 | Production of high concentration composite fertilizer from heavy soda and diamide |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425535C (en) * | 2006-11-13 | 2008-10-15 | 赵祥海 | Technique of carbonizing gas supply in procedure of producing soda under joint alkaline process |
| CN103547550A (en) * | 2011-04-20 | 2014-01-29 | 苏尔瓦里斯股份有限公司 | Conversion of acid gas to sulphate or phosphate-based fertilizers |
| WO2015006873A1 (en) * | 2013-07-18 | 2015-01-22 | Cansolv Technology Inc. | Processes for producing sulfuric acid from sour tail gas field |
| CN113479913A (en) * | 2021-08-04 | 2021-10-08 | 陕西同泽人居工程科技有限公司 | Method for producing potassium bicarbonate by utilizing synthetic ammonia and ammonium bicarbonate to realize carbon neutralization |
-
2004
- 2004-08-16 CN CN 200410040444 patent/CN1736869A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425535C (en) * | 2006-11-13 | 2008-10-15 | 赵祥海 | Technique of carbonizing gas supply in procedure of producing soda under joint alkaline process |
| CN103547550A (en) * | 2011-04-20 | 2014-01-29 | 苏尔瓦里斯股份有限公司 | Conversion of acid gas to sulphate or phosphate-based fertilizers |
| CN103547550B (en) * | 2011-04-20 | 2016-01-20 | 苏尔瓦里斯股份有限公司 | Sour gas is to the conversion of vitriol base manure material or phosphate base fertilizer |
| WO2015006873A1 (en) * | 2013-07-18 | 2015-01-22 | Cansolv Technology Inc. | Processes for producing sulfuric acid from sour tail gas field |
| US9815693B2 (en) | 2013-07-18 | 2017-11-14 | Shell Oil Company | Processes for producing sulfuric acid from sour tail gas field |
| EA033099B1 (en) * | 2013-07-18 | 2019-08-30 | Кэнсолв Текнолоджи Инк. | Process for producing sulfuric acid from sour tail gas field |
| CN113479913A (en) * | 2021-08-04 | 2021-10-08 | 陕西同泽人居工程科技有限公司 | Method for producing potassium bicarbonate by utilizing synthetic ammonia and ammonium bicarbonate to realize carbon neutralization |
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