Process for co-production of sodium carbonate and calcium sulfate from ammonium bicarbonate and glauberite tailings

A glauberite and calcium sulfate technology, applied in the direction of calcium/strontium/barium sulfate, carbonate preparations, etc., can solve the problems of high power consumption, difficult continuous operation, large labor consumption, etc. Reasonable process flow and good environmental benefits

Active Publication Date: 2021-04-30
彭赛军 +5
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Known sodium sulfate production soda ash process has Lu Bulan process and Glauber's salt wet process soda ash and ammonium sulfate, wherein, 1) Lu Bulan process soda ash: Lu Bulan process exists product quality difference, production cost height, artificial consumption is big and production The process is carried out between solid phases, and it is difficult to operate continuously.
2) Soda ash and ammonium sulfate produced by Glauber's salt wet method (cold combined soda method): solid sodium sulfate is used as raw material, the raw material cost is high, the power consumption of frozen crystallized sodium sulfate decahydrate and ammonium bicarbonate is high, and

Method used

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  • Process for co-production of sodium carbonate and calcium sulfate from ammonium bicarbonate and glauberite tailings

Examples

Experimental program
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Effect test

Embodiment 1

[0034]Example 1: 1) Take 158 tons of carbon ammonium (NH4HCO3) 380M in step 7)3Saline halide (NaCl 305g / L, NA2SO45.22g / l and NH4HCO3The et al decreases for the raw material (reaction temperature 30 ° C, reaction time 1.5 hours) to isolate 168 tons of solid sodium hydrogencarbonate (NaHCO3) And 380M3Heavy alkali - NaCl 71g / L, NA2SO4 5.22g / L, NH4CL179G / L and NH4HCO3(NH4)2CO3); 2) 168 tons of sodium bicarbonate (Nahco3) Calcination to obtain 106 tons of pure base (NA2CO3) Products and carbon dioxide (CO2); 3) 380M3Heavy alkali - NaCl 71g / L, NA2SO4 5.22g / L, NH4CL 179g / L and NH4HCO3(NH4)2CO3) Preheating high temperature (temperature 100 ° C) removes ammonium bicarbonate (NH4HCO3), Ammonium carbonate ((NH4)2CO3After getting ammonia (NH3), Carbon dioxide (CO2) And 380M3Detexamine (NaCl 71g / L, NA2SO4 5.22g / L, NH4CL 179g / L); 4) 380M3Detexamine (NaCl 71g / L, NA2SO4 5.22g / L, NH4CL 179g / L) with 37 tons of lime (CA (OH)2), 200 tons of calcium rice nitroids (NA2SO4 30%,...

Embodiment 2

[0035]Example 2: 1) Take 158 tons of carbon ammonium (NH4HCO3) 380M in step 7)3Saline halide (NaCl 305g / L, NA2SO45.22g / l and NH4HCO3The et al decreases for the raw material (reaction temperature 30 ° C, reaction time 1.5 hours) to isolate 168 tons of solid sodium hydrogencarbonate (NaHCO3) And 380M3Heavy alkali - NaCl 71g / L, NA2SO4 5.22g / L, NH4CL179G / L and NH4HCO3(NH4)2CO3); 2) 168 tons of sodium bicarbonate (Nahco3) Calcination to obtain 106 tons of pure base (NA2CO3) Products and carbon dioxide (CO2); 3) 380M3Heavy alkali - NaCl 71g / L, NA2SO4 5.22g / L, NH4CL 179g / L and NH4HCO3(NH4)2CO3) Preheating high temperature (temperature 100 ° C) removes ammonium bicarbonate (NH4HCO3), Ammonium carbonate ((NH4)2CO3After getting ammonia (NH3), Carbon dioxide (CO2) And 380M3Detexamine (NaCl 71g / L, NA2SO4 5.22g / L, NH4CL 179g / L); 4) 380M3Detexamine (NaCl 71g / L, NA2SO4 5.22g / L, NH4CL 179g / L) and 400 tons of calcium rice nitroidation (NA2SO430%, CASO4 30%, Caco3 25%, MGS...

Embodiment 3

[0036]Example 3: 1) Take 158 tons of carbon ammonium (NH4HCO3) 380M in step 7)3Saline halide (NaCl 305g / L, NA2SO45.22g / l and NH4HCO3The et al decreases for the raw material (reaction temperature 30 ° C, reaction time 1.5 hours) to isolate 168 tons of solid sodium hydrogencarbonate (NaHCO3) And 380M3Heavy alkali - NaCl 71g / L, NA2SO4 5.22g / L, NH4CL179G / L and NH4HCO3(NH4)2CO3); 2) 168 tons of sodium bicarbonate (Nahco3) Calcination to obtain 106 tons of pure base (NA2CO3) Products and carbon dioxide (CO2); 3) 380M3Heavy alkali - NaCl 71g / L, NA2SO4 5.22g / L, NH4CL 179g / L and NH4HCO3(NH4)2CO3) Preheating high temperature (temperature 100 ° C) removes ammonium bicarbonate (NH4HCO3), Ammonium carbonate ((NH4)2CO3After getting ammonia (NH3), Carbon dioxide (CO2) And 380M3Detexamine (NaCl 71g / L, NA2SO4 5.22g / L, NH4CL 179g / L); 4) 380M3Detexamine (NaCl 71g / L, NA2SO4 5.22g / L, NH4CL 179g / L) and 400 tons of calcium rice nitroidation (NA2SO430%, CASO4 30%, Caco3 25%, MGS...

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Abstract

The invention provides a process for co-production of sodium carbonate and calcium sulfate from ammonium bicarbonate and glauberite tailings. The process comprises the following steps: 1) taking ammonium bicarbonate and bittern in the step 7) as raw materials, carrying out double decomposition reaction, and separating to obtain solid sodium bicarbonate, a sodium bicarbonate mother liquor and a small amount of sodium sulfate; 2) calcining the solid sodium bicarbonate to obtain a sodium carbonate product and carbon dioxide; 3) preheating the heavy alkali mother liquor to remove ammonium bicarbonate and ammonium carbonate at high temperature to obtain ammonia, carbon dioxide and deamination mother liquor; 4) reacting the deamination mother liquor with lime and glauberite tailings to obtain ammonia, carbon dioxide and ammonium-removed brine; 5) reacting the ammonium-removed brine with lime and sodium carbonate to obtain ammonium-removed refined brine and calcium-magnesium mud; 6) reacting the ammonium-removed refined brine with the carbon dioxide in the step 2), the ammonia and carbon dioxide in the step 3) and the ammonia and carbon dioxide in the step 4) to obtain bittern; and 7) circulating the bittern to the metathesis reaction process in the step 1).

Description

Technical field[0001]The present invention belongs to the field of inorganic chemical technology, particularly a carbonium and calcium maidenidine nitrate tailings, pure base, calcium sulfate process.Background technique[0002]Knifting sodium sulfate production has a pure alkali process with Pinland method and mamidites, ammonium sulfate, among them, 1) Poklanca-based spermatochi: Poor in Liblanfa, high quality, high production cost, large labor consumption and production The process is carried out between the solid phase, is difficult to continue. 2) Mangzite and moisture-made sodiomethosis and ammonium sulfate (cold alkaline method): There is a raw material using sodium sulfate, high raw material cost, sodium carbonate and ammonium bicarbonate can consume high, and ammonium sulfate The heat can consume a high disadvantage.[0003]In addition, known calcium maidenidikin is a raw material to produce sodium sulfate process, 1 ton of sodium sulfate, sodium sulfate, and a large amount of ...

Claims

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Application Information

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IPC IPC(8): C01D7/02C01F11/46
CPCC01D7/02C01F11/46
Inventor 彭赛军段小伦潘诚良潘成全王宁彭志成
Owner 彭赛军
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