The technology of Sodium formate

Today we will introduce the The  technology of Sodium formate.

Introduction: HCOONa(CAS No.141-53-7), slight formic acid odor.Soluble in water and glycerin, slightly soluble in ethanol.Toxic, broken down into hydrogen and sodium oxalate as strong heat. 

Ingredients: coke, caustic soda

Process: the main reactive: 2C + O2  →  2CO CO + NaOH → HCOONa

 

A kind of important industrial production of sodium formate method, is the use of coke as raw material, through gasification dusting, washing, decarburization and dust removal technology, such as obtain the carbon monoxide gas;Carbon monoxide after desulfurization and compression, pass into the reactor of the containing 20% ~ 30% sodium hydroxide solution, under pressure from 160 ~ 200 ℃ and 2 mpa reaction generated sodium formate, will evaporate, separation, drying for a quick solution solid product sodium formate.     

1) gasification: coke with electric hoist up to the upper gasification furnace, from the oven and coke gasification furnace to furnace, coke in the furnace and the air fan in the incomplete combustion produce the mixed gases such as carbon monoxide, carbon dioxide and nitrogen.The main reaction equations: C+O2→CO2+Q  CO2+C→2CO-Q  CO2+C→2CO-Q

 

2) purification: from gasification furnace gas mixture into the whirlwind dust remover to remove mixed gas entrainment after most of the solid particles into the scrubber tower, tower of gas cleaning with water for washing liquid, further to remove solid particles in the mixed gases, again into the caustic scrubber is circulation absorption solution with sodium hydroxide solution, removing the part of the carbon dioxide gas in gas mixture, then through liquid rotary separator gas entrainment of moisture into the electrostatic precipitator was isolated, through electrostatic remove the rest of the solid particles, purifying mixed gas again.Purification steps main reaction equation: CO2+2NaOH→Na2CO3+H2O     CO2+NaOH→NaHCO3

 

3) compression: purify two segments of the mixed gas entering the compressor after compression, pressure to 2.0-2.0 Mpa, the oil-water separator into the mixer, mix with lye from preheater, under a certain temperature and pressure, lye and most of the carbon dioxide gas reaction, basic to remove the carbon dioxide, carbon monoxide gas process required.Compression process of main reaction equation: CO2+2NaOH→Na2CO3+H2O    CO2+NaOH→NaHCO3

 

4) synthesis: a process to carbon monoxide and nitrogen gas heated to 140-150 ℃ in synthesis reactor, carbon monoxide in the synthesis reactor react with sodium hydroxide to produce sodium formate solution, sodium formate solution and nitrogen and traces of carbon monoxide gas mixture into the liquid rotary separator after pressure relief for gas-liquid separation and sodium formate solution pump into the storage tank to be used, mixed gas discharged into the atmosphere.Synthetic processes the main reaction equations: CO+NaOH→HCOONa       CO2+2NaOH→Na2CO3+H2O

 

5) evaporation separation: the sodium formate solution to the storage tank with pump to the evaporator, heat conduction oil heating furnace, oil evaporate most moisture content, form, content, 70-80% sodium formate solution after the pump to the centrifuge, sodium formate by about 5%.     

6) packing: centrifugal after sodium formate solution using hot air to blow hot air dryer and dry, get qualified product, sodium formate for packaging.

Purpose: in the leather craft, chrome tanning camouflage acid;Production of formic acid, oxalic acid and insurance powder;Catalyst and stable synthetic agent;Can also be used for the preparation of reducing agent and disinfectant, etc.

 

Ok.Let’s end here. I will pull out more about chemical raw materials later.Thanks!