What is the main part? Salt electrolysis? Evaporation? Fuck? Liquid chlorine hydrochloric acid

Desalination: Desalination by thermal method, reaction with refined preparations such as caustic soda, soda ash, barium chloride, sodium hypochlorite, flocculation with settling aid such as sodium polyacrylate, and neutralization with hydrochloric acid. Qualified refined brine is prepared through salt dissolution, reaction, clarification, sand filtration and neutralization.

Electrolysis: The refined brine from the molten salt workshop is preheated to 85℃ and then enters the electrolyzer, where it undergoes electrochemical reaction under the action of direct current, producing chlorine (wet) in the anode chamber, hydrogen (wet) and electrolytic alkali liquor (dilute alkali liquor) in the cathode chamber, and dechlorination is carried out in the hydrogen treatment workshop (drying workshop) and evaporation workshop respectively.

Evaporation: the electrolyte from the electrolysis section enters the electrolyte storage tank in the evaporation section, and the electrolyte is preheated by the charging pump through two spiral plate preheaters and then sent to the first-effect evaporator. The steam sent from the thermal power station heats and evaporates the alkali solution in the first-effect evaporator to a certain concentration, then sends it to the third-effect evaporator to concentrate it into about 30% liquid alkali, and then discharges it to the salting-out tank. The clear alkali dripped from the fourth salting-out tank flows into the concentrated alkali cooling tower, and after cooling, it is sent to the alkali distribution tower to prepare qualified finished products.

The secondary steam generated by the evaporation of the first-effect alkali liquor is used as the secondary heating source, and the secondary steam generated by the evaporation of the second-effect alkali liquor is used as the heat source of the three-effect heater. The secondary steam generated by the third effect is precooled by the precooler, condensed by the jet condenser and discharged with the sewage. The primary condensed water is sent to the salt dissolving section for use, and the secondary and tertiary condensed water and part of precooler water are sent to the hot water storage tank for salt washing.

The crystallized salt separated by the second effect is discharged to the salt concentration tank through the hydrocyclone, and the crystallized salt separated by the third effect is discharged to the second effect evaporator through the hydrocyclone, and is discharged by the second effect separator after the crystal grows again. The salt in the salt concentration tank is put into the centrifuge for salt washing operation, and the mother liquor enters the mother liquor pool and is sent back to the weak alkali storage tank, and the alkali brine enters the alkali salt pool and is sent to the salt dissolving section.

Fuck? Chlorine gas: the wet and hot chlorine gas from electrolysis enters the chlorine water washing cooling tower, and the sprayed circulating chlorine water is directly cooled to about 45℃, and then enters the titanium chloride tube cooler, where it is cooled to12 ~15℃ by the 5℃ cooling water flowing out of the tube. After being trapped by water mist, it enters the strengthened plate tower and the packing drying tower, fully contacts with concentrated sulfuric acid for drying, and then is pressurized to 0.6544 by chlorine compressor.

Hydrogen: The hydrogen produced by electrolysis enters the brine preheater to recover part of the heat, then it is washed and cooled to below 40℃, and then it is pressurized to about 0.02MPa by roots blower, and then it is sent to the gas holder, hydrochloric acid and other hydrogen-using processes.

Liquid chlorine: the dry chlorine gas treated by chlorine and hydrogen enters the tube of tubular chlorine condensing tube, and is cooled by -35℃ frozen brine flowing in the tube. Most of the chlorine gas is separated in gas-liquid separation after being condensed. Liquid chlorine flows into the liquid chlorine storage tank, pressurized and sent to packaging, and the uncondensed tail chlorine is sent to the process of synthesizing hydrochloric acid and sodium hypochlorite as raw materials.

The liquid chlorine in the storage tank is sent to the vaporizer under the system pressure, heated with hot water at 60 ~ 80℃ and pressed into the steel cylinder. The residual liquid chlorine in the vaporizer is regularly pressed into the sewage treatment tank to recover chlorine, and then the sewage is discharged into the sewer.

Hydrochloric acid: hydrogen treated by chlorine and hydrogen enters the sleeve of the burner of the synthetic furnace through the flame booster, buffer and orifice flowmeter, and the liquid chlorinated tail gas enters the inner cylinder of the burner of the synthetic furnace through the buffer, flame booster and orifice flowmeter. Chlorine gas and hydrogen gas are combusted in the synthesis furnace to generate hydrogen chloride gas. After being cooled, the hydrogen chloride gas sequentially enters the first falling film absorption tower, the second falling film absorption tower and the tail gas absorption tower, and is absorbed by top-down absorption water to generate hydrochloric acid, which flows into the recovery tank and is pumped.