公开(公告)号：EP0005981B1

公开(公告)日：1982-09-15

申请号：EP79300967.1

申请日：1979-05-29

Applicant: STAUFFER CHEMICAL COMPANY

Inventor： Sih, Ping Heui ,  Cortessis, Peter George ,  Christiansen, David Ernest ,  Cieski, William John

IPC: C01D7/40

CPC classification number: C01D7/00

公开(公告)号：EP0005981A1

公开(公告)日：1979-12-12

申请号：EP79300967.1

申请日：1979-05-29

Applicant: STAUFFER CHEMICAL COMPANY

Inventor： Sih, Ping Heui ,  Cortessis, Peter George ,  Christiansen, David Ernest ,  Cieski, William John

IPC: C01D7/40

CPC classification number: C01D7/00

Abstract: Sodium bicarbonate of controlled crystal size, habit and bulk density is produced by dispersing carbon dioxide into a saturated solution of sodium carbonate and sodium bicarbonate or a slurry of sodium bicarbonate in a saturated solution of sodium carbonate and sodium bicarbonate for reaction therewith. The reaction is carried out generally at a temperature of about 50° to about 120°C in the presence of sufficient Ca ++ ion so that a specified amount of Ca ++ ion is found in the crystallised sodium bicarbonate. A flow sheet for such process is shown in Figure 1 of the drawings.

Abstract translation: 通过将二氧化碳分散在碳酸钠和碳酸氢钠的饱和溶液中或将碳酸氢钠的浆液在碳酸钠和碳酸氢钠的饱和溶液中分散来进行反应，从而产生受控晶体尺寸，习惯和体积密度的碳酸氢钠。 反应通常在约50℃至约120℃的温度下在足够的Ca 2+离子存在下进行，使得在结晶的溶液中发现指定量的Ca 2+离子 碳酸氢钠 用于这种处理的流程图在附图的图1中示出。