| 摘要 |
An apparatus for producing chlorine by electrolysis of brine has an anode compartment (12) with an anode (14), a cathode compartment (16) with a cathode (17), and an ion permeable membrane (20) separating the two compartments. The anode compartment is supplied with brine from a supply chamber (22) via a pipe (24). There is circulation of brine between the anode compartment (12) and the supply chamber (22) via a return pipe (34) and a pump (28) operated by chlorine gas generated in the anode compartment (12). The pump (28) comprises a cylinder (30) with a capillary tube (32) therein. The chlorine gas pushes a plug of brine up the tube (32) which flows into the cylinder (30) and into the return pipe (34). Make-up water is supplied via a level control valve (60) which maintains the level of brine in the supply chamber (22), the anode compartment (12), the tube (32) and the cylinder (30) at the level indiclted (69). Chlorine gas passes into a collection chamber (39) via a pipe (40). The cathode compartment (16) is supplied separately with water via a further control valve (62) and pipe (46). Sodium hydroxide generated in the cathode compartment (16) is pumped out of the cathode compartment (16) by a pump (50) similar to the anode pump (28) operated by hydrogen that is generated. Water with the sodium hydroxide therein is pumped into the collection chamber (38) and the hydrogen is vented to the atmosphere via an opening (58). |
