Small reactoroperating pressure is higher. The pressure inside the tank is chemical reactionproduced or by a temperature increase and the formation of and pressurefluctuations larger, and sometimes unstable, sudden pressure rise is likely toexceed several times the normal pressure. Therefore, most of the reactionkettle belongs to pressure vessel.
Small reactoroperating temperature is higher, usually chemical reaction needs to be in acertain temperature conditions can be carried out, so the reactor both underpressure and temperature. High temperature methods usually have the following:
1、水加温
1, water heating
要求温度不高时可采用，其加热系统有敞开式和密闭式两种豪赢体育登录网址。
When thetemperature is not high enough to be used, the heating system has two kinds ofopen and closed.
When the heatingtemperature is below 100 degrees Celsius, the steam can be heated by anatmospheric pressure, and the saturated steam is used in the range of 100~180,and the high pressure superheated steam can be used when the temperature ishigher.
If processrequirements must be in high temperature operation or want to avoid heatingsystem using high pressure, available in other medium instead of water andsteam, such as mineral oil (275 to 300 DEG C) and diphenyl ether mixture(boiling 258 DEG C), molten salt (140 ~ 540 DEG C), liquid lead (melting point327 DEG C).
The resistance wireis wound on the insulating layer of the reaction vessel, or is arranged on thespecial insulator which is arranged at a certain distance from the reactionvessel, so that a small space gap is formed between the resistance wire and thereaction kettle body.
