Separation of Producing 5kt/a DMF Process Design
ABSTRACT
Distillation separation is liquid mixture wide-used unit operation, in chemical, oil refining, petroleum chemical industry etc widely application. In the process of distillation driven by energy meter, contentious, liquid two-phase repeatedly direct contact with and separation, using liquid mixture of different components, volatile degrees by volatile components to gas, liquid phase transfer by volatile components to transfer, realize the disputed liquid gas mixture various components of raw material separation. This process is simultaneously mass transfer heat transfer process.
The sieve is through a board with a tower edgeunder screen hole, updraft via screen hole dispersed, bubbling through liquid layer board, forming a gas-liquid in close contact with the foam layer. Prominent advantages of the tower is sieve simple structure, low cost, manufacturing, maintenance is convenient. Under the same conditions as production ability than float valve tower, tower board efficiency float valve tower near, reasonable design and proper operation can meet the requirements of the sieve tower, and elasticity of operation of high efficiency, using sieve can solve congestion problems, proper control of leakage.
This design task for design must capacity, realize the column DMA - DMF separation. The design of the main content is separation column, including the retention of design process, heat balance material calculation process calculation, calculate, the structure design and check.
Keywords: DMF column separation section Perforated tower