SEMI-CONTINUOUS DEODORANT WITH STRUCTURED PACKING Russian patent published in 2013 - IPC B01D3/34 B01D3/38 C11B3/14 

FIELD: process engineering.

SUBSTANCE: this invention relates to semi-continuous deodorant for refining of food fats and/or oils. Proposed semi-continuous deodorant comprises at least one desorption section and differs in that said section includes buffer feed tray 1 for collection of fats and/or oils, means 2 for control of fat or oil flows from said tray 1, means 3 for distribution of said flows over structured packing 4 to make said flows get in contact with desorption agent in countercurrent and intake tray 5 for collection of fat and/or oil flows from structured packing 4. Deodorant includes one or more internal channels or one or more external channels, or combination thereof for desorption agent and volatile substances. Note here that said channels can collect desorption agent flows from one or more trays and are communicated with inlet of gas for desorption sections for reuse of desorption agent in countercurrent. Invention covers also the method of refining of fats and/or oils including the stage whereat the flow of fats and/or oils in fed in semi-continuous deodorant. Proposed method incorporates the stages whereat: i) fats and/or oils are collected at aforesaid buffer feed tray 1 in desorption section, ii) means 2 for control of fat or oil flows from said tray 1 controls said flows, iii) said flow is distributed over structured packing (4) for intensification of surface contact with desorption agent in countercurrent conditions, iv) flows of fats and/or oils from structured packing 4 is collected in intake tray 5 before discharge from desorption section for further treatment including contacts with desorption agent to be preferably collected for reuse in desorption section. Besides, it covers the method of intensification of contact between desorption agent and product in above described semi-continuous deodorant. Note that said method comprises the stages whereat the flows of desorption gas or desorption vapor are collected from one or more trays or sections via internal or external channels 9, 10 to direct collected one-shot flows of desorption agent via feed channel 11 in one or more desorption sections to bring said collected one-shot flows of desorption agent in contact with product flow in countercurrent before discharge of used flows of desorption agent for additional treatment. Besides, it covers the application of above described semi-continuous deodorant for refining of food fats and/or oils, for example, palm oil, vegetable oil and peanut oil, particularly, those containing volatile components in notable concentrations such as free fat acids to be desorbed, such as oils to physically refined.

EFFECT: higher efficiency of desorption, decreased consumption of steam, accelerated process.

10 cl, 5 dwg