Composite ethyl butyrate purifying tower, separating and refining system and separating process thereof
A compound ethyl butyrate, separation and refining system technology, applied in the separation/purification of carboxylic acid compounds, separation methods, distillation separation, etc., can solve the problems of high energy consumption, large water consumption and complicated process for the purification of ethyl butyrate and other problems, to achieve the effect of low equipment investment cost, saving production water and simple process
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Embodiment 1
[0033]Embodiment 1: a kind of compound ethyl butyrate purification tower and separation and refining system, comprise ethanol rectification tower 1 and ethyl butyrate purification tower 2, the tower diameter of ethanol rectification tower 1 and ethyl butyrate purification tower 2 are respectively For f600mm and f1000mm, the ethyl butyrate purification tower 2 is divided into upper, middle and lower three sections, the upper section 2.1, the middle section 2.2, and the lower section 2.3 are separated by horizontal partition plates 10 in the downcomer 2.7; the ethyl butyrate purification tower 1 A total of 55 valve trays are installed, the upper, middle and lower sections are 20, 16 and 19 respectively, and the spacing between the trays is 400mm; the junction of the upper section 2.1 and the middle section 2.2 of the ethyl butyrate purification tower 2, the middle section 2.2 The distance between the trays at the junction with the lower section 2.3 is 800mm. The horizontal divid...
Embodiment 2
[0037] Embodiment 2: Still taking the material mass flow rate, composition and operating pressure in Embodiment 1 as a benchmark, the simulation calculation method is established according to the production results of Embodiment 1, and the equipment parameters and operating parameters are adjusted as follows:
[0038] The total number of theoretical plates of the ethyl butyrate purification tower 1 is 20 (the upper, middle and lower sections are 6, 6 and 8 respectively), and the total number of theoretical plates of the ethanol rectification tower 2 is 14 (the upper and lower sections are respectively 9 and 5 blocks). The flow rate of the water phase absorption liquid returned to the upper section 2.1 of the ethyl butyrate purification tower 2 by the water phase delivery pump is 920 kg / h, and the reflux ratio of the ethanol rectification tower 2 is 3.6.
[0039] The result of the simulation calculation is: the flow rate of the bottom product of the ethyl butyrate purification ...
Embodiment 3
[0040] Embodiment 3: Still taking the material mass flow rate, composition and operating pressure in Embodiment 1 as a benchmark, the simulation calculation method is established according to the production results of Embodiment 1, and the equipment parameters and operating parameters are adjusted as follows:
[0041] The total number of theoretical plates of the ethyl butyrate purification tower 2 is 48 (the upper, middle and lower sections are respectively 15, 15 and 18), and the total number of theoretical plates of the ethanol rectification tower 1 is 36 (the upper and lower sections are respectively 24 and 12 blocks). The flow rate of the water phase absorption liquid returned to the upper section 2.1 of the ethyl butyrate purification tower 2 by the water phase delivery pump is 850 kg / h, and the reflux ratio of the ethanol rectification tower 2 is 3.6.
[0042] The results of the simulation calculation are: the flow rate of the bottom product of the ethyl butyrate purifi...
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