System for improving vacuum degree of single acid distillation tower

Abstract

The utility model provides a system for improving the vacuum degree of a single acid distillation tower. Comprising a first single acid distillation tower, a second single acid distillation tower, a first acid condenser, a second acid condenser, a third acid condenser, a first acid jet vacuum pump, a second acid jet vacuum pump, a third acid jet vacuum pump, a fourth acid jet vacuum pump, a first acid cold trap, a second acid cold trap, an acid hot well, a glycerin distillation tower, a glycerin condenser, a first oil jet vacuum pump, a second oil jet vacuum pump and a third oil jet vacuum pump. 4, an oil injection vacuum pump and an oil hot well; when vacuum is started, the first single-acid distillation tower and the second single-acid distillation tower are gathered to one pipeline and connected to the glycerin distillation vacuum system, and the vacuum degree of the single-acid distillation system is improved through the glycerin distillation vacuum system; the vacuum degree of the single-acid tower is improved, the purpose of distilling and separating high-boiling-point materials is achieved, the utilization rate of the single-acid tower is improved, the tower kettle temperature of the single-acid tower is reduced after vacuum is improved, damage of high temperature to the single-acid tower is reduced, and the natural gas usage amount of the single-acid tower is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of single acid distillation column systems, and in particular to a system for improving the vacuum degree of a single acid distillation column. Background Technology

[0002] Monoacids are mixtures of unpolymerized fatty acid monomers and small molecules produced by the cracking of oleic acid during the production of dimer acids from vegetable oleic acid. They are white solids at room temperature and possess the general properties of fatty acids. They are mainly used in the manufacture of paints, deinking agents, lubricants, tanning agents, detergents, plasticizers, and daily cosmetics. They can also be used in the production of alkyd resin coatings, isomeric acids, and pharmaceutical intermediates. The vacuum system for monoacid distillation has primary, secondary, and tertiary vacuum capabilities. When processing high-boiling-point fatty acids (such as C16 and above), the temperature of the monoacid distillation column needs to be increased. To avoid equipment damage and energy loss due to excessively high column bottom temperatures, methods to increase the vacuum level of the monoacid distillation column are necessary. Utility Model Content

[0003] The purpose of this invention is to provide a system for improving the vacuum level of a single-acid distillation column.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] A system for improving the vacuum level of a single acid distillation column includes a single acid distillation column 1, a single acid distillation column 2, an acid condenser 1, an acid condenser 2, an acid condenser 3, an acid jet vacuum pump 1, an acid jet vacuum pump 2, an acid jet vacuum pump 3, an acid jet vacuum pump 4, an acid cold trap 1, an acid cold trap 2, an acid hot well, a glycerol distillation column, a glycerol condenser, an oil jet vacuum pump 1, an oil jet vacuum pump 2, an oil jet vacuum pump 3, an oil jet vacuum pump 4, and an oil hot well.

[0006] The top outlet of the single acid distillation column is connected to the top inlet of the acid-cold trap via a pipe, the bottom outlet of the acid-cold trap is connected to the side inlet of the acid-jet vacuum pump via a pipe, and the end outlet of the acid-jet vacuum pump is connected to the top inlet of the acid-condenser via a pipe.

[0007] The top outlet of the single acid distillation column is connected to the top inlet of the acid-2 cold trap via a pipe, the bottom outlet of the acid-2 cold trap is connected to the side inlet of the acid-2 jet vacuum pump via a pipe, and the end outlet of the acid-2 jet vacuum pump is connected to the top inlet of the acid-1 condenser via a pipe.

[0008] The bottom outlet of the acid-1 condenser is connected to the side inlet of the acid-3 jet vacuum pump via a pipe. The end outlet of the acid-3 jet vacuum pump is connected to the top inlet of the acid-2 condenser via a pipe. The bottom outlet of the acid-2 condenser is connected to the side inlet of the acid-4 jet vacuum pump via a pipe. The end outlet of the acid-4 jet vacuum pump is connected to the top inlet of the acid-3 condenser via a pipe.

[0009] The bottom outlets of the acid condenser, acid condenser 2, and acid condenser 3 are all connected to the inlet of the acid heat well via pipelines.

[0010] The top outlet of the glycerol distillation column is connected to the top inlet of the glycerol condenser via a pipe. The outlet of the glycerol condenser is connected to the side inlet of the oil-jet vacuum pump via a pipe. The end outlet of the oil-jet vacuum pump is connected to the side inlet of the oil-jet vacuum pump via a pipe. The end outlet of the oil-jet vacuum pump is connected to the top inlet of the acid-jet condenser via a pipe.

[0011] The bottom outlet of the acid-1 condenser is connected to the side inlet of the oil-3 jet vacuum pump via a pipe. The end outlet of the oil-3 jet vacuum pump is connected to the top inlet of the acid-2 condenser via a pipe. The bottom outlet of the acid-2 condenser is connected to the side inlet of the oil-4 jet vacuum pump via a pipe. The end outlet of the oil-4 jet vacuum pump is connected to the top inlet of the acid-3 condenser via a pipe.

[0012] The bottom outlets of the acid condenser, acid condenser 2, and acid condenser 3 are all connected to the inlet of the oil well via pipelines.

[0013] The lower outlet of the acid-cold trap is also connected to the side inlet of the oil-jet vacuum pump via a three-way valve.

[0014] The lower outlet of the acid-cooled trap is also connected to the side inlet of the oil-jet vacuum pump via a tee and a valve.

[0015] Preferably, the end inlets of the acid-1 jet vacuum pump, acid-2 jet vacuum pump, acid-3 jet vacuum pump, acid-4 jet vacuum pump, oil-1 jet vacuum pump, oil-2 jet vacuum pump, oil-3 jet vacuum pump, and oil-4 jet vacuum pump are all connected to the steam outlet of the medium-pressure steam storage container via pipelines.

[0016] This application has achieved the following beneficial technical effects:

[0017] In order to improve the utilization rate of the single acid tower and reduce the amount of natural gas used, this application connects the first and second single acid distillation towers to a single pipeline when the single acid tower is vacuumed, and connects it to the glycerol distillation vacuum system to improve the vacuum level of the single acid distillation tower.

[0018] This application can more effectively improve the vacuum degree of the single acid tower, achieve the purpose of distillation and separation of high-boiling-point materials, improve the utilization rate of the single acid tower, reduce the bottom temperature of the single acid tower after increasing the vacuum, reduce the damage of high temperature to the single acid tower, and reduce the amount of natural gas used by the single acid tower. Attached Figure Description

[0019] Figure 1 A schematic diagram of a system for improving the vacuum level of a single-acid distillation column, provided as an embodiment of this utility model;

[0020] In the diagram: 101 Single acid distillation tower 1, 102 Single acid distillation tower 2, 103 Acid 1 condenser (steam condenser), 104 Acid 2 condenser (steam condenser), 105 Acid 3 condenser (steam condenser), 106 Acid 1 jet vacuum pump (steam jet vacuum pump), 107 Acid 2 jet vacuum pump (steam jet vacuum pump), 108 Acid 3 jet vacuum pump (steam jet vacuum pump), 109 Acid 4 jet vacuum pump (steam jet vacuum pump), 110 Acid 1 cold trap, 111 Acid 2 cold trap, 112 Acid hot well;

[0021] 201 Glycerin distillation column, 202 Glycerin condenser, 203 Oil jet vacuum pump (water vapor jet vacuum pump), 204 Oil jet vacuum pump (water vapor jet vacuum pump), 205 Oil jet vacuum pump (water vapor jet vacuum pump), 206 Oil jet vacuum pump (water vapor jet vacuum pump), 207 Oil jet condenser (water vapor condenser), 208 Oil jet condenser (water vapor condenser), 209 Oil jet condenser (water vapor condenser), 210 Oil hot well;

[0022] 3. Connect the lower outlet of the acid-cold trap to the side inlet of the oil-jet vacuum pump.

[0023] 4. Connect the lower outlet of the acid-cooled trap to the side inlet of the oil-jet vacuum pump. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "axial", "radial", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Reference Figure 1 In the diagram: 101 for single acid distillation column 1, 102 for single acid distillation column 2, 103 for acid condenser 1, 104 for acid condenser 2, 105 for acid condenser 3, 106 for acid jet vacuum pump 1, 107 for acid jet vacuum pump 2, 108 for acid jet vacuum pump 3, 109 for acid jet vacuum pump 4, 110 for acid cold trap 1, 111 for acid cold trap 2, 112 for acid hot well; 201 for glycerol distillation column 2, 202 for glycerol condenser, 203 for oil jet vacuum pump 1, 204 for oil jet vacuum pump 2, 205 for oil jet vacuum pump 3, 206 for oil jet vacuum pump 4, 207 for oil condenser 1, 208 for oil condenser 2, 209 for oil condenser 3, 210 for oil hot well; 3 connecting the bottom outlet of acid cold trap 110 to the side inlet of oil jet vacuum pump 203; 4 connecting the bottom outlet of acid cold trap 111 to the side inlet of oil jet vacuum pump 203.

[0027] This application provides a system for improving the vacuum level of a single acid distillation column, including a single acid distillation column 101, a single acid distillation column 202, an acid condenser 103, an acid condenser 204, an acid condenser 305, an acid jet vacuum pump 106, an acid jet vacuum pump 207, an acid jet vacuum pump 308, an acid jet vacuum pump 409, an acid cold trap 110, an acid cold trap 201, an acid hot well 112, a glycerol distillation column 201, a glycerol condenser 202, an oil jet vacuum pump 103, an oil jet vacuum pump 204, an oil jet vacuum pump 305, an oil jet vacuum pump 406, and an oil hot well 210.

[0028] The top outlet of the single acid distillation column 101 is connected to the top inlet of the acid-cold trap 110 through a pipe, the bottom outlet of the acid-cold trap 110 is connected to the side inlet of the acid-jet vacuum pump 106 through a pipe, and the end outlet of the acid-jet vacuum pump 106 is connected to the top inlet of the acid-condenser 103 through a pipe.

[0029] The top outlet of the single acid distillation column 102 is connected to the top inlet of the acid second cold trap 111 through a pipe. The bottom outlet of the acid second cold trap 111 is connected to the side inlet of the acid second jet vacuum pump 107 through a pipe. The end outlet of the acid second jet vacuum pump 107 is connected to the top inlet of the acid first condenser 103 through a pipe.

[0030] The bottom outlet of the acid-1 condenser 103 is connected to the side inlet of the acid-3 jet vacuum pump 108 via a pipe. The end outlet of the acid-3 jet vacuum pump 108 is connected to the top inlet of the acid-2 condenser 104 via a pipe. The bottom outlet of the acid-2 condenser 104 is connected to the side inlet of the acid-4 jet vacuum pump 109 via a pipe. The end outlet of the acid-4 jet vacuum pump 109 is connected to the top inlet of the acid-3 condenser 105 via a pipe.

[0031] The bottom outlets of the acid condenser 103, acid condenser 104, and acid condenser 105 are all connected to the inlet of the acid heat well 112 via pipelines.

[0032] The top outlet of the glycerol distillation column 201 is connected to the top inlet of the glycerol condenser 202 via a pipe. The outlet of the glycerol condenser 202 is connected to the side inlet of the oil-injection vacuum pump 203 via a pipe. The end outlet of the oil-injection vacuum pump 203 is connected to the side inlet of the oil-injection vacuum pump 204 via a pipe. The end outlet of the oil-injection vacuum pump 204 is connected to the top inlet of the oil-injection condenser 207 via a pipe.

[0033] The bottom outlet of the first oil condenser 207 is connected to the side inlet of the third oil jet vacuum pump 205 via a pipe. The end outlet of the third oil jet vacuum pump 205 is connected to the top inlet of the second oil condenser 208 via a pipe. The bottom outlet of the second oil condenser 208 is connected to the side inlet of the fourth oil jet vacuum pump 206 via a pipe. The end outlet of the fourth oil jet vacuum pump 206 is connected to the top inlet of the third oil condenser 209 via a pipe.

[0034] The bottom outlets of the oil condenser 207, oil condenser 208, and oil condenser 209 are all connected to the inlet of the oil well 210 via pipelines.

[0035] The lower outlet of the acid-cold trap 110 is also connected to the side inlet of the oil-jet vacuum pump 203 via a three-way valve.

[0036] The lower outlet of the acid-cooled cold trap 111 is also connected to the side inlet of the oil-jet vacuum pump 203 via a tee and a valve.

[0037] In one embodiment of this application, the end inlets of the acid-1 jet vacuum pump 106, acid-2 jet vacuum pump 107, acid-3 jet vacuum pump 108, acid-4 jet vacuum pump 109, oil-1 jet vacuum pump 203, oil-2 jet vacuum pump 204, oil-3 jet vacuum pump 205, and oil-4 jet vacuum pump 206 are all connected to the outlet of the medium-pressure steam storage container via pipelines.

[0038] In this application, a hot well is a water collection well at the bottom of the condenser to collect condensate, commonly known as a "hot water well". It is a vertical cylindrical structure used to collect condensate generated by continuous condensation. It is named a hot well because its shape resembles a water well.

[0039] The methods and apparatus not described in detail in this utility model are all prior art and will not be elaborated further.

[0040] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A system for improving the vacuum level of a single-acid distillation column, characterized in that, This includes a single acid distillation tower, a single acid distillation tower, an acid-1 condenser, an acid-2 condenser, an acid-3 condenser, an acid-1 jet vacuum pump, an acid-2 jet vacuum pump, an acid-3 jet vacuum pump, an acid-4 jet vacuum pump, an acid-1 cold trap, an acid-2 cold trap, an acid hot well, a glycerol distillation tower, a glycerol condenser, an oil-1 jet vacuum pump, an oil-2 jet vacuum pump, an oil-3 jet vacuum pump, an oil-4 jet vacuum pump, and an oil hot well. The top outlet of the single acid distillation column is connected to the top inlet of the acid-cold trap via a pipe, the bottom outlet of the acid-cold trap is connected to the side inlet of the acid-jet vacuum pump via a pipe, and the end outlet of the acid-jet vacuum pump is connected to the top inlet of the acid-condenser via a pipe. The top outlet of the single acid distillation column is connected to the top inlet of the acid-2 cold trap via a pipe, the bottom outlet of the acid-2 cold trap is connected to the side inlet of the acid-2 jet vacuum pump via a pipe, and the end outlet of the acid-2 jet vacuum pump is connected to the top inlet of the acid-1 condenser via a pipe. The bottom outlet of the acid-1 condenser is connected to the side inlet of the acid-3 jet vacuum pump via a pipe. The end outlet of the acid-3 jet vacuum pump is connected to the top inlet of the acid-2 condenser via a pipe. The bottom outlet of the acid-2 condenser is connected to the side inlet of the acid-4 jet vacuum pump via a pipe. The end outlet of the acid-4 jet vacuum pump is connected to the top inlet of the acid-3 condenser via a pipe. The bottom outlets of the acid condenser, acid condenser 2, and acid condenser 3 are all connected to the inlet of the acid heat well via pipelines. The top outlet of the glycerol distillation column is connected to the top inlet of the glycerol condenser via a pipe. The outlet of the glycerol condenser is connected to the side inlet of the oil-jet vacuum pump via a pipe. The end outlet of the oil-jet vacuum pump is connected to the side inlet of the oil-jet vacuum pump via a pipe. The end outlet of the oil-jet vacuum pump is connected to the top inlet of the acid-jet condenser via a pipe. The bottom outlet of the acid-1 condenser is connected to the side inlet of the oil-3 jet vacuum pump via a pipe. The end outlet of the oil-3 jet vacuum pump is connected to the top inlet of the acid-2 condenser via a pipe. The bottom outlet of the acid-2 condenser is connected to the side inlet of the oil-4 jet vacuum pump via a pipe. The end outlet of the oil-4 jet vacuum pump is connected to the top inlet of the acid-3 condenser via a pipe. The bottom outlets of the acid condenser, acid condenser 2, and acid condenser 3 are all connected to the inlet of the oil well via pipelines. The lower outlet of the acid-cold trap is also connected to the side inlet of the oil-jet vacuum pump via a three-way valve. The lower outlet of the acid-cooled trap is also connected to the side inlet of the oil-jet vacuum pump via a tee and a valve.

2. The system for improving the vacuum degree of a single-acid distillation column according to claim 1, characterized in that, The end inlets of the acid-1 jet vacuum pump, acid-2 jet vacuum pump, acid-3 jet vacuum pump, acid-4 jet vacuum pump, oil-1 jet vacuum pump, oil-2 jet vacuum pump, oil-3 jet vacuum pump, and oil-4 jet vacuum pump are all connected to the steam outlet of the medium-pressure steam storage container via pipelines.

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