Cooling air supply system for fatty acid spray granulation

Abstract

The utility model provides a cooling air supply system for fatty acid spray granulation. The cooling air supply system comprises a spray granulation tower, a tower top fan, a tower bottom fan, an air filter, a cooling air heat exchanger, a refrigerator, a bag-type dust collector, a valve I, a valve II, a valve III and a valve IV, when the environment temperature is high or the freezing point of fatty acid is low, the first valve and the third valve are closed, the second valve and the fourth valve are opened, the refrigerator is started to cool the heat exchanger, and internal circulation of cooling air is achieved; when the ambient air temperature is low, closing the valve II and the valve IV, opening the valve I and the valve III, closing the refrigerator and opening the bag-type dust collector, blowing natural air through a fan at the bottom of the tower to cool and granulate vaporific liquid drops in the tower, feeding the vaporific liquid drops into the bag-type dust collector, and emptying the vaporific liquid drops; fatty acid spray granulation at different freezing points is achieved, natural cold air reduces power consumption, low-temperature cooling air enables particles to be more uniform, product quality is improved, condensation of materials on the tower wall is reduced, production continuity is guaranteed, and labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of fatty acid spray granulation systems, and in particular to a cooling air supply system for fatty acid spray granulation. Background Technology

[0002] Fatty acids are a class of compounds composed of carbon, hydrogen, and oxygen. Based on carbon chain length, fatty acids can be further classified into short-chain fatty acids, medium-chain fatty acids, and long-chain fatty acids. Based on the saturation or unsaturation of their hydrocarbon chains, fatty acids can be divided into three categories: saturated fatty acids, monounsaturated fatty acids, and polyunsaturated fatty acids. Pure fatty acids are usually colorless, and their relative density is generally less than 1. Currently, fatty acids are mainly produced from natural oils through hydrolysis and distillation, and from the separation and purification of natural animal and vegetable oils and refining byproducts.

[0003] In the process of fatty acid spray granulation, the atomized droplets need to be cooled to solidify into uniformly sized solid particles. If the temperature of the cooling air is too high, the droplets will collide with each other before solidification, condensing into large particles that do not meet product requirements, or condensing on the inner surface of the granulation tower wall, leading to frequent cleaning and affecting production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a cooling air supply system for fatty acid spray granulation.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A cooling air supply system for fatty acid spray granulation includes a spray granulation tower, a tower top fan, a tower bottom fan, an air filter, a cooling air heat exchanger, a chiller, a bag filter, and valves one, two, three, and four.

[0007] The air outlet at the top of the spray granulation tower is connected to the air inlet of the top blower via a pipe, the air outlet of the top blower is connected to the air inlet of valve four via a pipe, and the air outlet of valve four is connected to the air inlet of the tube side of the cooling air heat exchanger via a pipe.

[0008] The air outlet of the tube side of the cooling air heat exchanger is connected to the air inlet of the second valve through a pipe, and the air outlet of the second valve is connected to the air inlet of the bottom fan of the tower through a pipe.

[0009] The refrigerant outlet of the chiller is connected to the inlet of the shell side of the cooling air heat exchanger via a pipe, and the outlet of the shell side of the cooling air heat exchanger is connected to the refrigerant inlet of the chiller via a pipe, so as to form a refrigerant circulation loop.

[0010] The air filter has an inlet for introducing air, and its outlet is connected to the inlet of valve one via a pipe. The outlet of valve one is connected to the inlet of the tower bottom fan via a pipe.

[0011] The outlet of the bottom blower is connected to the bottom inlet of the spray granulation tower via a pipe.

[0012] The air outlet of the tower top fan is connected to the air inlet of the valve three through a pipe, and the air outlet of the valve three is connected to the air inlet of the bag filter through a pipe. The air outlet of the bag filter is used for venting.

[0013] The spray granulation tower's top air outlet, top fan, valve four, cooling air heat exchanger, valve two, bottom fan, and bottom air inlet form a forced cooling air circulation loop. This loop is used to close valve one and valve three and open valve two and valve four when the ambient temperature is high or the freezing point of the fatty acids produced is low. At the same time, the chiller is turned on to cool the cooling air heat exchanger, thus achieving internal circulation of the cooling air.

[0014] The air filter, valve one, bottom fan, bottom air inlet of the spray granulation tower, top air outlet of the spray granulation tower, top fan, valve three, and bag filter constitute a natural cooling air circulation loop. When the ambient temperature is low, valves two and four are closed, valves one and three are opened, the refrigeration unit is turned off, the bag filter is turned on, and natural air is blown to the spray granulation tower by the bottom fan.

[0015] Preferably, both the top tower fan and the bottom tower fan are centrifugal blowers.

[0016] Preferably, the cooling air heat exchanger is a shell-and-tube heat exchanger.

[0017] Preferably, the refrigeration unit is a water-cooled refrigeration unit.

[0018] Preferably, valve one, valve two, valve three and valve four are all electric butterfly valves.

[0019] This application has achieved the following beneficial technical effects:

[0020] In this application, when the ambient temperature is high (greater than 30°C) or the freezing point of the fatty acids produced is low, valves one and three are closed, valves two and four are opened, and the refrigeration unit is turned on to cool the heat exchanger. The cooling air can be internally circulated to ensure normal production in summer.

[0021] When the ambient temperature is low, close valves two and four, open valves one and three, turn off the chiller, turn on the bag filter, and blow natural air through the bottom fan to cool and granulate the mist droplets in the spray granulation tower. Then, the air passes through the top fan to the bag filter and is then discharged back into the ambient air, forming a natural cooling air circulation loop.

[0022] This application addresses the temperature requirements of cooling air during the granulation process of fatty acids with different carbon chain lengths. It also ensures normal production when the ambient temperature is high and the produced fatty acids have a low freezing point, while simultaneously meeting the goal of reducing power consumption and saving energy when the ambient temperature is low.

[0023] The cooling air supply system provided in this application enables the spray granulation production of fatty acids with different freezing points. Utilizing natural cooling air reduces electricity consumption, achieving energy conservation. Low-temperature cooling air results in more uniform product particles, improving product quality. It also reduces material condensation on the tower walls, ensuring production continuity, reducing the labor intensity of manual cleaning, and improving production efficiency. Attached Figure Description

[0024] Figure 1 A schematic diagram of a cooling air supply system for fatty acid spray granulation provided as an embodiment of this utility model;

[0025] In the diagram: 1. Spray granulation tower, 201. Tower top fan, 202. Tower bottom fan, 3. Air filter, 4. Cooling air heat exchanger, 5. Refrigeration unit, 6. Bag filter.

[0026] Valve 701, Valve 702, Valve 703, Valve 704. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] Reference Figure 1 In the diagram: spray granulation tower 1, tower top fan 201, tower bottom fan 202, air filter 3, cooling air heat exchanger 4, chiller 5, bag filter 6; valve 1 701, valve 2 702, valve 3 703, valve 4 704.

[0030] This application provides a cooling air supply system for fatty acid spray granulation, including a spray granulation tower 1, a tower top fan 201, a tower bottom fan 202, an air filter 3, a cooling air heat exchanger 4, a chiller 5, a bag filter 6, and valves 1-701, 2-702, 3-703, and 4-704.

[0031] The top air outlet of the spray granulation tower 1 is connected to the air inlet of the top fan 201 via a pipe, the air outlet of the top fan 201 is connected to the air inlet of the valve 704 via a pipe, and the air outlet of the valve 704 is connected to the air inlet of the tube side of the cooling air heat exchanger 4 via a pipe.

[0032] The air outlet of the tube side of the cooling air heat exchanger 4 is connected to the air inlet of the valve 2 702 through a pipe, and the air outlet of the valve 2 702 is connected to the air inlet of the tower bottom fan 202 through a pipe.

[0033] The coolant outlet of the chiller 5 is connected to the inlet of the shell side of the cooling air heat exchanger 4 via a pipe, and the outlet of the shell side of the cooling air heat exchanger 4 is connected to the coolant inlet of the chiller 5 via a pipe, so as to form a coolant circulation loop.

[0034] The air inlet of the air filter 3 is used to introduce air, and the air outlet of the air filter 3 is connected to the air inlet of the valve 701 through a pipe. The air outlet of the valve 701 is connected to the air inlet of the tower bottom fan 202 through a pipe.

[0035] The outlet of the bottom blower 202 is connected to the bottom air inlet of the spray granulation tower 1 via a pipe.

[0036] The air outlet of the tower top fan 201 is connected to the air inlet of the valve 703 via a pipe, and the air outlet of the valve 703 is connected to the air inlet of the bag filter 6 via a pipe. The air outlet of the bag filter 6 is used for venting.

[0037] The top air outlet, top fan 201, valve 4 704, cooling air heat exchanger 4, valve 2 702, bottom fan 202, and bottom air inlet of the spray granulation tower 1 constitute a forced cooling air circulation loop. This loop is used to close valve 1 701 and valve 3 703 and open valve 2 702 and valve 4 704 when the ambient temperature is high or the freezing point of the fatty acids produced is low. At the same time, the refrigeration unit 5 is turned on to cool the cooling air heat exchanger 4, thereby realizing the internal circulation of cooling air.

[0038] The air filter 3, valve 1 701, tower bottom fan 202, tower bottom air inlet of the spray granulation tower 1, tower top air outlet of the spray granulation tower 1, tower top fan 201, valve 3 703, and bag filter 6 constitute a natural cooling air circulation loop. When the ambient temperature is low, valve 2 702 and valve 4 704 are closed, and valve 1 701 and valve 3 703 are opened, the refrigeration unit 5 is turned off, the bag filter 6 is turned on, and natural air is blown to the spray granulation tower 1 through the tower bottom fan 202.

[0039] In one embodiment of this application, both the tower top fan 201 and the tower bottom fan 202 are centrifugal blowers.

[0040] In one embodiment of this application, the cooling air heat exchanger 4 is a shell-and-tube heat exchanger.

[0041] In one embodiment of this application, the refrigeration unit 5 is a water-cooled refrigeration unit.

[0042] In one embodiment of this application, valve 1 701, valve 2 702, valve 3 703 and valve 4 704 are all electric butterfly valves.

[0043] In this application, a refrigerator 5 refers to a mechanical device that uses a compressor to change the pressure of a refrigerant to achieve low-temperature refrigeration. Based on differences in structure and working principle, refrigerators 5 can be divided into several different types, such as piston type, screw type, and centrifugal type. A refrigerator 5 consists of five main parts: a compressor, condenser, evaporator, dryer filter, and expansion valve. Water-cooled refrigerators 5 have better cooling performance but require cooling water.

[0044] The methods and apparatus not described in detail in this utility model are all prior art and will not be elaborated further.

[0045] 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 cooling air supply system for fatty acid spray granulation, characterized in that, Includes spray granulation tower, tower top fan, tower bottom fan, air filter, cooling air heat exchanger, refrigerator, bag filter, valve one, valve two, valve three, and valve four; The air outlet at the top of the spray granulation tower is connected to the air inlet of the top blower via a pipe, the air outlet of the top blower is connected to the air inlet of valve four via a pipe, and the air outlet of valve four is connected to the air inlet of the tube side of the cooling air heat exchanger via a pipe. The air outlet of the tube side of the cooling air heat exchanger is connected to the air inlet of the second valve through a pipe, and the air outlet of the second valve is connected to the air inlet of the bottom fan of the tower through a pipe. The refrigerant outlet of the chiller is connected to the inlet of the shell side of the cooling air heat exchanger via a pipe, and the outlet of the shell side of the cooling air heat exchanger is connected to the refrigerant inlet of the chiller via a pipe, so as to form a refrigerant circulation loop. The air filter has an inlet for introducing air, and its outlet is connected to the inlet of valve one via a pipe. The outlet of valve one is connected to the inlet of the tower bottom fan via a pipe. The outlet of the bottom blower is connected to the bottom inlet of the spray granulation tower via a pipe. The air outlet of the tower top fan is connected to the air inlet of the valve three through a pipe, and the air outlet of the valve three is connected to the air inlet of the bag filter through a pipe. The air outlet of the bag filter is used for venting. The spray granulation tower's top air outlet, top fan, valve four, cooling air heat exchanger, valve two, bottom fan, and bottom air inlet form a forced cooling air circulation loop. This loop is used to close valve one and valve three and open valve two and valve four when the ambient temperature is high or the freezing point of the fatty acids produced is low. At the same time, the chiller is turned on to cool the cooling air heat exchanger, thus achieving internal circulation of the cooling air. The air filter, valve one, bottom fan, bottom air inlet of the spray granulation tower, top air outlet of the spray granulation tower, top fan, valve three, and bag filter constitute a natural cooling air circulation loop. When the ambient temperature is low, valves two and four are closed, valves one and three are opened, the refrigeration unit is turned off, the bag filter is turned on, and natural air is blown to the spray granulation tower by the bottom fan.

2. The cooling air supply system for fatty acid spray granulation according to claim 1, characterized in that, Both the top and bottom fans of the tower are centrifugal blowers.

3. The cooling air supply system for fatty acid spray granulation according to claim 1, characterized in that, The cooling air heat exchanger is a shell-and-tube heat exchanger.

4. The cooling air supply system for fatty acid spray granulation according to claim 1, characterized in that, The refrigeration unit is a water-cooled refrigeration unit.

5. The cooling air supply system for fatty acid spray granulation according to claim 1, characterized in that, Valve 1, Valve 2, Valve 3 and Valve 4 are all electric butterfly valves.

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