Reaction device for refining lard oil by wet process

Abstract

The utility model relates to the field of lard oil refining equipment, in particular to a reaction device for refining lard oil by a wet method. According to the technical scheme, a weighing meter is arranged at the lower end of a pressure meter, a cylindrical pot body is arranged at the lower end of the weighing meter, an oil discharge outlet is formed in the lower end of one side of the cylindrical pot body, a third sight glass is arranged on the cylindrical pot body, a second sight glass is arranged at the lower end of the third sight glass, and a conical lower end socket is arranged at the lower end of a thermometer; a second steam pipe is arranged on the lower conical sealing head, small holes formed in the periphery of the second steam pipe are formed in the second steam pipe, a small oval sealing head is arranged at the lower end of the second steam pipe, and a water and slag discharging opening is formed in the lower end of the small oval sealing head. Vibration generated by an air hammer during steam heating is greatly reduced through the small holes formed in the periphery of the steam pipe, the steam inlet is used for introducing steam into the pot after cooking is finished, the pressure in the pot is maintained to be 0.5-1 bar higher than the pressure in the cooking process, and water, residues, oil and other materials in the pot are discharged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of refining lard equipment, especially to a reaction device for wet refining lard. BACKGROUND

[0002] In the production process of lard production enterprises, after the broken fat is melted and refined, it is common to directly heat and melt in an open or semi-open pot, which causes a large amount of water vapor to be produced during the production process, and it is difficult to control foreign matter. In recent years, a new melting method is to melt and refine in a closed melting furnace or a fat extraction pot.

[0003] The conventional pig fat melting furnace or fat extraction pot has a motor fixedly installed at one end, and the output shaft of the motor is fixedly connected with the stirring shaft in the pot. The rotation of the motor drives the stirring of the stirring shaft to achieve the purpose of uniform heating during the melting process. There is often material residue on the stirring shaft of such equipment, which causes the generation of burnt material after long-time heating, and it is difficult to clean.

[0004] Therefore, in view of the above-mentioned problem of material residue on the stirring shaft of the existing equipment and the difficulty in cleaning, a reaction device for wet refining lard can be designed. By directly introducing steam into the raw fat, the raw fat in the pot is heated and stirred by steam, so that the melting process is uniformly heated, and the generation of material residue and burnt material on the stirring shaft is avoided. After the melting is completed, the residual positive pressure steam in the reaction kettle is collected and used in the raw fat pre-melting pot at the front end, which realizes the recycling of steam and saves energy. Two observation mirrors are designed on the side surface of the vertical fat extraction pot, which facilitates efficient separation of oil, water and residue after the melting is completed, so as to obtain high-quality animal oil product.

[0005] The prior art such as 202122743176.4 a continuous animal oil and fat steam heat transfer refining device uses steam introduced into the rotating shaft to reduce the residual animal oil in the device during the refining process, but it is still essentially a surface heat exchanger, which has poor heat exchange effect. And water as impurity will also enter the animal oil during the refining process.

[0006] The prior art such as 202322928401.0 a reaction device for preparing a plugging remover for oil extraction cuts off the steam injected into the wall interlayer, so that the high-temperature steam can only enter the second branch pipe through the first branch pipe, and then enter the inside of the tank body through the spray head. This can make the wall interlayer and the stirring frame slowly cool down after the steam injection is stopped. When the high-temperature steam entering the tank body contacts the stirring frame and the inner wall of the tank body, it can quickly condense into water, melt and dilute the plugging remover residue. Then, through the rotation of the stirring frame, the plugging remover residue on the stirring frame and the inner wall of the tank body is further removed, further improving the self-cleaning effect of the device.

[0007] Also, steam is introduced into the stirring frame to prevent animal oil residue.

[0008] In addition, in order to facilitate the oil falling, the bottom of the tank is usually set as a conical shape, but it is also easy to cause animal oil residue. Content of the utility model

[0009] In order to overcome the shortcomings of the existing stirring shaft often have material residue, it is difficult to clean, and long time heating leads to the production of burnt material.

[0010] The utility model discloses a reaction device of wet refining lard, including the reaction tank body, the reaction tank body is used for lard production, and the tank body is equipped with the heat preservation shell layer, and the reaction tank body is connected with the steam import, and the steam import is communicated to the inside of the reaction tank body, can make the steam that passes in directly with the lard in the reaction tank body contact;

[0011] The bottom of the reaction tank body is a conical lower end, and the bottom of the conical lower end penetrates a second steam pipe, and a plurality of small holes are formed around the steam pipe in the conical lower end. The steam entering from one end of the second steam pipe can heat the lard on the inner wall of the conical lower end through the small holes around the steam pipe, avoiding the lard from condensing on the inner wall. The excess steam and the lard entering through the small holes around the steam pipe flow out from the other end of the second steam pipe.

[0012] The utility model discloses a technical scheme specifically as follows: a reaction device for wet refining of lard, the main body of the reaction device can be a vertical fat extraction pot, which comprises an oval upper end cover, a feed inlet, a steam inlet, a steam outlet, a CIP cleaning water inlet, a nitrogen pipeline, a waste gas discharge port, a first sight glass, a manhole, a lug, a thermal insulation material, a thermal insulation shell, a thermometer, a conical lower end cover, a second steam pipe, an oval small end cover, a drainage and deslagging port, a small hole around the steam pipe, a second sight glass, a cylindrical pot body, a third sight glass, a weighing table, a pressure gauge and an oil discharge port, the oval upper end cover is provided with the feed inlet, one side of the feed inlet is provided with the steam inlet, one side of the steam inlet is provided with the steam outlet, one side of the steam outlet is provided with the CIP cleaning water inlet, one side of the CIP cleaning water inlet is provided with the nitrogen pipeline, the other side of the feed inlet is provided with the waste gas discharge port, one side of the nitrogen pipeline is provided with the first sight glass, the first sight glass is provided with the manhole, the lower end of the manhole is provided with the lug, one side of the lug is provided with the thermal insulation material at the lower end, the lower end of the thermal insulation material is provided with the thermal insulation shell, the lower end of the thermal insulation shell is provided with the thermometer, the lower end of one side of the oval upper end cover is provided with the pressure gauge, the lower end of the pressure gauge is provided with the weighing table, the lower end of the weighing table is provided with the cylindrical pot body, the lower end of one side of the cylindrical pot body is provided with the oil discharge port, the cylindrical pot body is provided with the third sight glass at the lower end, the lower end of the third sight glass is provided with the second sight glass, the lower end of the thermometer is provided with the conical lower end cover, the conical lower end cover is provided with the second steam pipe, the second steam pipe is provided with the small hole around the steam pipe, the lower end of the second steam pipe is provided with the oval small end cover, and the lower end of the oval small end cover is provided with the drainage and deslagging port.

[0013] Preferably, the steam is used for mixing and stirring the materials, so that the residual materials and burnt materials on the stirring shaft are avoided.

[0014] Preferably, the oval upper end cover is provided with the feed inlet, the steam inlet, the steam outlet, the manhole, the first sight glass and the nitrogen pipeline, the cylindrical pot body is provided with the second sight glass, the third sight glass and the oil discharge port, and the conical lower end cover is provided with the second steam pipe on the left side and the right side, and the oval small end cover is provided with the drainage and deslagging port.

[0015] Preferably, the conical lower end cover is provided with the symmetrical second steam pipes on the left side and the right side, the symmetrical second steam pipes are provided with the small hole around the steam pipe, and the diameter of the small hole is three to five millimeters.

[0016] Preferably, the oval upper end cover is provided with the steam inlet.

[0017] Preferably, the oval upper end cover is provided with the nitrogen pipeline.

[0018] Preferably, the cylindrical pot body is provided with the third sight glass at one half of the height, and the third sight glass is vertically provided with the second sight glass below.

[0019] As preferred, the oil outlet is arranged at 100mm above the second sight glass, and the liquid level of water in the fat extraction kettle needs to be higher than the second sight glass at the end of the refining.

[0020] The utility model discloses the beneficial effect that:

[0021] 1. By setting the small hole of the steam pipe, the vibration caused by air hammer during steam heating is greatly reduced. The steam inlet is used to introduce steam into the kettle after the refining is completed, so that the pressure in the kettle is maintained to be 0.5-1 bar higher than the pressure during the refining process. The water, slag, oil and other materials in the kettle are discharged. After the discharge of the materials is completed, the residual positive pressure steam in the fat extraction kettle is collected and utilized in the raw fat pre-melting kettle at the front end through the steam outlet, so that the steam is recycled. The nitrogen pipeline is used to introduce nitrogen into the kettle after the refining is completed, so that the pressure in the kettle is maintained to be 0.5-1 bar higher than the pressure during the refining process. The water, slag, oil and other materials in the kettle are discharged. The third sight glass is used to observe the material state in the vertical fat extraction kettle, especially for judging the end of the refining. The second sight glass is arranged vertically below the third sight glass, which facilitates the separation operation of the water, oil and slag in the fat extraction kettle. The side oil outlet needs to be located at 100mm above the second sight glass. At the end of the refining, the liquid level of water in the fat extraction kettle needs to be higher than the second sight glass. The pressure vessel has a design pressure of 0.8-1 MPa. It is necessary to have reasonable safety protection. The safety valve, pressure sensor and pressure during the steam inlet are set to be in automatic control mode through the control program, so that the fat extraction kettle can automatically supplement steam and control pressure, thereby avoiding human operation errors.

[0022] 2. By setting the vertical fat extraction kettle, two steam inlets are arranged at the bottom of the kettle. The steam is used for mixing and stirring the materials, so that the material residues and burnt material on the stirring shaft are avoided. At the same time, the steam inlet and steam outlet are arranged at the top of the fat extraction kettle, so that the steam can be recycled and energy is saved. Two observation sight glasses are arranged on the side of the vertical fat extraction kettle, so that the efficient separation of oil, water and slag can be realized after the refining is completed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 The reaction device for wet refining of lard of the utility model is shown in the three-dimensional structure schematic view.

[0024] Fig. 2 The reaction device for wet refining of lard of the utility model is shown in the sight glass schematic view.

[0025] Explanation of reference numerals in the attached diagram: 1. Elliptical upper head; 2. Feed inlet; 3. Steam inlet; 4. Steam outlet; 5. CIP cleaning inlet; 6. Nitrogen pipe; 7. Exhaust gas outlet; 8. Sight glass No. 1; 9. Manhole; 10. Support lug; 11. Insulation material; 12. Insulation shell layer; 13. Thermometer; 14. Conical lower head; 15. Steam pipe No. 2; 16. Elliptical small head; 17. Drainage and slag discharge outlet; 18. Small hole around the steam pipe; 19. Sight glass No. 2; 20. Cylindrical pot body; 21. Sight glass No. 3; 22. Weighing gauge; 23. Pressure gauge; 24. Oil drain outlet. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. The reaction vessel can be a vertical fat-refining pot, and the interior of the reaction vessel is the interior of the vertical fat-refining pot. The interior of the conical lower end cap 14 can be the interior of the conical lower end cap 14 of the vertical fat-refining pot.

[0027] Please see Figs. 1-2This utility model provides an embodiment: a reaction device for wet refining lard, comprising an elliptical upper head 1, a feed inlet 2, a steam inlet 3, a steam outlet 4, a CIP cleaning water inlet 5, a nitrogen pipe 6, a waste gas outlet 7, a sight glass 8, a manhole 9, a support lug 10, insulation material 11, an insulation shell 12, a thermometer 13, a conical lower head 14, a second steam pipe 15, an elliptical small head 16, a drainage and slag discharge outlet 17, small holes around the steam pipe 18, and a second... Sight glass 19, cylindrical pot body 20, sight glass No. 3 21, weighing gauge 22, pressure gauge 23, oil drain port 24, an inlet 2 is provided on the elliptical upper head 1, a steam inlet 3 is provided on one side of the inlet 2, a steam outlet 4 is provided on one side of the steam inlet 3, a CIP cleaning water inlet 5 is provided on one side of the steam outlet 4, a nitrogen pipe 6 is provided on one side of the CIP cleaning water inlet 5, an exhaust gas outlet 7 is provided on the other side of the inlet 2, and a sight glass No. 1 is provided on one side of the nitrogen pipe 6. A manhole 9 is provided on the first sight mirror 8. A lug 10 is located at the lower end of the manhole 9. Insulation material 11 is installed on one side of the lug 10. An insulation shell 12 is installed at the lower end of the insulation material 11. A thermometer 13 is installed at the lower end of the insulation shell 12. A pressure gauge 23 is installed at the lower end of one side of the elliptical upper head 1. A weighing gauge 22 is installed at the lower end of the pressure gauge 23. A cylindrical pot body 20 is installed at the lower end of the weighing gauge 22. One side of the cylindrical pot body 20... The lower end of the cylindrical pot body 20 is provided with an oil drain port 24. A third sight glass 21 is provided on the cylindrical pot body 20. A second sight glass 19 is provided at the lower end of the third sight glass 21. A conical lower head 14 is provided at the lower end of the thermometer 13. A second steam pipe 15 is provided on the conical lower head 14. Small holes 18 are provided around the second steam pipe 15. An elliptical small head 16 is provided at the lower end of the elliptical small head 16. A drain and slag discharge port 17 is provided at the lower end of the elliptical small head 16. An elliptical upper head 1 is provided with a feed inlet 2, a steam inlet 3, a steam outlet 4, a manhole 9, a first sight glass 8, and a nitrogen pipe 6. A second sight glass 19, a third sight glass 21, and an oil drain port 24 are installed on the cylindrical pot body 20. A second steam pipe 15 is provided on each of the left and right sides of the conical lower head 14. A drain and slag discharge port 17 is provided on the elliptical small head 16. Symmetrical second steam pipes 15 are arranged on both sides of the conical lower head 14, with small holes 18 around the symmetrical second steam pipes 15 and the holes having a diameter of three to five millimeters. A steam inlet 3 is provided on the elliptical upper head 1. A nitrogen pipe 6 is provided on the elliptical upper head 1. A third sight glass 21 is provided at half the height of the cylindrical pot body 20, and a second sight glass 19 is provided vertically below the third sight glass 21. The oil drain port 24 is located 100 millimeters above the second sight glass 19. At the end of the boiling process, the water level in the fat extraction pot must be higher than the second sight glass 19.

[0028] During operation, pork fat is preheated into a liquefied and mixed state in the pre-melting pot, and then pumped to the vertical fat extraction pot via a raw material pump. A weight sensor controls the amount pumped each time. When the amount reaches the set value, the pump stops or the feed valves of other fat extraction pots open. After feeding is complete, the feed valves and exhaust pipes are closed, and the fat extraction pot is sealed. The No. 2 steam pipes 15 on the bottom left and right sides are opened to introduce steam into the pot during the refining process, maintaining the pressure and temperature inside the pot, and simultaneously stirring and mixing the materials. The symmetrical steam replenishment pipes and the numerous small holes around the steam pipes greatly reduce the vibration caused by air hammer during steam heating. Using steam to heat and stir the raw fat in the pot ensures uniform heating during the refining process and avoids material residue on the stirring shaft and the formation of scorched substances. As the steam continues to heat the material, the temperature inside the fat extraction pot also rises. When the temperature inside the pot reaches 130-140℃, and the pressure is maintained at 2-3 bar for 2-3 hours, the pork fat inside the pot gradually separates into liquid oil, meat residue, and water. The state of the material inside the extraction pot can be observed through sight glass 21 (No. 3), and the endpoint of the extraction is determined based on the state of the material. After the extraction is completed, the No. 2 steam pipes 15 on the left and right sides at the bottom are closed, and the steam inlet 3 or nitrogen pipe 6 at the top is opened. The pressure inside the pot is maintained at 3-5 bar, and the pot is left to stand for 0.5-2 hours. After the liquid surface separates into three layers of water, oil, and residue, the oil and water discharge operations begin. First, open the bottom drain and slag discharge port 17 to drain some water and oil residue. When the oil-water separation interface drops to a position that can be observed through sight glass 19, close the bottom drain and slag discharge port 17. After the liquid level stabilizes, open the oil discharge port 24 to discharge the oil until the liquid level is flush with the top of sight glass 19. Close the oil discharge port 24 and open the bottom drain and slag discharge port 17 to discharge the remaining water, oil residue, and a small amount of grease. After the boiling is finished, maintain the pressure inside the pot.

[0029] Through the above steps, the vibration caused by air hammer during steam heating is greatly reduced by setting small holes 18 around the steam pipe. Steam inlet 3 is used to introduce steam into the pot after the boiling process, maintaining the pressure inside the pot 0.5-1 bar higher than the pressure during the boiling process, and discharging water, slag, oil and other materials from the pot. After the materials are discharged, the positive pressure steam remaining in the fat-refining pot is collected through steam outlet 4 and used in the front-end raw fat pre-melting pot to realize the recycling of steam. Nitrogen pipe 6 is used to introduce nitrogen into the pot after the boiling process, maintaining the pressure inside the pot 0.5-1 bar higher than the pressure during the boiling process, and discharging water, slag, oil and other materials from the pot. Sight glass 21 is used to observe the state of materials in the vertical fat-refining pot, especially for judging the end of the boiling process. Sight glass 21 is opened vertically below sight glass 21 to facilitate the separation of water, oil and slag in the fat-refining pot. The side drain port 24 must be located 100mm above the second sight glass 19. At the end of the boiling process, the water level in the fat extraction pot must be higher than the second sight glass 19. The pressure vessel is designed to withstand a pressure of 0.8-1MPa. Reasonable safety protection is essential. The safety valve, pressure sensor, and pressure when steam enters are set to automatic control mode through the control program. This allows the fat extraction pot to automatically replenish steam and control the pressure, thereby avoiding human error.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A reaction device for wet-rendering of lard, comprising a reaction tank body for lard production, the tank body being provided with a thermal insulation shell layer, characterized in that: The reaction tank body is connected with a steam inlet (3) which is communicated to the inside of the reaction tank body and can make the steam directly contact with the lard in the reaction tank body; The bottom of the reaction tank body is a conical lower head (14) which is large at the top and small at the bottom, the bottom of the conical lower head (14) is penetrated by a second steam pipe (15), a plurality of small holes (18) are formed around the second steam pipe (15) in the conical lower head (14), the steam enters from one end of the second steam pipe (15) and then passes through the small holes (18) around the second steam pipe (15) to heat the lard on the inner wall of the conical lower head (14), so that the lard is not condensed on the inner wall, and the excess steam and the lard entering through the small holes (18) around the second steam pipe (15) flow out from the other end of the second steam pipe (15).

2. A reaction apparatus for wet-rendering lard according to claim 1, characterized in that: The reaction tank body is connected with a steam outlet (4) which is used for discharging the steam not condensed in the reaction tank body.

3. A reaction apparatus for wet-rendering lard according to claim 1, wherein: The top of the reaction tank body is an elliptical upper head (1), the elliptical upper head (1) is respectively provided with a feeding port (2), a manhole (9), a first sight glass (8) and a nitrogen pipeline (6), the cylindrical pot body (20) is respectively provided with a second sight glass (19), a third sight glass (21) and a lard outlet (24), the left and right sides of the conical lower head (14) are respectively provided with a second steam pipe (15), and the elliptical small head (16) is provided with a water and slag discharge port (17).

4. The reaction apparatus for wet-rendering of lard according to claim 1, wherein: The reaction tank body is a cylindrical pot body (20), and the cylindrical pot body (20) is provided with a third sight glass (21) at one-half height, and the third sight glass (21) is vertically provided with a second sight glass (19) below.

5. A reaction apparatus for wet-rendering lard according to claim 1, wherein: The lard outlet (24) is arranged one hundred millimeters above the second sight glass (19), and the liquid level of the water in the rendering pot needs to be higher than the second sight glass (19) at the end of the rendering.

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