Process method and equipment for quickly refining animal fat

Abstract

The invention relates to the technical field of animal fat refining, in particular to a quick animal fat refining process method which comprises the following process steps: step 1, crushing; step 2, preheating; step 3, dehydrating; step 4, storing; step 5, separating; step 6, refining and selling grease; and 7, refining and selling residues. According to the process method disclosed by the invention, the finely crushed raw materials are preliminarily preheated, so that softening and release of grease are promoted, and meanwhile, the subsequent treatment efficiency is effectively improved; the system is used for increasing the heating area of the equipment and the circulation volume of materials, obviously shortening the time of'heating boiling 'and'vacuum dehydration' and improving the production efficiency, and the process equipment is additionally provided with the heat exchanger, the plate frame type vacuum condensation system and necessary accessory equipment to ensure that the materials in the evaporation tank can be continuously and uniformly heated, so that the production efficiency is improved. Therefore, the evaporation process is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of animal fat refining, and in particular to a method and equipment for rapidly refining animal fat. Background Art

[0002] Animal fats are extracted from the tissues (including offal) of livestock, poultry, and fish. The primary component of animal fats is triglycerides, with small amounts of unsaponifiables and insoluble matter. Their fatty acid composition is primarily saturated, with the exception of fish oil, which contains a high proportion of unsaturated fatty acids. Common animal fats include chicken oil, duck oil, goose oil, and fish oil.

[0003] The current animal fat refining equipment is large in size and occupies a large area, resulting in high construction investment costs, low production efficiency, limited adaptability to raw material types, poor compatibility, and difficulty in meeting the needs of refining different types of animal fats.

[0004] The traditional oil refining process is as follows:

[0005] Raw materials → crushing → heating and boiling → vacuum dehydration → solid-liquid separation → oil → oil refining → filling

[0006] ↘Slag→Feed

[0007] In the traditional oil refining process, the "heating and boiling" and "vacuum dehydration" steps are time-consuming and have low overall production efficiency. It usually takes 3-5 hours to process a batch of raw materials, which greatly increases production costs and time costs.

[0008] Therefore, in view of the problems that the above-mentioned animal fat refining equipment has a large footprint, low production efficiency, poor compatibility, and the traditional refining process is time-consuming and inefficient, a rapid animal fat refining process method and equipment can be designed. Summary of the Invention

[0009] In order to overcome the problems of large footprint, low production efficiency, poor compatibility of animal fat refining equipment, and long time consumption and low efficiency of traditional refining process.

[0010] The technical solution of the present invention is: a method for rapidly refining animal fats, the process steps of which are:

[0011] Step 1: First, the whole pallet of raw materials transported from the cold storage is fed into a dedicated coarse crushing device for coarse crushing to obtain coarsely crushed raw materials. Then, the coarsely crushed raw materials are fed into a dedicated fine crushing device for further fine crushing to obtain finely crushed raw materials.

[0012] Step 2: The finely chopped raw materials are then steadily transported by a screw pump to a pipeline preheater for heating to promote the softening and release of oil;

[0013] Step 3: The preheated material enters the evaporation tank equipped with an external circulation heating system and is dehydrated under a vacuum environment to remove excess moisture in the raw material;

[0014] Step 4: The dehydrated oily residue mixture enters a temporary storage tank for temporary storage;

[0015] Step 5: The mixture is then pumped into a horizontal spiral centrifuge using a dedicated pump. The centrifugal force generated by high-speed rotation accurately separates the oil and solid residue.

[0016] Step 6: The separated oil undergoes flash evaporation to further remove residual moisture and volatile components. It is then sent to oil storage tanks for refining to meet the quality standards required by the market or production. The refined oil can be sold directly or used as raw material in the production of downstream products.

[0017] Step 7: The separated solid residue is transported to the press for further pressing to extract the remaining oil. The dry residue after pressing is packaged and sold as high-quality animal feed. The residual oil will be sent back to the centrifuge for refining, realizing the maximum recovery of resources.

[0018] Preferably, the raw materials in step one include but are not limited to chicken fat raw materials, lard raw materials or beef tallow raw materials.

[0019] Preferably, the stirring rate of the dedicated coarse crushing equipment in step 1 is 50 rpm to 80 rpm, and the stirring rate of the dedicated fine crushing equipment is 1000 rpm to 1600 rpm.

[0020] Preferably, the pipeline preheater in step 2 has wall scraping and straight-through steam heating functions, and the heating temperature of the pipeline preheater should be controlled at 100-120°C.

[0021] Preferably, the temperature of the vacuum dehydration in the evaporation tank in step 3 is controlled to be no higher than 75° C. to avoid damage to heat-sensitive components of the oil.

[0022] Preferably, the water content in the mixture after the dehydration treatment in step 3 should be reduced to below 1%.

[0023] A rapid animal fat refining process equipment is used to implement the above-mentioned rapid animal fat refining process method, which includes a preheater, an evaporator, a heat exchanger, a vacuum pump, a circulating pump, a heater and a temporary storage tank. The steam outlet end of the preheater is connected to the evaporator, the heat exchanger and the vacuum pump in sequence, the outlet end of the evaporator is connected to the circulating pump and the heater in sequence, and the discharge end of the evaporator is connected to the temporary storage tank.

[0024] Preferably, the inlet of the circulation pump is connected to the outlet of the evaporation tank, the outlet of the circulation pump is connected to the inlet of the heater, and the outlet of the heater is connected to the inlet of the evaporation tank, forming an external circulation system.

[0025] Preferably, the inlet of the heat exchanger is connected to the steam outlet of the evaporation tank to receive and condense the steam escaping from the evaporation tank, and the inlet of the vacuum pump is connected to the outlet of the heat exchanger to maintain a negative pressure environment in the heat exchanger and to extract uncondensed steam out of the system.

[0026] Beneficial effects of the present invention:

[0027] 1. This method for rapidly refining animal fats promotes the softening and release of fats by preheating finely crushed raw materials, thereby effectively improving the efficiency of subsequent processing. The preheated materials are then fed into an evaporator equipped with an external circulation heating system. This system increases the heating area of the equipment and the circulation volume of the materials. At the same time, the interior of the evaporator is maintained in a vacuum state, which helps lower the boiling point of water, thereby achieving efficient dehydration at a lower temperature (≤75°C). This significantly shortens the time for "heating and boiling" and "vacuum dehydration," thereby improving production efficiency.

[0028] 2. This animal fat rapid refining process equipment is used to extract bone broth using 4 6m 3 The tank was modified by adding four 4-square-meter heat exchangers, a plate-and-frame vacuum condensation system, and necessary ancillary equipment to the existing tank body, achieving a compact design of the equipment and significantly reducing the floor space. The use of circulating heaters and circulating pumps increased the heating efficiency and circulation speed of the materials, ensuring that the materials in the evaporation tank can be heated continuously and evenly, thereby accelerating the evaporation rate, optimizing the evaporation process, improving the utilization level of raw materials and energy, and improving the economic benefits of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the transformation scheme of the present invention;

[0030] Figure 2 Schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and examples.

[0032] See also Figure 1-Figure 2 The present invention provides an embodiment: a method for rapidly refining animal fats, the process steps of which are as follows:

[0033] Step 1: First, the whole pallet of raw materials transported from the cold storage is fed into a dedicated coarse crushing device for coarse crushing to obtain coarsely crushed raw materials. Then, the coarsely crushed raw materials are fed into a dedicated fine crushing device for further fine crushing to obtain finely crushed raw materials.

[0034] Step 2: The finely chopped raw materials are then steadily transported by a screw pump to a pipeline preheater for heating to promote the softening and release of oil;

[0035] Step 3: The preheated material enters the evaporation tank equipped with an external circulation heating system and is dehydrated under a vacuum environment to remove excess moisture in the raw material;

[0036] Step 4: The dehydrated oily residue mixture enters a temporary storage tank for temporary storage;

[0037] Step 5: The mixture is then pumped into a horizontal spiral centrifuge using a dedicated pump. The centrifugal force generated by high-speed rotation accurately separates the oil and solid residue.

[0038] Step 6: The separated oil undergoes flash evaporation to further remove residual moisture and volatile components. It is then sent to oil storage tanks for refining to meet the quality standards required by the market or production. The refined oil can be sold directly or used as raw material in the production of downstream products.

[0039] Step 7: The separated solid residue is transported to the press for further pressing to extract the remaining oil. The dry residue after pressing is packaged and sold as high-quality animal feed. The residual oil will be sent back to the centrifuge for refining, realizing the maximum recovery of resources.

[0040] Preferably, the raw materials in step one include but are not limited to chicken fat raw materials, lard raw materials or beef tallow raw materials.

[0041] Preferably, the stirring rate of the dedicated coarse crushing equipment in step 1 is 50 rpm to 80 rpm, and the stirring rate of the dedicated fine crushing equipment is 1000 rpm to 1600 rpm.

[0042] Preferably, the pipeline preheater in step 2 has wall scraping and straight-through steam heating functions, and the heating temperature of the pipeline preheater should be controlled at 100-120°C.

[0043] Preferably, the temperature of the vacuum dehydration in the evaporation tank in step 3 is controlled to be no higher than 75° C. to avoid damage to heat-sensitive components of the oil.

[0044] Preferably, the water content in the mixture after the dehydration treatment in step 3 should be reduced to below 1%.

[0045] A rapid animal fat refining process equipment is used to implement the above-mentioned rapid animal fat refining process method, which includes a preheater, an evaporator, a heat exchanger, a vacuum pump, a circulating pump, a heater and a temporary storage tank. The steam outlet end of the preheater is connected to the evaporator, the heat exchanger and the vacuum pump in sequence, the outlet end of the evaporator is connected to the circulating pump and the heater in sequence, and the discharge end of the evaporator is connected to the temporary storage tank.

[0046] Preferably, the inlet of the circulation pump is connected to the outlet of the evaporation tank, the outlet of the circulation pump is connected to the inlet of the heater, and the outlet of the heater is connected to the inlet of the evaporation tank, forming an external circulation system.

[0047] Preferably, the inlet of the heat exchanger is connected to the steam outlet of the evaporation tank to receive and condense the steam escaping from the evaporation tank, and the inlet of the vacuum pump is connected to the outlet of the heat exchanger to maintain a negative pressure environment in the heat exchanger and to extract uncondensed steam out of the system.

[0048] Example 1

[0049] 1. The chicken oil raw materials are coarsely crushed and finely crushed;

[0050] 2. The material is transported to the pipeline preheater by the screw pump and heated to 100-120℃, and then sent to the evaporation tank;

[0051] 3. Use the external circulation heater to quickly dehydrate in the evaporation tank (≤75℃) to below 1%;

[0052] 4. Transport the crude oil to the temporary storage tank;

[0053] 5. Use a pump to transport to a horizontal spiral centrifuge to separate the oil and residue;

[0054] 6. After flash refining, the oil is put into the oil storage tank for sale or directly used in production;

[0055] 7. After the residue is squeezed by the press, the dry residue is transported to the packaging room and packaged into animal feed; the residual oil returns to the centrifuge for refining.

[0056] Example 2

[0057] 1. The lard raw materials are coarsely crushed and finely crushed;

[0058] 2. The material is transported to the pipeline preheater by the screw pump and heated to 100-120℃, and then sent to the evaporation tank;

[0059] 3. Use the external circulation heater to quickly dehydrate in the evaporation tank (≤75℃) to below 1%;

[0060] 4. Transport the crude oil to the temporary storage tank;

[0061] 5. Use a pump to transport to a horizontal spiral centrifuge to separate the oil and residue;

[0062] 6. After flash refining, the oil is put into the oil storage tank for sale or directly used in production;

[0063] 7. After the residue is squeezed by the press, the dry residue is transported to the packaging room and packaged into animal feed; the residual oil returns to the centrifuge for refining.

[0064] Example 3

[0065] 1. The raw butter is coarsely crushed and finely crushed;

[0066] 2. The material is transported to the pipeline preheater by the screw pump and heated to 100-120℃, and then sent to the evaporation tank;

[0067] 3. Use the external circulation heater to quickly dehydrate in the evaporation tank (≤75℃) to below 1%;

[0068] 4. Transport the crude oil to the temporary storage tank;

[0069] 5. Use a pump to transport to a horizontal spiral centrifuge to separate the oil and residue;

[0070] 6. After flash refining, the oil is put into the oil storage tank for sale or directly used in production;

[0071] 7. After the residue is squeezed by the press, the dry residue is transported to the packaging room and packaged into animal feed; the residual oil returns to the centrifuge for refining.

[0072] Through the above steps, compared with traditional refining methods, the raw materials are preliminarily preheated to promote the softening and release of oil, thereby improving the efficiency of subsequent processing. The external circulation heating system then increases the heating area and material circulation volume, and the vacuum evaporator reduces the boiling point of water, thereby achieving efficient dehydration, shortening production time, and improving efficiency. Compared with traditional refining equipment, the addition of a pipeline preheater with scraping wall and straight-through steam heating functions, and the addition of an external circulation heater, a circulation pump, and a vacuum condensation system to the evaporator increase the heating area of the equipment, the circulation volume of the material, and improve production efficiency, thereby solving the problems of large floor space occupation, low production efficiency, poor compatibility, and traditional refining process time consumption and low efficiency of animal fat refining equipment.

[0073] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A method for rapidly refining animal fats, characterized by: The process steps are: Step 1: First, the whole pallet of raw materials transported from the cold storage is fed into a dedicated coarse crushing device for coarse crushing to obtain coarsely crushed raw materials. Then, the coarsely crushed raw materials are fed into a dedicated fine crushing device for further fine crushing to obtain finely crushed raw materials. Step 2: The finely chopped raw materials are then steadily transported by a screw pump to a pipeline preheater for heating to promote the softening and release of oil; Step 3: The preheated material enters the evaporation tank equipped with an external circulation heating system and is dehydrated under a vacuum environment to remove excess moisture in the raw material; Step 4: The dehydrated oily residue mixture enters a temporary storage tank for temporary storage; Step 5: The mixture is then pumped into a horizontal spiral centrifuge using a dedicated pump. The centrifugal force generated by high-speed rotation accurately separates the oil and solid residue. Step 6: The separated oil undergoes flash evaporation to further remove residual moisture and volatile components. It is then sent to oil storage tanks for refining to meet the quality standards required by the market or production. The refined oil can be sold directly or used as raw material in the production of downstream products. Step 7: The separated solid residue is transported to the press for further pressing to extract the remaining oil. The dry residue after pressing is packaged and sold as high-quality animal feed. The residual oil will be sent back to the centrifuge for refining, realizing the maximum recovery of resources.

2. The method for rapid refining of animal fats according to claim 1, characterized in that: The raw materials in step 1 include but are not limited to chicken fat raw materials, lard raw materials or beef tallow raw materials.

3. The method for rapid refining of animal fats according to claim 1, characterized in that: The stirring rate of the dedicated coarse crushing equipment in step 1 is 50 rpm-80 rpm, and the stirring rate of the dedicated fine crushing equipment is 1000 rpm-1600 rpm.

4. The method for rapid refining of animal fats according to claim 1, characterized in that: In step 2, the pipeline preheater has the functions of scraping wall and straight-through steam heating. The heating temperature of the pipeline preheater should be controlled at 100-120°C.

5. The method for rapid refining of animal fats according to claim 1, characterized in that: The temperature of the vacuum dehydration in the evaporation tank in step 3 is controlled to be no more than 75° C. to avoid damage to the heat-sensitive components of the oil.

6. The method for rapid refining of animal fats according to claim 1, characterized in that: The water content of the mixture after the dehydration treatment in step 3 should be reduced to below 1%.

7. A rapid refining process equipment for animal fats, characterized in that A method for rapidly refining animal fats and oils as described in any one of claims 1 to 6 comprises a preheater, an evaporator, a heat exchanger, a vacuum pump, a circulating pump, a heater, and a temporary storage tank, wherein the steam outlet of the preheater is sequentially connected to the evaporator, the heat exchanger, and the vacuum pump, the outlet of the evaporator is sequentially connected to the circulating pump and the heater, and the discharge end of the evaporator is connected to the temporary storage tank.

8. The animal fat rapid refining process equipment according to claim 7, characterized in that: The inlet of the circulation pump is connected to the outlet of the evaporation tank, the outlet of the circulation pump is connected to the inlet of the heater, and the outlet of the heater is connected to the inlet of the evaporation tank, forming an external circulation system.

9. The animal fat rapid refining process equipment according to claim 7, characterized in that: The inlet of the heat exchanger is connected to the steam outlet of the evaporation tank to receive and condense the steam escaping from the evaporation tank. The inlet of the vacuum pump is connected to the outlet of the heat exchanger to maintain the negative pressure environment in the heat exchanger and extract the uncondensed steam out of the system.

Images