Oil refining and decolorizing electricity-saving system

Abstract

The utility model provides a grease refining and decolorizing power-saving system which comprises a first cooler and a second cooler which are connected with a tower water cooling module, a second pneumatic valve of the first cooler and a third pneumatic valve of the second cooler, the steam inlet of the first cooler is provided with the first pneumatic valve, the first pneumatic valve and the second pneumatic valve are controlled to be opened and closed according to the use state of the filter, and when the first cooler is in a closed state, the tower water cooling module can well provide cooling water for the second cooler, so that the utilization rate of the coolers is improved; the energy loss of the circulating water pump is reduced. In addition, a third cooler connected with the ice water cooling module is further arranged and used for conducting supplementary cooling on the hot oil, when the hot oil is completely cooled, the refrigerating machine is closed or the operation frequency of the refrigerating machine is reduced, and therefore the effect of saving energy is achieved.

Description

Technical Field

[0001] This utility model relates to an oil processing system, and more particularly to an oil refining, decolorizing, and energy-saving system. Background Technology

[0002] Filters are key equipment in oil refining processes, removing impurities, pigments, and other harmful substances from oils using physical or chemical methods to improve purity and quality. After prolonged use, the filter pressure can reach approximately 3 bar, requiring steam to purge the filter cake. The exhaust gas from this purging process then passes through a cooler for further cooling. Current technology requires a 24-hour continuous supply of cooling water to the steam cooler, resulting in underutilization of the cooling water even during non-purging periods. Because this cooler consumes a significant portion of the cooling water system, it reduces the cooling capacity of other coolers, necessitating the addition of extra cooling modules. This, in turn, increases the electricity consumption of the chiller, raising production costs. Therefore, current technology suffers from low cooling water utilization, high chiller consumption, and high power consumption, necessitating an optimized solution to save energy and reduce costs. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an energy-saving system for oil refining and decolorizing, characterized in that it includes:

[0004] At least one filter, the filter having a steam inlet and an exhaust gas outlet;

[0005] The first cooler, connected to the exhaust outlet of the filter, is used to cool the steam after the cake is blown.

[0006] The second cooler, connected to the hot oil inlet, is used to cool the refined finished oil.

[0007] The tower water cooling module is connected to the first cooler and the second cooler respectively, and is used to provide the circulating water required for cooling the first cooler and the second cooler;

[0008] The system includes an automatic control system comprising a first pneumatic valve and a second pneumatic valve. The first pneumatic valve is located at the steam inlet, and the second pneumatic valve is connected between the cooling tower outlet and the first cooler. The first and second pneumatic valves are connected to a control center, and the activation of the first and second pneumatic valves is controlled according to the filter's blowing state.

[0009] Furthermore, the blowing frequency is set to 2-6 times / day, each lasting 20 minutes.

[0010] Furthermore, when the filter starts blowing the cake, the first pneumatic valve and the second pneumatic valve are opened simultaneously, and after the blowing is completed, the first pneumatic valve and the second pneumatic valve are closed.

[0011] Furthermore, the tower water cooling module includes a cooling tower, which is connected to a first pneumatic valve and a second pneumatic valve via a circulating water pump.

[0012] Furthermore, it also includes a connected third cooler and an ice water cooling module, wherein the third cooler is connected in series behind the second cooler, and the ice water cooling module is used to provide the ice water required for cooling the third cooler.

[0013] Furthermore, the automatic control system also includes a second temperature control probe and a regulating valve. The second temperature control probe is located at the outlet of the third cooler and is used to detect the temperature of the hot oil after being cooled by the second and third coolers. The regulating valve is located between the chilled water cooling module and the third cooler and is used to control the flow rate and on / off state of the chilled water supplied from the chilled water cooling module to the third cooler.

[0014] Furthermore, when the temperature detected by the first temperature control probe is not greater than the preset temperature, the regulating valve is closed.

[0015] Furthermore, the ice water cooling module includes a chiller and a chilled water tank connected in sequence.

[0016] Furthermore, the hot oil outlet of the second cooler is equipped with a first temperature control probe for detecting the temperature of the hot oil after it has been processed by the second cooler.

[0017] This invention provides an energy-saving system for oil refining and decolorizing, comprising a first cooler and a second cooler connected to a tower water cooling module. The first cooler cools the blown cake steam, and the second cooler cools the hot oil. The first cooler has a second pneumatic valve, and the steam inlet of the first cooler is equipped with a first pneumatic valve. The opening and closing of the first and second pneumatic valves are controlled according to the filter's operating status. When the first cooler is closed, the tower water cooling module can effectively supply cooling water to the second cooler, thereby improving the cooler's utilization rate and reducing the energy consumption of the circulating water pump. Furthermore, a third cooler connected to an ice water cooling module is used to supplement the cooling of the hot oil. When the control center detects that the second cooler is not fully cooled, it activates the ice water cooling module; when the hot oil is fully cooled, it shuts down the refrigeration unit or reduces its operating frequency, thus saving energy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an energy-saving system for oil refining and decolorizing.

[0019] Attached diagrams and specifications: Filter 1, First cooler 2, Second cooler 3, First pneumatic valve 4, Second pneumatic valve 5, Third cooler 6, Regulating valve 7, First temperature control probe 8, Second temperature control probe 9, Cooling tower 10, Circulating water pump 11, Chiller 12, Chilled water tank 13, Steam inlet 14, Exhaust gas outlet 15, Hot oil inlet 16. Detailed Implementation

[0020] like Figure 1 The illustrated oil refining and decolorizing energy-saving system includes at least one filter 1. The filter 1 is used to remove impurities, pigments and other harmful substances from the oil by physical or chemical methods to improve the purity and quality of the oil. The refined finished oil is discharged through a hot oil inlet 16. The filter 1 is also provided with a steam inlet 14 and a tail gas outlet 15. Steam is introduced into the filter 1 through the steam inlet 14 to blow the filter cake in the filter 1. The steam after blowing the cake is discharged through the tail gas outlet 15.

[0021] The first cooler 2 is connected to the exhaust gas outlet 15 of the filter 1 and is used to cool the steam discharged from the exhaust gas outlet 15; the second cooler 3 is connected to the hot oil inlet 16 and is used to cool the refined finished oil.

[0022] The tower water cooling module is connected to the first cooler 2 and the second cooler 3 respectively, and is used to provide the circulating water required for cooling the first cooler 2 and the second cooler 3.

[0023] The system includes an automatic control system comprising a first pneumatic valve 4 and a second pneumatic valve 5. The first pneumatic valve 4 is located at the steam inlet 14 and is used to control the on / off state of the steam. When the first pneumatic valve 4 is open, steam enters the filter 1 for cake blowing. The second pneumatic valve 5 is connected between the outlet of the cooling tower 10 and the first cooler 2 and is used to control the inflow of cooling water. The first pneumatic valve 4 and the second pneumatic valve 5 are connected to the control center, which controls the activation of the first pneumatic valve 4 and the second pneumatic valve 5 according to the cake blowing status of the filter 1.

[0024] Specifically, the blowing frequency is set to 2-6 times / day, with each blowing lasting 20 minutes. When filter 1 starts blowing, the first pneumatic valve 4 and the second pneumatic valve 5 are simultaneously opened. Steam enters filter 1 through the first pneumatic valve 4 to blow the cake. The exhaust gas after blowing enters the first cooler 2, while the circulating water from the tower water cooling module enters the first cooler 2 through the second pneumatic valve 5 for liquid cooling heat exchange. The exhaust gas condenses into water in the first cooler 2. After the set blowing time ends, the first pneumatic valve 4 and the second pneumatic valve 5 are closed. Steam no longer enters filter 1, and the tower water cooling module no longer supplies cooling water to the first cooler 2. The cooling capacity of the second cooler 3 increases.

[0025] In this embodiment, the tower water cooling module includes a cooling tower 10. The cooling tower 10 is connected to the first pneumatic valve 4 and the second pneumatic valve 5 through a circulating water pump 11. The circulating water pump 11 draws cooling water from the cooling tower 10 to provide circulating power for the cooling water.

[0026] Furthermore, it also includes a third cooler 6, which is connected in series to the rear of the second cooler 3, to supplement the cooling of the finished oil when the cooling effect of the second cooler 3 is insufficient. It also includes an ice water cooling module, connected to the third cooler 6, for providing the ice water required for cooling the third cooler 6.

[0027] The automatic control system also includes a second temperature control probe 9 and a regulating valve 7. The second temperature control probe 9 is located at the hot oil outlet of the second cooler 3 and is used to detect the temperature of the hot oil after being cooled by the second cooler 3 and the third cooler 6. The regulating valve 7 is located between the ice water cooling module and the third cooler 6 and is used to control the on / off state and flow rate of ice water transmitted from the ice water cooling module to the third cooler 6.

[0028] Specifically, the second temperature control probe 9 and the regulating valve 7 are electrically connected to the control center. The second temperature control probe 9 transmits the temperature of the hot oil through the third cooler 6 to the control center. When the detected value is greater than the preset temperature, it indicates that the second cooler 3 and the third cooler 6 have not sufficiently cooled the hot oil. At this time, the opening of the regulating valve 7 is controlled, and chilled water from the chilled water cooling module flows into the third cooler 6 to supplement the cooling of the hot oil. The higher the detected value, the greater the chilled water flow rate of the third cooler 6. When the detected value is not greater than the preset temperature, the regulating valve 7 is closed, and the chilled water cooling module is stopped, thus saving energy. For example, in this embodiment, the preset temperature is 35°C. When the detected temperature is not greater than 35°C, the hot oil has been sufficiently cooled, and no further addition of chilled water is needed.

[0029] Furthermore, the ice water cooling module includes a chiller 12 and a chilled water tank 13 connected in sequence. The chiller 12 is used to provide a low-temperature environment to ensure the smooth progress of the oil crystallization process. The chilled water tank 13 is used to store the low-temperature chilled water generated by the chiller 12 as a circulating carrier for the chilled water.

[0030] Furthermore, the hot oil outlet of the second cooler 6 is equipped with a second temperature control probe 9, which is used to detect the temperature of the hot oil after it has been treated by the second cooler 3.

[0031] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A power-saving system for oil refining and decolorizing, characterized in that, include: At least one filter (1) having a steam inlet (14) and an exhaust outlet (15); The first cooler (2) is connected to the exhaust outlet (15) of the filter (1) and is used to cool the steam after the cake is blown. The second cooler (3) is connected to the hot oil inlet (16) and is used to cool the refined finished oil. The tower water cooling module is connected to the first cooler (2) and the second cooler (3) respectively, and is used to provide the circulating water required for cooling the first cooler (2) and the second cooler (3); The automatic control system includes a first pneumatic valve (4) and a second pneumatic valve (5). The first pneumatic valve (4) is located at the steam inlet (14), and the second pneumatic valve (5) is connected between the outlet of the cooling tower (10) and the first cooler (2). The first pneumatic valve (4) and the second pneumatic valve (5) are connected to the control center, and the activation of the first pneumatic valve (4) and the second pneumatic valve (5) is controlled according to the blowing state of the filter (1).

2. The oil refining and bleaching system of claim 1, wherein the oil refining and bleaching system is configured to operate in a batch mode. The blowing frequency is set to 2-6 times / day, each time lasting 20 minutes.

3. The oil refining and bleaching system of claim 1, wherein the oil refining and bleaching system is configured to operate at a temperature of about 100°C to about 200°C. When the filter (1) starts blowing the cake, the first pneumatic valve (4) and the second pneumatic valve (5) are opened simultaneously. After the blowing is finished, the first pneumatic valve (4) and the second pneumatic valve (5) are closed.

4. The oil refining and bleaching system of claim 1, wherein the oil refining and bleaching system is configured to operate at a temperature of about 100°C to about 200°C. The tower water cooling module includes a cooling tower (10), which is connected to a first pneumatic valve (4) and a second pneumatic valve (5) via a circulating water pump (11).

5. The oil refining and bleaching system of claim 1, wherein the system further comprises a heat exchanger. It also includes a connected third cooler (6) and an ice water cooling module. The third cooler (6) is connected in series to the rear side of the second cooler (3), and the ice water cooling module is used to provide the ice water required for cooling the third cooler (6).

6. The energy-saving decolorization system for oil refining according to claim 5, characterized in that, The automatic control system also includes a second temperature control probe (9) and a regulating valve (7). The second temperature control probe (9) is located at the outlet of the third cooler (6) and is used to detect the temperature of the hot oil after being cooled by the second cooler (3) and the third cooler (6). The regulating valve (7) is located between the ice water cooling module and the third cooler (6) and is used to control the flow rate and on / off of ice water transmitted from the ice water cooling module to the third cooler (6).

7. The energy-saving system for oil refining and decolorizing as described in claim 6, characterized in that, When the temperature detected by the second temperature control probe (9) is not greater than the preset temperature, the regulating valve (7) is closed.

8. The oil refining and bleaching system of claim 5, wherein the system further comprises a heat exchanger. The ice water cooling module includes a chiller (12) and a chilled water tank (13) connected in sequence.

9. The oil refining and bleaching system of claim 5, wherein the system further comprises a heat exchanger. The hot oil outlet of the second cooler (3) is equipped with a first temperature control probe (8) for detecting the temperature of the hot oil after being processed by the second cooler (3).

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