Energy-saving stirring device of biodiesel raw material oil sludge transition tank

Abstract

The utility model discloses an energy-saving stirring device for a biodiesel raw material oil sludge transition tank. The energy-saving stirring device comprises the oil sludge transition tank, a centrifugal machine and a centrifugal pump, the oil sludge transition tank is provided with a steam coil, the top of the tank is provided with a tail gas pipe and an oil sludge feeding pipe, an outlet pipeline at the bottom of the tank is divided into two paths after being connected with a discharging valve, one path is connected with a compressed air inlet pipe with an air inlet valve, the other path is connected with a centrifugal pump after being connected with a pump front valve, and an outlet pipeline of the centrifugal pump is divided into two paths; one path is connected to a centrifugal machine after being connected with a feeding valve, and the other path is connected with a return pipe with a return valve, and the return pipe is connected to the top of the transition tank. The device disclosed by the utility model is low in equipment investment, uniform in stirring and low in energy consumption, and solves the problems of high equipment investment, high maintenance cost and high energy consumption in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of biodiesel production devices, in particular to an energy-saving stirring device for a sludge transition tank of biodiesel raw materials. Background Art

[0002] Biodiesel sludge is mainly composed of four components, namely oil, flocculants, water and slag. Due to the different specific gravities of each component, the sludge will show a stratification phenomenon. Therefore, when centrifugally separating the sludge in actual production, in order to make the centrifuge operate stably and achieve a better centrifugation effect of the sludge, it is necessary to stir the sludge evenly before centrifugation. The existing stirring operation generally installs a stirring paddle in the transition tank and drives the stirring paddle through a motor to stir the sludge evenly. Although such a stirring method can also achieve the effect of uniform stirring, it requires the motor to work continuously, which will consume a large amount of electric energy, and the motor is also prone to wear during long-term operation, increasing the equipment investment and maintenance costs. Summary of the Invention

[0003] The purpose of the utility model is to provide an energy-saving stirring device for a sludge transition tank of biodiesel raw materials with less equipment investment, uniform stirring and low energy consumption, and solve the problems of high equipment investment, high maintenance cost and high energy consumption existing in the prior art.

[0004] To achieve the above purpose, the energy-saving stirring device for a sludge transition tank of biodiesel raw materials of the utility model includes a sludge transition tank 8, a centrifuge 9 and a centrifugal pump 10; the sludge transition tank 8 is provided with a steam coil 11, the top of the tank is provided with a tail gas pipe 12 and a sludge feed pipe 7, the bottom outlet pipe of the tank is divided into two paths after connecting the discharge valve 1, one path is connected to a compressed air inlet pipe 6 with an inlet valve 2, and the other path is connected to the centrifugal pump 10 after connecting the valve before the pump 3. The outlet pipe of the centrifugal pump 10 is divided into two paths, one path is connected to the centrifuge 9 after connecting the feed valve 5, and the other path is connected to a return pipe 13 with a return valve 4, and this return pipe 13 is connected to the top of the transition tank 8.

[0005] The energy-saving stirring device for a sludge transition tank of biodiesel raw materials of the utility model adopts air pressure stirring and has the following technical characteristics and beneficial effects:

[0006] 1. This device is used for stirring the sludge in the sludge transition tank, which not only saves equipment investment and maintenance costs, but also reduces the loss of electric energy and greatly reduces the production cost.

[0007] 2. The sludge in the transition tank is first stirred evenly by air pressure before centrifugation. After starting centrifugation, it realizes cyclic stirring while centrifuging through the return pipe. By combining air pressure stirring and return stirring, the sludge in the transition tank is always kept in a uniform state.

[0008] 3. The whole device has a simple and compact structure, low manufacturing and maintenance costs, and is convenient and efficient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic structural diagram of the energy-saving stirring device for the transitional tank of biodiesel raw material oil sludge of the present utility model.

[0010] Reference numerals: discharge valve 1, intake valve 2, valve before pump 3, return valve 4, feed valve 5, compressed air inlet pipe 6, oil sludge feed pipe 7, oil sludge transitional tank 8, centrifuge 9, centrifugal pump 10, steam coil 11, tail gas pipe 12, return pipe 13. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The following further describes in detail the specific embodiments of the energy-saving stirring device for the transitional tank of biodiesel raw material oil sludge of the present utility model with reference to the drawings.

[0012] Figure 1 As shown, the energy-saving stirring device for the transitional tank of biodiesel raw material oil sludge of the present utility model includes an oil sludge transitional tank 8, a centrifuge 9, and a centrifugal pump 10; the oil sludge transitional tank 8 is provided with a steam coil 11, the top of the tank is provided with a tail gas pipe 12 and an oil sludge feed pipe 7, and the bottom outlet pipe of the tank is divided into two paths after connecting the discharge valve 1. One path is connected to the compressed air inlet pipe 6 with an intake valve 2, and the other path is connected to the centrifugal pump 10 after connecting the valve before pump 3. The outlet pipe of the centrifugal pump 10 is divided into two paths. One path is connected to the centrifuge 9 after connecting the feed valve 5, and the other path is connected to the return pipe 13 with a return valve 4, and this return pipe 13 is connected to the top of the transitional tank 8.

[0013] The operation steps of the energy-saving stirring device for the transitional tank of biodiesel raw material oil sludge of the present utility model during operation are as follows:

[0014] Before the centrifugation of the oil sludge, first start the centrifuge 9 for preheating, and keep the valve before pump 3, the return valve 4, and the feed valve 5 closed; after opening the intake valve 2, then open the discharge valve 1 to allow compressed air to enter the oil sludge transitional tank 8 to perform air pressure stirring on the oil sludge in the tank. After stirring for 10 - 15 minutes, the oil sludge in the transitional tank 8 can be stirred evenly. After stirring evenly, close the intake valve 2, then open the valve before pump 3, the return valve 4, and the feed valve 5. After the centrifuge 9 operates normally, start the centrifugal pump 10. At this time, part of the material oil sludge passes through the centrifugal pump 10 and enters the centrifuge 9 through the feed valve 5 for centrifugation operation, and the other part returns to the oil sludge transitional tank 8 through the return valve 4. The whole centrifugation process is in cyclic stirring, so that the oil sludge in the transitional tank 8 always remains in a uniform state.

[0015] Compared with the existing stirring device driven by a motor to drive the stirring paddle, the stirring device with the above structure not only saves equipment investment and maintenance costs, but also can greatly reduce the power consumption and reduce the production cost.

Claims

1. An energy-saving stirring device for a biodiesel raw material sludge transition tank, characterized by: It comprises an oil sludge transition tank (8), a centrifuge (9) and a centrifugal pump (10); the oil sludge transition tank (8) is provided with a steam coil (11), the top of the tank is provided with an exhaust pipe (12) and an oil sludge feed pipe (7), the bottom outlet pipe of the tank is divided into two paths after being connected to a discharge valve (1), one path is connected to a compressed air intake pipe (6) with an intake valve (2), and the other path is connected to a centrifugal pump (10) after being connected to a pre-pump valve (3), the outlet pipe of the centrifugal pump (10) is divided into two paths, one path is connected to the centrifuge (9) after being connected to a feed valve (5), and the other path is connected to a reflux pipe (13) with a reflux valve (4), and the reflux pipe (13) is connected to the top of the transition tank (8).

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