Energy-saving equipment for throwing liquid by using centrifugal machine

Abstract

The utility model relates to the technical field of salt manufacturing equipment, in particular to energy-saving equipment for throwing liquid through a centrifugal machine, the energy-saving equipment is applied to a five-effect evaporation system and comprises a controller, a throwing liquid barrel and a condenser, the throwing liquid barrel is arranged at a liquid outlet of the centrifugal machine, and a first conveying pipeline and a second conveying pipeline are arranged on the throwing liquid barrel in a communicating mode; a first mother liquid pump and a second mother liquid pump are arranged in the middle of the first conveying pipeline and the middle of the second conveying pipeline respectively, and the first conveying pipeline is provided with two liquid outlets. According to the embodiment of the invention, two groups of mother liquor pumps and conveying pipelines are arranged, so that when a quadruple-effect evaporator and a quintuple-effect evaporator in the quintuple-effect evaporation system no longer allow the subject to liquid after throwing, the liquid after throwing can be discharged into a refined brine pool after the steam is condensed through the matching of a second mother liquor pump, a second conveying pipeline and a third conveying pipeline; according to the device, the use amount of refined brine is reduced, the waste amount of liquid after throwing is also reduced, meanwhile, the refined brine is preheated, the utilization rate of resources is remarkably improved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of salt-making equipment, and in particular to an energy-saving device utilizing centrifuge waste liquid. Background Art

[0002] There is still a lot of material in the after-spin liquid produced during the centrifuge separation process. Due to the limitations of the five-effect evaporation system design, part of the rich after-spin liquid that does not enter the four-effect evaporator and the five-effect evaporator will be discharged into the wastewater pool, which will significantly reduce the raw material utilization rate and increase production costs. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present application provides an energy-saving device that utilizes the after-spin liquid of a centrifuge. In the embodiment of the present application, two groups of mother liquor pumps and conveying pipelines are set up. When the fourth-effect evaporator and the fifth-effect evaporator in the five-effect evaporation system no longer allow the subject to spin-off liquid, the spin-off liquid can be discharged into the refined brine pool after condensing the steam through the cooperation of mother liquor pump 2, conveying pipeline 2 and conveying pipeline 3, which not only reduces the use of refined brine, but also reduces the waste of spin-off liquid. At the same time, the refined brine can be preheated, which significantly improves the utilization rate of resources and reduces production costs.

[0004] The above application objectives of this application are achieved through the following technical solutions:

[0005] An energy-saving device using centrifuge after-liquid is applied to a five-effect evaporation system, comprising a controller, a after-liquid barrel and a condenser, wherein the after-liquid barrel is arranged at the centrifuge outlet, a delivery pipeline 1 and a delivery pipeline 2 are connected to the after-liquid barrel, a mother liquid pump 1 and a mother liquid pump 2 are respectively arranged in the middle of the delivery pipeline 1 and the delivery pipeline 2, the delivery pipeline 1 has two liquid outlets, and the two liquid outlets of the delivery pipeline 1 extend into a four-effect evaporator and a five-effect evaporator respectively;

[0006] The condenser is installed outside the steam discharge pipe of the five-effect evaporator. A delivery pipe three for discharging cooling water is installed on the condenser. The liquid outlet of delivery pipe two extends into the condenser, and the liquid outlet of delivery pipe three extends into the refined brine pool. An electric control valve is arranged at the liquid outlet of delivery pipe three. The controller is used to control the opening and closing of the electric control valve of the mother liquor pump one, the mother liquor pump two and the liquid outlet of delivery pipe three.

[0007] Optionally, the delivery pipeline three also has a liquid outlet extending into the centrifuge of the five-effect evaporation system, and an electric control valve is arranged at the liquid outlet of the delivery pipeline three extending into the centrifuge, and the controller is connected to the signal of the electric control valve at the liquid outlet of the delivery pipeline three extending into the centrifuge.

[0008] Optionally, the delivery pipeline three also has two liquid outlets respectively extending into the fourth-effect evaporator and the fifth-effect evaporator of the five-effect evaporation system. Electric control valves are arranged at the liquid outlets of the delivery pipeline three extending into the fourth-effect evaporator and the fifth-effect evaporator. The controller is connected to the signals of the two electric control valves at the liquid outlets of the delivery pipeline three extending into the fourth-effect evaporator and the fifth-effect evaporator.

[0009] Optionally, the condenser includes a condensation pipeline 1 and a condensation pipeline 2, the delivery pipeline 2 and the delivery pipeline 3 are connected to the condensation pipeline 1, and the condensation pipeline 2 is externally connected to a cooling medium.

[0010] In summary, this application has the following beneficial technical effects:

[0011] The embodiment of the present application is to set up two groups of mother liquor pumps and conveying pipelines. When the fourth-effect evaporator and the fifth-effect evaporator in the five-effect evaporation system no longer allow the main spin-off liquid, the spin-off liquid can be discharged into the refined brine pool after condensing the steam through the cooperation of mother liquor pump 2, conveying pipeline 2 and conveying pipeline 3, which not only reduces the use of refined brine, but also reduces the waste of spin-off liquid. At the same time, the refined brine can be preheated, which significantly improves the utilization rate of resources and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an implementation method of the present application;

[0013] Figure 2 This is a control schematic diagram of a controller in one embodiment of the present application;

[0014] Figure 3 It is a structural schematic diagram of an implementation method of the present application;

[0015] Figure 4 It is a structural schematic diagram of an implementation method of the present application;

[0016] Figure 5 It is a schematic structural diagram of a condenser according to one embodiment of the present application.

[0017] Figure numerals: 10, controller; 20, post-dumping liquid barrel; 30, condenser; 31, condensation pipeline one; 32, condensation pipeline two; 40, delivery pipeline one; 50, mother liquid pump one; 60, delivery pipeline two; 70, mother liquid pump two; 80, electric control valve; 90, delivery pipeline three. DETAILED DESCRIPTION

[0018] The present application is further described in detail below in conjunction with the accompanying drawings.

[0019] An energy-saving device that uses centrifuge liquid to remove waste liquid, applied to five-effect evaporation system, referring to Figure 1 and Figure 2, including a controller 10, a post-spinning liquid barrel 20 and a condenser 30, the post-spinning liquid barrel 20 is arranged at the liquid outlet of the centrifuge, and the post-spinning liquid barrel 20 is connected with a delivery pipeline 1 40 and a delivery pipeline 2 60 for conveying the post-spinning liquid, and a mother liquid pump 1 50 and a mother liquid pump 2 70 are respectively arranged in the middle of the delivery pipeline 1 40 and the delivery pipeline 2 60, when the mother liquid pump 1 50 and the mother liquid pump 2 70 are started, the post-spinning liquid in the post-spinning liquid barrel 20 will be discharged from the delivery pipeline 1 40 and the delivery pipeline 2 60 to the post-spinning liquid barrel 20, and the delivery pipeline 1 40 has two liquid outlets, and the two liquid outlets of the delivery pipeline 1 40 extend into the four-effect evaporator and the five-effect evaporator in the five-effect evaporation system respectively;

[0020] The condenser 30 is installed on the outside of the steam discharge pipe of the five-effect evaporator, and is used to condense the final steam discharged from the five-effect evaporator. A delivery pipe three 90 for discharging the cooling medium is installed on the condenser 30. The liquid outlet of the delivery pipe two 60 extends into the condenser 30. The liquid after the liquid is extracted by the mother liquid pump two 70 enters the condenser 30 from the delivery pipe two 60 to condense the final steam. After the liquid after the liquid is circulated in the condenser 30, it is discharged through the delivery pipe three 90. The liquid outlet of the delivery pipe three 90 extends into the refined brine pool. Electric control valves 80 are provided at the two liquid outlets of the delivery pipe one 40 and the liquid outlet of the delivery pipe three 90. The controller 10 is used to control the opening and closing of the electric control valve 80 of the liquid outlet of the mother liquid pump one 50, the mother liquid pump two 70, the delivery pipe one 40 and the delivery pipe three 90.

[0021] The following is a further introduction based on specific usage scenarios.

[0022] When in use, the five-effect evaporation system and the centrifuge work normally, and the soluble impurities and a part of the salt in the centrifuge are dissolved by the sprayed water. As the centrifuge works, this part of the water that has dissolved the soluble impurities and salt is thrown out to form a post-throw liquid, and the post-throw liquid is collected in the post-throw liquid barrel 20. When the fourth-effect evaporator and the fifth-effect evaporator of the five-effect evaporation system allow the injection of post-throw liquid, the controller 10 turns on the mother liquid pump 50, and the mother liquid pump 50 extracts the post-throw liquid in the post-throw liquid barrel 20 and discharges the post-throw liquid into the fourth-effect evaporator and the fifth-effect evaporator through the conveying pipe 40 for concentration.

[0023] When the injection of the after-sweep liquid into the fourth-effect evaporator and the fifth-effect evaporator of the five-effect evaporation system is no longer allowed, the controller 10 turns off the mother liquid pump 1 50, opens the mother liquid pump 2 70 and the electric control valve 80 of the liquid outlet of the conveying pipeline 3 90, and the mother liquid pump 2 70 extracts the after-sweep liquid in the after-sweep liquid barrel 20, and sends the after-sweep liquid to the condenser 30 through the conveying pipeline 2 60 to condense the final steam discharged from the five-effect evaporation system. The after-sweep liquid that has undergone heat exchange in the condenser 30 will be discharged into the refined brine pool of the five-effect evaporation system through the conveying pipeline 3 90. In this way, the use of refined brine is reduced, the waste of after-sweep liquid is reduced, and the utilization rate of resources is significantly improved. After the after-sweep liquid that has been heated by heat exchange enters the refined brine pool, the refined brine will be preheated, which further improves the utilization efficiency of resources.

[0024] Of course, when there is too much liquid in the liquid barrel 20 and the fourth-effect evaporator and the fifth-effect evaporator are allowed to inject liquid, the controller 10 can simultaneously open the mother liquid pump 1 50 and the mother liquid pump 2 70 to prevent the liquid level in the liquid barrel 20 from exceeding the allowable value and being discharged into the wastewater system.

[0025] In general, the embodiment of the present application is to set up two groups of mother liquor pumps and delivery pipelines. When the fourth-effect evaporator and the fifth-effect evaporator in the five-effect evaporation system no longer allow the main spin-off liquid, the spin-off liquid can be discharged into the refined brine pool after condensing the steam through the cooperation of the mother liquor pump 2 70, the delivery pipeline 2 60 and the delivery pipeline 3 90, which not only reduces the use of refined brine, but also reduces the waste of spin-off liquid. At the same time, the refined brine can be preheated, which significantly improves the utilization rate of resources and reduces production costs.

[0026] As a feasible specific implementation method of the present application embodiment, refer to Figure 3 The delivery pipeline 3 90 also has a liquid outlet extending into the centrifuge of the five-effect evaporation system. An electric control valve 80 is arranged at the liquid outlet of the delivery pipeline 3 90 extending into the centrifuge. The controller 10 is signal-connected to the electric control valve 80 at the liquid outlet of the delivery pipeline 3 90 extending into the centrifuge.

[0027] In combination with a specific usage scenario, when the injection of post-spin liquid is no longer allowed into the fourth-effect evaporator and the fifth-effect evaporator of the five-effect evaporation system, the controller 10 turns off the mother liquor pump 1 50, opens the mother liquor pump 2 70 and the electric control valve 80 at the outlet of the conveying pipe 3 90, and the mother liquor pump 2 70 extracts the post-spin liquid in the post-spin liquid barrel 20, and sends the post-spin liquid to the condenser 30 through the conveying pipe 2 60 to condense the final steam discharged from the five-effect evaporation system. The post-spin liquid that has undergone heat exchange in the condenser 30 will be discharged into the centrifuge through the conveying pipe 3 90 to continue spraying and flushing the material in the centrifuge, so that the post-spin liquid can be circulated to avoid the post-spin liquid being discharged into the sewage system to cause waste of resources.

[0028] It should be understood that when the liquid level in the post-spinning liquid barrel 20 reaches a specified height, the post-spinning liquid in the post-spinning liquid barrel 20 will generally be discharged into the sewage system. When the mother liquid pump 2 70 is turned on, the post-spinning liquid will pass through the post-spinning liquid barrel 20, the conveying pipe 2 60, the condenser 30, the conveying pipe 3 90, and the centrifuge until it returns to the post-spinning liquid barrel 20, forming a cycle. The operator can reduce the amount of clean water sprayed in the centrifuge. After the amount of external clean water sprayed is reduced, the amount of post-spinning liquid waste can be effectively reduced by relying on the circulating post-spinning liquid.

[0029] When there is too much post-spin liquid in the post-spin liquid barrel 20 and the fourth-effect evaporator and the fifth-effect evaporator are allowed to inject post-spin liquid, the controller 10 can simultaneously open the mother liquid pump 1 50 and the mother liquid pump 2 70 to prevent the liquid level in the post-spin liquid barrel 20 from exceeding the allowable value and being discharged into the wastewater system. Since the post-spin liquid heated by heat exchange in the embodiment of the present application re-enters the centrifuge for spraying and washing materials, the operator can reduce the use of clean water in the centrifuge. Of course, when there is too much post-spin liquid in the post-spin liquid barrel 20 and the fourth-effect evaporator and the fifth-effect evaporator are not allowed to inject post-spin liquid, the controller 10 can also open the mother liquid pump 2 70 and the electric control valve 80 located at the outlet of the centrifuge and the refined brine pool of the conveying pipeline 3 90. While circulating a part of the post-spin liquid, a part of the post-spin liquid is also discharged into the refined brine pool to avoid waste of the post-spin liquid.

[0030] As a feasible specific implementation method of the present application embodiment, refer to Figure 4 The delivery pipeline 3 90 also has two liquid outlets extending into the fourth-effect evaporator and the fifth-effect evaporator of the five-effect evaporation system respectively. The liquid outlets where the delivery pipeline 3 90 extends into the fourth-effect evaporator and the fifth-effect evaporator are both provided with electric control valves 80. The controller 10 is connected to the signals of the two electric control valves 80 at the liquid outlets where the delivery pipeline 3 90 extends into the fourth-effect evaporator and the fifth-effect evaporator. When the signals of the two electric control valves 80 at the liquid outlets where the delivery pipeline 3 90 extends into the fourth-effect evaporator and the fifth-effect evaporator and the mother liquid pump 2 70 are opened, the liquid after heat exchange will enter the fourth-effect evaporator and the fifth-effect evaporator.

[0031] When the liquid level in the post-spinning liquid barrel 20 rises extremely high, the operator can open the mother liquid pump 1 50, the mother liquid pump 2 70 and all the electric control valves 80 on the delivery pipeline 1 40 and the delivery pipeline 3 90 at the same time, so that part of the post-spinning liquid in the post-spinning liquid barrel 20 enters the condensation cycle, part enters the five-effect evaporation system, and part enters the refined brine pool, thereby quickly reducing the dynamic retention amount of the post-spinning liquid in the post-spinning liquid barrel 20 and avoiding the waste caused by discharging the post-spinning liquid into the sewage system. The increased destinations for the post-spinning liquid also mean that the equipment has more margin and can cope with the scenario where a large amount of post-spinning liquid is produced.

[0032] As a feasible specific implementation method of the present application embodiment, refer to Figure 5The condenser 30 includes a condensation pipe 1 31 and a condensation pipe 2 32. The delivery pipe 2 60 and the delivery pipe 3 90 are connected to the condensation pipe 1 31. The condensation pipe 2 32 is connected to an external cooling medium. The condensation pipe 1 31 with the after-spin liquid flowing in the pipe and the condensation pipe 2 32 with the external cooling medium flowing in the pipe jointly condense the final steam of the five-effect evaporation system. When the page in the after-spin liquid barrel 20 is low and the four-effect evaporator and the five-effect evaporator allow the after-spin liquid to enter, there is no need to open the mother liquid pump 2 70. At this time, the final steam can be condensed through the condensation pipe 2 32 connected to the external cooling medium.

[0033] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An energy-saving device using centrifuge liquid, applied to a five-effect evaporation system, characterized in that: The invention comprises a controller (10), a post-spinning liquid barrel (20) and a condenser (30), wherein the post-spinning liquid barrel (20) is arranged at the liquid outlet of the centrifuge, a delivery pipeline (40) and a delivery pipeline (60) are connected and arranged on the post-spinning liquid barrel (20), a mother liquid pump (50) and a mother liquid pump (70) are arranged in the middle of the delivery pipeline (40) and the delivery pipeline (60), respectively, the delivery pipeline (40) has two liquid outlets, and the two liquid outlets of the delivery pipeline (40) extend into a four-effect evaporator and a five-effect evaporator respectively; The condenser (30) is installed outside the steam discharge pipe of the five-effect evaporator. A delivery pipe three for discharging cooling water is installed on the condenser (30). The liquid outlet of the delivery pipe two (60) extends into the condenser (30). The liquid outlet of the delivery pipe three extends into the refined brine pool. An electric control valve (80) is arranged at the liquid outlet of the delivery pipe three. The controller (10) is used to control the opening and closing of the mother liquid pump one (50), the mother liquid pump two (70) and the electric control valve (80) at the liquid outlet of the delivery pipe three.

2. The energy-saving device using centrifuge wastewater according to claim 1, characterized in that: The conveying pipeline three also has a liquid outlet extending into the centrifuge of the five-effect evaporation system. An electric control valve (80) is arranged at the liquid outlet of the conveying pipeline three extending into the centrifuge. The controller (10) is connected to the electric control valve (80) at the liquid outlet of the conveying pipeline three extending into the centrifuge by signal.

3. The energy-saving device using centrifuge waste liquid according to claim 1, characterized in that: The conveying pipeline 3 also has two liquid outlets extending into the fourth-effect evaporator and the fifth-effect evaporator of the five-effect evaporation system respectively. Electric control valves (80) are arranged at the liquid outlets of the conveying pipeline 3 extending into the fourth-effect evaporator and the fifth-effect evaporator. The controller (10) is connected to the two electric control valves (80) at the liquid outlets of the conveying pipeline 3 extending into the fourth-effect evaporator and the fifth-effect evaporator by signals.

4. The energy-saving device using centrifuge waste liquid according to claim 1, characterized in that: The condenser (30) comprises a condensation pipeline 1 (31) and a condensation pipeline 2 (32); a delivery pipeline 2 (60) and a delivery pipeline 3 are connected to the condensation pipeline 1 (31); and the condensation pipeline 2 (32) is externally connected to a cooling medium.

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