Mixed liquid supply system

Abstract

The utility model provides a mixed liquid supply system which comprises an emulsifying device, a mixing device and a spraying device, a water inlet pipeline of the mixing device is respectively connected with a waste water inlet pipeline and a water outlet pipeline of the emulsifying device, and the mixed liquid supply system further comprises a pump water inlet valve, the spraying device comprises a spraying pump, a nozzle, a pump cleaning pipe, a pump blow-off pipe, a pump cleaning valve and a pump blow-off valve, an input pipe of the spraying pump is connected with a water outlet pipeline of the mixing device, an output pipe of the spraying pump is connected with the nozzle, the nozzle is connected with a flue, the pump cleaning pipe is connected with the output pipe of the spraying pump, and the pump blow-off pipe is connected with the pump cleaning valve. The pump blow-off pipe is connected with an input pipe of the atomizing pump, the pump cleaning valve is arranged on the pump cleaning pipe, the pump blow-off valve is arranged on the pump blow-off pipe, and the pump water inlet valve is arranged on a water outlet pipeline of the mixing device. The spray pump can be prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of supply technology of mixed liquid of high temperature flue gas agglomeration composite agent and desulfurization wastewater in desulfurization wastewater treatment system of coal-fired power plant, and particularly to a mixed liquid supply system. Background Technology

[0002] Currently, the wastewater discharge requirement is no external discharge of wastewater. Specifically, industrial wastewater, after treatment to meet standards, is entirely reused in the plant's production system and not discharged externally. Desulfurization wastewater, a type of end-of-pipe high-salt wastewater with chloride ion levels as high as 31,000 ppm, is a key and challenging aspect of wastewater treatment. Currently, desulfurization wastewater is directly used as makeup water for the wet slag system, which is not conducive to comprehensive utilization. Specifically, after entering the slag water system, the desulfurization wastewater undergoes high-temperature evaporation, causing chloride ions to enter the boiler, affecting pipeline safety. Simultaneously, the slag removal system suffers severe corrosion, seriously threatening its reliability. Therefore, it is necessary to purify the chloride ions in the desulfurization wastewater to reduce its corrosive effect on the boiler.

[0003] The process involves injecting a mixture of atomized agglomerating compound agent and desulfurization wastewater into the high-temperature flue of a coal-fired power plant to purify the chloride ions in the desulfurization wastewater. The basic procedure is to add the agglomerating compound agent to the desulfurization wastewater; the main purpose of the agglomerating compound agent is to reduce the chloride ions in the wastewater. - The diluted agglomerating compound agent solution is atomized and sprayed into the high-temperature flue gas before the air preheater via a spray pump. The atomized solution mixes thoroughly with the hot flue gas, undergoing heat exchange and evaporation. Various ions in the wastewater form various salt solids in the flue gas, which are then removed by a dust collector and collected in dry ash, achieving "zero discharge" of wastewater. Simultaneously, spraying the agglomerating compound agent solution into the high-temperature flue gas before the air preheater significantly removes SO3 from the flue gas, preventing it from reacting with ammonia (NH3) to form NH4HSO4, thus reducing air preheater blockage.

[0004] However, in existing technologies, the atomized high-temperature flue gas injected into the high-temperature flue gas duct before the air preheater is supplied by a mixed liquid supply system. This system first dilutes and emulsifies the agglomerating compound agent, then mixes the diluted and emulsified agglomerating compound agent with desulfurization wastewater, and finally atomizes the mixture and sprays it into the high-temperature flue gas duct before the air preheater. However, in existing technologies, the mixture of agglomerating compound agent and desulfurization wastewater often tends to deposit in the spray pump and corresponding pipelines, leading to blockages in the mixed liquid supply system.

[0005] Therefore, it is necessary to improve the existing liquid mixing supply system to avoid blockage. Utility Model Content

[0006] The purpose of this invention is to provide a liquid mixing supply system to solve the problem of easy clogging in existing liquid mixing supply systems.

[0007] To solve the above-mentioned technical problems, this utility model provides a mixed liquid supply system, including an emulsifying device, a mixing device, and a spraying device. The inlet pipe of the mixing device is connected to both a wastewater inlet pipe and an outlet pipe of the emulsifying device. The system also includes a pump inlet valve. The spraying device includes a spray pump, a nozzle, a pump cleaning pipe, a pump drain pipe, a pump cleaning valve, and a pump drain valve. The input pipe of the spray pump is connected to the outlet pipe of the mixing device, the output pipe of the spray pump is connected to the nozzle, the nozzle is connected to a flue, the pump cleaning pipe is connected to the output pipe of the spray pump, the pump drain pipe is connected to the input pipe of the spray pump, the pump cleaning valve is located on the pump cleaning pipe, the pump drain valve is located on the pump drain pipe, and the pump inlet valve is located on the outlet pipe of the mixing device.

[0008] Optionally, the system also includes a main clean water pipe, and the mixing device further includes a tank cleaning pipe. The inlet end of the main clean water pipe is connected to the inlet end of the tank cleaning pipe, and the outlet end of the tank cleaning pipe is connected to the mixing tank.

[0009] Optionally, the outlet end of the tank cleaning pipe is connected to the top of the mixing tank.

[0010] Optionally, the pump cleaning pipe is connected to the main clean water pipe.

[0011] Optionally, the emulsification device includes a reagent storage tank, an emulsification tank, and an emulsification pump set. The reagent storage tank is connected to the emulsification tank, the input pipe of the emulsification pump set is connected to the output pipe of the emulsification tank, and the output end of the emulsification pump set is connected to the mixing device.

[0012] Optionally, the emulsifying pump assembly includes a shear pump and a delivery pump. The input pipe of the shear pump is connected to the output pipe of the emulsifying tank, the output pipe of the shear pump is connected to the input pipe of the delivery pump, and the output pipe of the delivery pump is connected to the mixing device.

[0013] Optionally, the emulsification device further includes a pharmaceutical delivery component, the input end of which is connected to the pharmaceutical storage tank, and the output end of which is connected to the emulsification tank.

[0014] Optionally, the emulsification device further includes a level gauge disposed inside the emulsification tank.

[0015] Optionally, the mixing device and the spraying device are located in a first region, the emulsifying device is located in a second region, a maintenance passage is provided between the first region and the second region, and the output pipe of the emulsifying device is connected to the premixing device through the maintenance passage.

[0016] Optionally, the maintenance channel is equipped with a pedal, and the output pipe of the emulsifying device passes through the bottom of the pedal.

[0017] The mixed liquid supply system provided by this utility model has the following beneficial effects:

[0018] This invention can perform reverse cleaning and forward cleaning of the spray pump. During reverse cleaning, clean water enters the spray pump from the pump cleaning pipe in reverse, while sewage flows from the pump input pipe into the pump discharge pipe. During forward cleaning, clean water enters the spray pump output pipe from the pump cleaning pipe, preventing the agglomerating compound agent from depositing in the pipe after long-term operation and avoiding clogging of the spray pump. Attached Figure Description

[0019] Figure 1 This is an isometric view of the mixture supply system in an embodiment of this utility model;

[0020] Figure 2 This is a front view of the mixture supply system in an embodiment of this utility model;

[0021] Figure 3 This is a top view of the mixture supply system in an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100 - Emulsification unit; 110 - Chemical storage tank; 120 - Emulsification tank; 130 - Emulsification pump set;

[0024] 200 - Mixing device; 210 - Mixing tank; 220 - Overflow pipe; 230 - Tank drain pipe; 240 - Tank cleaning pipe;

[0025] 300 - Spraying device; 310 - Spray pump; 320 - Pump cleaning pipe; 330 - Pump drain pipe;

[0026] 410 - Premixing unit; 420 - Premixing branch pipe;

[0027] 510 - Step; 520 - Escalator; 530 - Work platform. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is an isometric view of the mixture supply system in an embodiment of this utility model. Figure 2 This is a front view of the mixture supply system in an embodiment of this utility model. Figure 3 This is a top view of the mixing liquid supply system in an embodiment of the present invention. This embodiment provides a mixing liquid supply system including an emulsifying device 100, a mixing device 200, and a spraying device 300. The inlet pipe of the mixing device 200 is connected to both a wastewater inlet pipe and the outlet pipe of the emulsifying device 100. It also includes a pump inlet valve. The spraying device 300 includes a spray pump 310, a nozzle, a pump cleaning pipe 320, a pump drain pipe 330, a pump cleaning valve, and a pump drain valve. The input pipe of the spray pump 310 is connected to the outlet pipe of the mixing device 200, the output pipe of the spray pump 310 is connected to the nozzle, and the nozzle is connected to a flue. The pump cleaning pipe 320 is connected to the output pipe of the spray pump 310, and the pump drain pipe 330 is connected to the input pipe of the spray pump 310. The pump cleaning valve is located on the pump cleaning pipe 320, the pump drain valve is located on the pump drain pipe 330, and the pump inlet valve is located on the outlet pipe of the mixing device 200.

[0035] This allows for both reverse and forward cleaning of the spray pump 310. During reverse cleaning, clean water enters the spray pump 310 from the pump cleaning pipe 320, while wastewater flows from the input pipe of the spray pump 310 into the pump drain pipe 330. During forward cleaning, clean water enters the output pipe of the spray pump 310 from the pump cleaning pipe 320, preventing the agglomerating compound from depositing in the pipes after prolonged operation. By performing both forward and reverse cleaning on the spray pump 310, clogging can be avoided.

[0036] The mixed liquid supply system also includes a premixing device 410, the water inlet pipe of which is connected to the wastewater inlet pipe and the water outlet pipe of the emulsifying device 100, and the water outlet pipe of the premixing device 410 is connected to the water inlet pipe of the mixing device 200.

[0037] By installing a premixing device 410 on the inlet pipe of the mixing device 200, the wastewater and the emulsified agglomerating compound agent can be premixed before entering the mixing device 200 for mixing. Compared with the method of directly entering the mixing device 200 for mixing, the wastewater and the emulsified agglomerating compound agent can be fully mixed.

[0038] Specifically, the premixing device 410 is a static mixer.

[0039] The mixed liquid supply system also includes a premixing branch pipe 420. The inlet of the premixing branch pipe 420 is connected to the inlet pipe of the mixing device 200 and is located upstream of the premixing device 410. The outlet of the premixing branch pipe 420 is connected to the inlet pipe of the mixing device 200 and is located downstream of the premixing device 410. The premixing branch pipe 420 facilitates the maintenance of the premixing device 410.

[0040] The premixed branch pipe 420 is equipped with a premixed branch pipe valve, which is closed during normal operation of the premixed device 410 and open when the premixed device 410 is under maintenance.

[0041] The mixing device 200 includes a mixing tank 210, the inlet pipe of the mixing tank 210 is connected to the wastewater inlet pipe and the outlet pipe of the emulsifying device 100 respectively, the inlet pipe of the spraying device 300 is connected to the outlet pipe of the mixing tank 210, and the premixing device 410 is installed on the inlet pipe of the mixing tank 210.

[0042] The inlet of the premixing branch pipe 420 is connected to the inlet pipe of the mixing tank 210 and is located upstream of the premixing device 410, while the outlet of the premixing branch pipe 420 is connected to the inlet pipe of the mixing tank 210 and is located downstream of the premixing device 410.

[0043] The mixing device 200 also includes a stirrer disposed on the mixing tank 210, wherein the stirring paddle of the stirrer extends into the mixing tank 210 from top to bottom.

[0044] Preferably, the inlet pipe of the mixing tank 210 is located at the top of the mixing tank 210, and the outlet pipe of the mixing tank 210 is located at the bottom of the mixing tank 210, so as to facilitate the thorough mixing of wastewater and emulsified agglomerating compound agent.

[0045] Preferably, the mixed liquid supply system further includes a main drain pipe, and the mixing device 200 further includes an overflow pipe 220, the inlet of which is connected to the top of the mixing tank 210, and the outlet of which is connected to the main drain pipe.

[0046] Furthermore, the mixing device 200 also includes a tank drain pipe 230, the inlet of which is connected to the bottom of the mixing tank 210, and the outlet of which is connected to the main drain pipe.

[0047] The mixed liquid supply system also includes a clean water main pipe, and the mixing device 200 also includes a tank cleaning pipe 240. The clean water main pipe is connected to the inlet end of the tank cleaning pipe 240, and the outlet end of the tank cleaning pipe 240 is connected to the mixing tank 210.

[0048] Preferably, the outlet end of the tank cleaning pipe 240 is connected to the top of the mixing tank 210. This facilitates cleaning the mixing tank 210.

[0049] The pump cleaning pipe 320 is connected to the clean water main pipe, and the pump drain pipe 330 is connected to the drain main pipe.

[0050] The emulsification device 100 includes a reagent storage tank 110, an emulsification tank 120, and an emulsification pump set 130. The reagent storage tank 110 is connected to the emulsification tank 120. The input pipe of the emulsification pump set 130 is connected to the output pipe of the emulsification tank 120. The output end of the emulsification pump set 130 is connected to the premixing device 410.

[0051] The emulsifying pump assembly 130 includes a shear pump and a delivery pump. The input pipe of the shear pump is connected to the output pipe of the emulsifying tank 120, the output pipe of the shear pump is connected to the input pipe of the delivery pump, and the output pipe of the delivery pump is connected to the premixing device 410.

[0052] The emulsification device 100 also includes a pharmaceutical delivery component, the input end of which is connected to the pharmaceutical storage tank, and the output end of which is connected to the emulsification tank 120.

[0053] The emulsification device 100 also includes a level gauge, which is disposed inside the emulsification tank 120.

[0054] The emulsification device 100 also includes a pharmaceutical metering device for measuring the dosage of the pharmaceutical agent flowing into the emulsification tank 120.

[0055] The mixing device 200, the spraying device, and the premixing device 410 are located in the first region, and the emulsifying device 100 is located in the second region. A maintenance channel is provided between the first region and the second region, and the output pipe of the emulsifying device 100 is connected to the premixing device 410 through the maintenance channel.

[0056] The maintenance channel is equipped with a pedal 510, and the output pipe of the emulsifying device 100 passes through the bottom of the pedal 510.

[0057] The mixture supply system also includes an escalator 520 and a work platform 530. The escalator 520 is located on the side of the emulsifying device 100 away from the maintenance passage and is connected to the work platform 530. The work platform 530 is connected to the emulsifying tank 120 and the mixing tank 210.

[0058] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A mixed liquid supply system, comprising an emulsifying device, a mixing device, and a spraying device, wherein the inlet pipe of the mixing device is connected to a wastewater inlet pipe and the outlet pipe of the emulsifying device, characterized in that, It also includes a pump inlet valve. The spraying device includes a spray pump, a nozzle, a pump cleaning pipe, a pump drain pipe, a pump cleaning valve, and a pump drain valve. The input pipe of the spray pump is connected to the outlet pipe of the mixing device, the output pipe of the spray pump is connected to the nozzle, the nozzle is connected to the flue, the pump cleaning pipe is connected to the output pipe of the spray pump, the pump drain pipe is connected to the input pipe of the spray pump, the pump cleaning valve is installed on the pump cleaning pipe, the pump drain valve is installed on the pump drain pipe, and the pump inlet valve is installed on the outlet pipe of the mixing device.

2. The mixture supply system as described in claim 1, characterized in that, It also includes a main clean water pipe, and the mixing device also includes a tank cleaning pipe. The inlet end of the main clean water pipe and the tank cleaning pipe are connected, and the outlet end of the tank cleaning pipe is connected to the mixing device.

3. The mixture supply system as described in claim 2, characterized in that, The outlet of the tank cleaning pipe is connected to the top of the mixing device.

4. The mixture supply system as described in claim 2, characterized in that, The pump cleaning pipe is connected to the main clean water pipe.

5. The mixture supply system as described in claim 1, characterized in that, The emulsification device includes a reagent storage tank, an emulsification tank, and an emulsification pump set. The reagent storage tank is connected to the emulsification tank, the input pipe of the emulsification pump set is connected to the output pipe of the emulsification tank, and the output end of the emulsification pump set is connected to the mixing device.

6. The mixture supply system as described in claim 5, characterized in that, The emulsifying pump assembly includes a shear pump and a delivery pump. The input pipe of the shear pump is connected to the output pipe of the emulsifying tank, the output pipe of the shear pump is connected to the input pipe of the delivery pump, and the output pipe of the delivery pump is connected to the mixing device.

7. The mixture supply system as described in claim 5, characterized in that, The emulsification device also includes a pharmaceutical delivery component, the input end of which is connected to the pharmaceutical storage tank, and the output end of which is connected to the emulsification tank.

8. The mixture supply system as described in claim 5, characterized in that, The emulsification device also includes a level gauge, which is disposed inside the emulsification tank.

9. The mixture supply system as described in claim 1, characterized in that, The mixing device and the spraying device are located in the first area, and the emulsifying device is located in the second area. A maintenance channel is provided between the first area and the second area, and the output pipe of the emulsifying device is connected to the mixing device through the maintenance channel.

10. The mixture supply system as described in claim 9, characterized in that, The maintenance channel is equipped with a pedal, and the output pipe of the emulsifying device passes through the bottom of the pedal.

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