Filtering device for solid-liquid separation

Abstract

The utility model discloses a filtering device for solid-liquid separation. The filter is provided with a stock solution inlet, a first clear liquid outlet and a second clear liquid outlet, the first clear liquid outlet and the second clear liquid outlet are respectively communicated with the gas heater through pipelines, and the first clear liquid outlet and the second clear liquid outlet are respectively and sequentially communicated with the condenser and the storage tank through pipelines; and the first clear liquid outlet and the second clear liquid outlet are respectively communicated with the storage tank through pipelines. According to the utility model, the continuous operation of the filtering process can be ensured, the filtering element is regenerated, the filtering operation can be ensured to be completed under the completely closed adjustment, the moisture content of the solid material can be adjusted, and the automatic deslagging can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production, in particular to a filtering device for solid-liquid separation. Background Art

[0002] In chemical production equipment, filtration is the most common unit operation. It is usually used to separate catalysts after reaction, filter out products after crystallization, or remove solid impurities in liquid materials. This unit operation involves heterogeneous solid media, which is usually labor-intensive, with poor environmental hygiene and high safety risks. Solid-liquid separation is a common operating unit in chemical production equipment. There are three common difficulties in solid-liquid separation: continuous operation, closed operation, and control of solid moisture content. Currently common separation devices such as pusher centrifuges solve the problems of continuous operation and control of solid moisture content. However, due to the presence of moving parts, it is difficult to achieve complete sealing and is not suitable for fire and explosion hazardous places. The filtration system of gas competition equipment cannot control the moisture content and it is difficult to achieve continuous operation. Existing filtration devices cannot solve the three problems at the same time. Summary of the invention

[0003] The purpose of the utility model is to make up for the shortcomings of the prior art and provide a filtering device for solid-liquid separation.

[0004] The technical solution of this utility model:

[0005] A filtering device for solid-liquid separation includes a filter, wherein the filter is provided with a raw liquid inlet, a first clear liquid outlet, and a second clear liquid outlet, wherein the first clear liquid outlet and the second clear liquid outlet are respectively connected to a gas heater through pipelines, wherein the first clear liquid outlet and the second clear liquid outlet are respectively connected to a condenser and a storage tank in sequence through pipelines, and wherein the first clear liquid outlet and the second clear liquid outlet are respectively connected to the storage tank through pipelines.

[0006] Preferably, the filter is also provided with a pressure relief port, which is connected with the condenser and the storage tank in sequence through a pipeline.

[0007] Preferably, a plurality of filters are arranged in parallel.

[0008] Preferably, valves are provided on the pipelines.

[0009] Preferably, the gas heater is directly heated by electric heating wire, indirectly heated by steam, or indirectly heated by hot water.

[0010] Preferably, the filter is also provided with a discharge port.

[0011] The utility model has the following beneficial effects:

[0012] 1. It can ensure the continuous operation of the filtration process and regenerate the filter element.

[0013] 2. It can ensure that the filtering operation is completed under completely closed regulation.

[0014] 3. The moisture content of solid materials can be adjusted.

[0015] 4. Automatic slag discharge can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] In the figure: gas heater 1, first filter 2, second filter 3, condenser 4, storage tank 5, first control valve a, second control valve b, third control valve c, fourth control valve d, fifth control valve e, sixth control valve f, seventh control valve g, eighth control valve h, ninth control valve i, pressure relief port j, slag discharge port k. DETAILED DESCRIPTION

[0019] Example 1

[0020] A filtering device for solid-liquid separation comprises a first filter 2 and a second filter 3, the filter 2 is provided with a raw liquid inlet, a first clear liquid outlet, and a second clear liquid outlet, the first clear liquid outlet and the second clear liquid outlet are respectively connected to a gas heater 1 through pipelines, the first clear liquid outlet and the second clear liquid outlet are respectively connected to a condenser 4 and a storage tank 5 in sequence through pipelines, and the first clear liquid outlet and the second clear liquid outlet are respectively connected to the storage tank 5 through pipelines.

[0021] Preferably, the first filter 2 is also provided with a pressure relief port, which is connected with the condenser 4 and the storage tank 5 in sequence through a pipeline.

[0022] Preferably, the first filter 2 and the second filter 3 are arranged in parallel.

[0023] Preferably, valves are provided on the pipelines.

[0024] Preferably, the gas heater 1 is directly heated by electric heating wires, indirectly heated by steam, or indirectly heated by hot water.

[0025] Preferably, the first filter 2 and the second filter 3 are also provided with a discharge port.

[0026] Specifically in this embodiment 1, the valve type can be a stop valve, a gate valve, a ball valve, or a butterfly valve, and the valve actuator can be a pneumatic actuator or an electric actuator. The control system controls the ak automatic valve, and the automatic control system can be controlled by PLC programming or DCS programming.

[0027] The specific process is as follows: Taking the first filter 2 as an example,

[0028] The gas heater 1 realizes heating control of the gas, and the first filter 2 performs filtering to realize solid-liquid separation, and produces clear liquid and solid. The gas condenser 4 cools the gas that has passed through the filter pressure filtration, cooling, drying, and pressure relief to realize the recovery of materials. The storage tank 5 stores the filtered clear liquid and the liquid recovered by the condenser 4. The program-controlled valve realizes different processes and the function of continuous filtration by controlling the program switch. The specific process is as follows:

[0029] Normal filtration: The raw liquid passes through the first control valve a-the first filter 2-the second control valve b-the storage tank (other valves are closed) to achieve solid-liquid separation, the clear liquid goes to the storage tank, and the solid remains in the filter.

[0030] Filter pressing: The unheated inert gas passes through the fourth control valve d - the first filter 2 - the fifth control valve e - the storage tank 5 (other valves are closed), and the liquid remaining in the filter is pressed into the storage tank 5, and the solid remains in the filter.

[0031] Large hot blow: The heated inert gas passes through the fourth control valve d-the first filter 2-the third control valve c-the condenser 4-the storage tank 5 (other valves are closed). The hot gas vaporizes the liquid adsorbed on the solid and takes it away. After condensation in the condenser 4, the liquid enters the storage tank 5. At the same time, the gas flows back through the main filter element to achieve the shedding and regeneration of the main filter element.

[0032] Small hot blow: The heated inert gas passes through valve f-first filter 2-ninth control valve i-condenser 4-storage tank 5 (other valves are closed), and the hot gas continues to vaporize the liquid adsorbed on the solid and takes it away. After condensation in condenser 4, the liquid enters storage tank 5. At the same time, the gas flows back through the auxiliary filter element to achieve the shedding and regeneration of the auxiliary filter element.

[0033] The solid moisture content can be controlled by adjusting the time of high heat blowing and low heat blowing.

[0034] Pressure relief: The slightly positive pressure gas remaining in the filter 2 passes through the pressure relief port j - condenser 4 - storage tank 5 (other valves are closed). The vaporized process medium components in the gas are condensed by the condenser 4 and then the liquid enters the storage tank. The pressure control in the first filter 2 is basically the same as that in the atmosphere.

[0035] Slag discharge: Open the slag discharge port k, and the solids in the first filter 2 are discharged and enter the belt conveyor or silo.

[0036] Multiple filters can be set up according to production capacity needs, and they can be switched to achieve continuous operation.

[0037] The above are only relatively preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filtering device for solid-liquid separation, comprising a filter, characterized in that: The filter is provided with a raw liquid inlet, a first clear liquid outlet, and a second clear liquid outlet. The first clear liquid outlet and the second clear liquid outlet are connected to the gas heater through pipelines, respectively. The first clear liquid outlet and the second clear liquid outlet are connected to the condenser and the storage tank in sequence through pipelines, respectively. The first clear liquid outlet and the second clear liquid outlet are connected to the storage tank through pipelines, respectively.

2. The solid-liquid separation filtering device according to claim 1, characterized in that: The filter is also provided with a pressure relief port, which is connected with the condenser and the storage tank in sequence through a pipeline.

3. The solid-liquid separation filtering device according to claim 1, characterized in that: The filters are provided with a plurality of parallel arrangements.

4. The filtering device for solid-liquid separation according to claim 1, characterized in that: The pipelines are all provided with valves.

5. The filtering device for solid-liquid separation according to claim 1, characterized in that: The gas heater is directly heated by electric heating wire or indirectly heated by steam or indirectly heated by hot water.

6. The solid-liquid separation filtering device according to claim 1, characterized in that: The filter is also provided with a discharge port.

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