CN204275619U - For the filter of coal tar deep processing - Google Patents

Abstract

A kind of filter that is used for the deep processing of coal tar comprises filter cylinder body, is provided with filtrate feeding port (11) and discharge port (12) on filter cylinder body, and filter cylinder body is formed by outer cylinder body ( 1) and the inner cylinder (2), the outer cylinder (1) is sealed on the peripheral surface, the inner cylinder (2) is composed of the cylinder frame (21) and the filter screen (22), the filter screen (22) is cylindrical It is fixed on the cylinder frame (21) to form the filter peripheral surface of the inner cylinder (2), and the outer cylinder inner cavity ( 13) has a storage cavity (14), a sewage outlet (15) is provided at the bottom of the storage cavity (14), and a cleaning device is provided on the outer cylinder (1) at the top of the storage cavity (14). The agent feed port (16), the filtrate feed port (11) is located on the outer cylinder (1), and the bottom of the outer cylinder (1) is provided with an outlet for discharging filter residues (17). The advantages are: the automatic control of blowing the filter residue through the pressure difference is realized without stopping, the filter area is large, the filter efficiency is high, the energy consumption is low, and the operation is convenient.

Description

Filters for deep processing of coal tar

technical field

The utility model relates to a filter device, in particular to a filter for deep processing of coal tar.

Background technique

There is an existing Chinese utility model patent with the application number CN201220675358.0 titled "Filtration Device for Coal Tar Processing Tar Residue" which discloses a kind of filtering device for processing tar residue from coal tar to solve the problem of tar tube heating furnace in the prior art. The furnace tube is easy to block and coke. It is formed by connecting a filter one and a filter two in parallel, and the inside of the first filter and the filter two are equipped with screens. The beneficial effect of the utility model is that the slag in the raw material tar can be effectively removed, and the tar slag can be prevented from entering the plunger pump oil cylinder to cause serious accidents. The novel tar residue filter is simple to manufacture, convenient to install, quick to clean, and can be used alternately without causing production stoppage. However, its disadvantages are that the cleaning of the screen is inconvenient, the efficiency is low, and the filter residue is difficult to completely dispose of, and it is easy to mix into the material, which affects the product quality, so its structure still needs to be improved.

Contents of the invention

The technical problem to be solved by the utility model is to provide a filter for deep processing of coal tar, which has a large filtration area, sufficient filtration, and can directly remove filter residue without disassembly.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: the filter used for deep processing of coal tar comprises a filter cylinder, and the filter cylinder is provided with a filter feed port for the filter material and a filtered material The discharge port of the filter is characterized in that: the filter cylinder is composed of an outer cylinder and an inner cylinder placed in the inner cavity of the outer cylinder, the peripheral surface of the outer cylinder is sealed, and the inner cylinder is composed of a cylinder holder and an inner cylinder. The filter screen is composed of a filter screen, which is fixed on the cylinder holder in a cylindrical shape to form the filter peripheral surface of the inner cylinder body, and there is a filter in the inner cavity of the outer cylinder body between the outlet of the outer cylinder body and one end of the inner cylinder body. The accommodating chamber for the rear material is provided with a sewage outlet with a first valve at the bottom of the accommodating chamber, and a cleaning agent capable of cleaning the inner cylinder with a second valve is provided on the outer cylinder at the top of the accommodating chamber The feed port for the filtrate is located on the outer cylinder above the other end of the inner cylinder, and the bottom of the outer cylinder below the feed inlet for the filtrate is provided with a filter residue outlet of a third valve.

As an improvement, the inner cylinder is composed of a fixed filter part fixed in the inner cavity of the outer cylinder and a detachable detachable filter part, and the fixed filter part is fixed with the outer cylinder through a support plate in the inner cavity of the outer cylinder , the detachable filter part is located below the feed inlet of the filtrate of the outer cylinder.

As a further improvement, one end of the outer cylinder is an elliptical head, the outlet of the filtered material is located at one end of the elliptical head, and the other end of the outer cylinder is provided with an entry hole that maintenance personnel can enter. Set the cover over the access hole.

Further improvement, the diameter of the inlet hole is 500-800 mm.

As an improvement, the end face of the inner cylinder located at one end of the accommodating cavity is a sealing partition through which the filtered matter cannot pass.

As an improvement, the outer cylinder is provided with a differential pressure gauge for the entry of the filtered material and the outflow of the filtered material, the differential pressure gauge is provided with a pressure transmitter, and the first valve, the second valve and the third valve are uniform It is an electric valve, and the pressure transmitter, the first valve, the second valve, and the third valve respectively form a circuit through the circuit and the program-controlled circuit in the program-controlled system. When the impurities in the coal tar pitch in the filter are continuously intercepted When the resistance inside the filter increases, the pressure generated by the inlet or outlet of the filtered material increases and reaches the set value, and the pressure transmitter transmits the electrical signal to the program control system, which is sent by the DCS program control system. Command to open the solenoid valve, so that the first valve, the second valve, and the third valve are respectively opened, and steam or oil cleaning agent is used as the cleaning agent to enter from the first valve, and the filter net is cleaned from the sewage outlet and the filter residue outlet. When the cleaning is completed, the pressure difference in the differential pressure gauge decreases, and the filter system returns to normal operation, and the first valve, the second valve, and the third valve are respectively closed.

As an improvement, the area of the filter screen in the inner cylinder is 50-60% of the total area of the inner cylinder.

As a further improvement, the filter holes of the filter screen can be selected to be square, circular or elliptical, and the distance between the filter holes can be preferably 5mm.

As a further improvement, the filter holes of the filter screen may preferably be square, and the side length of the square may preferably be 8mm.

Compared with the prior art, the utility model has the advantage that it can realize the operation of purging the filter residue automatically through the pressure difference without stopping. The filter has its own cleaning agent feed port and sewage outlet, which can be used to purge the filter during the operation of the device. The process is simple and the operation intensity is low; the filter screen is arranged in a cylindrical shape, with large filtering area, small resistance and high filtering efficiency. ; The filter residue is discharged from the sewage outlet by steam blowing. Although steam is consumed, the cost of extracting equipment for cleaning is reduced. From the perspective of overall energy consumption, energy consumption is effectively reduced.

Description of drawings

Fig. 1 is a side projection view of the utility model embodiment;

Fig. 2 is the sectional view of main parts such as cylinder body along A-A line in Fig. 1;

Fig. 3 is a sectional view along the B-B line in Fig. 2 of the main parts such as the outer cylinder;

Fig. 4 is an enlarged view of the cooperation relationship between the cartridge holder and the filter screen in Fig. 2 .

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Fig. 1 to Fig. 4, the filter that is used for the deep processing of coal tar of the present embodiment comprises filter cylinder body, is provided with the filtrate feed port 11 of filter material and the filter material of filtered material on the filter cylinder body. The discharge port 12 is characterized in that: the filter cylinder is composed of an outer cylinder 1 and an inner cylinder 2 placed in the inner cavity 13 of the outer cylinder, the outer cylinder 1 is sealed around the surface, and the inner cylinder 2. It consists of a cylinder frame 21 and a filter screen 22. The filter screen 22 is fixed on the cylinder frame 21 in a cylindrical shape to form the filter peripheral surface of the inner cylinder body 2. 2 There is an accommodating cavity 14 for the filtered material in the inner cavity 13 of the outer cylinder between one end, and a sewage outlet 15 of the first valve is arranged at the bottom of the accommodating cavity 14, and a sewage outlet 15 of the first valve is arranged at the top of the accommodating cavity 14. The outer cylinder 1 is provided with a cleaning agent inlet 16 capable of cleaning the inner cylinder 2 with a second valve, and the filter inlet 11 is located on the outer cylinder 1 above the other end of the inner cylinder 2. The bottom of the outer cylinder 1 below the filtrate feed port 11 is provided with a filter residue discharge outlet 17 of the third valve. The inner cylinder 2 is composed of a fixed filter part 23 fixed in the inner cavity 13 of the outer cylinder and a detachable detachable filter part 24. The fixed filter part 23 is connected to the outer cylinder through the support plate 25 in the inner cavity 13 of the outer cylinder. The body 1 is fixed together, and the detachable filter part 24 is located below the filtrate inlet 11 of the outer cylinder body 1 . One end of the outer cylinder 1 is an elliptical head, the outlet 12 of the filtered material is located at one end of the elliptical head, and the other end of the outer cylinder 1 is provided with an access hole that maintenance personnel can enter. A cover 18 is provided at the access hole. The diameter D of the inlet hole is 500-800 mm. The end face of the inner cylindrical body 2 located at one end of the accommodating cavity 14 is a sealing partition 26 through which the filtered matter cannot pass. The outer cylinder body 1 is provided with a differential pressure gauge for the entry of the filtered material and the outflow of the filtered material, the differential pressure gauge is provided with a pressure transmitter, and the first valve, the second valve and the third valve are all electric The valve, the pressure transmitter, the first valve, the second valve, and the third valve form a loop through the circuit and the program-controlled circuit in the program-controlled system respectively. When the impurities in the coal tar pitch in the filter are continuously trapped in the filter When the resistance inside the device becomes larger, the pressure generated by the filter inlet 11 or outlet 12 increases and reaches the set value, and the pressure transmitter transmits the electrical signal to the program control system, which is sent by the DCS program control system. Command to open the electromagnetic valve, so that the first valve, the second valve, and the third valve are respectively opened, and steam or oil cleaning agent is used as the cleaning agent to enter from the first valve. Discharge in the outlet 17, when cleaning is finished, the differential pressure in the differential pressure gauge reduces, and the filter system returns to normal operation and closes the first valve, the second valve, and the third valve respectively. The area of the filter screen 22 in the inner cylinder 2 is 50-60% of the total area of the inner cylinder 2 . The filter holes of the filter screen 22 are square, circular or elliptical, and the distance between the filter holes is 5mm. The filter hole of the filter screen 22 in this embodiment is selected as a square, and the side length of the square is 8mm.

Claims (9)

1. A filter for coal tar deep processing, comprising a filter cylinder, the filter cylinder is provided with a filtrate feed inlet (11) of the filter material and a discharge outlet (12) of the filtered material, It is characterized in that: the filter cylinder is composed of an outer cylinder (1) and an inner cylinder (2) placed in the inner cavity (13) of the outer cylinder, the peripheral surface of the outer cylinder (1) is sealed, and The inner cylinder (2) is composed of a cylinder frame (21) and a filter screen (22), and the filter screen (22) is fixed on the cylinder frame (21) in a cylindrical shape to form the filter peripheral surface of the inner cylinder (2) , in the inner cavity (13) of the outer cylinder (13) between the discharge port (12) of the outer cylinder (1) and one end of the inner cylinder (2), there is an accommodating cavity (14) for the filtered material. The bottom of the accommodation chamber (14) is provided with a sewage outlet (15) with a first valve, and the outer cylinder (1) at the top of the accommodation chamber (14) is provided with a second valve capable of cleaning the inner cylinder ( 2) the cleaning agent feed port (16), the filter feed port (11) is located on the outer cylinder (1) above the other end of the inner cylinder (2), and is located at the filter feed port (11) ) bottom of the outer cylinder (1) below is provided with a filter residue outlet (17) of the third valve. 2. The filter according to claim 1, characterized in that: the inner cylinder (2) consists of a fixed filter part (23) fixed in the inner cavity of the outer cylinder (13) and a detachable detachable filter part ( 24), the fixed filter part (23) is fixed together with the outer cylinder (1) through the support plate (25) in the inner cavity (13) of the outer cylinder, and the detachable filter part (24) is located in the outer cylinder (1) The position below the filtrate inlet (11). 3. The filter according to claim 2, characterized in that: one end of the outer cylinder (1) is an elliptical head, and the outlet (12) of the filtered material is located on one end of the elliptical head , the other end of the outer cylinder (1) is provided with an access hole that maintenance personnel can enter, and a cover (18) is provided at the access hole. 4. The filter according to claim 3, characterized in that: the diameter (D) of the inlet hole is 500-800mm. 5. The filter according to any one of claims 1 to 4, characterized in that: the end face of the inner cylinder (2) at one end of the accommodating chamber (14) is a sealing partition (26) through which the filtered material cannot pass. 6. The filter according to any one of claims 1 to 4, characterized in that: the outer cylinder (1) is provided with a differential pressure gauge for the entry of the filtered material and the outflow of the filtered material, and the differential pressure gauge A pressure transmitter is set, the first valve, the second valve and the third valve are all electric valves, and the pressure transmitter, the first valve, the second valve and the third valve are controlled by the circuit and the program respectively. The program-controlled circuit in the system constitutes a loop. When the impurities in the coal tar pitch in the filter are continuously trapped inside the filter and the resistance becomes larger, the pressure generated by the inlet (11) or outlet (12) of the filtrate will When it reaches the set value, the pressure transmitter transmits the electrical signal to the program control system, and the DCS program control system issues an instruction to open the solenoid valve, so that the first valve, the second valve, and the third valve are respectively opened. Steam or degreasing agent enters from the first valve as a cleaning agent, and after cleaning, the filter screen (22) is discharged from the sewage outlet (15) and filter residue outlet (17). When cleaning is completed, the pressure difference in the differential pressure gauge decreases. , the filter system returns to normal operation and closes the first valve, the second valve and the third valve respectively. 7. The filter according to any one of claims 1 to 4, characterized in that: the area of the filter screen (22) in the inner cylinder (2) is 50-60% of the total area of the inner cylinder (2) . 8. The filter according to claim 7, characterized in that: the filter holes of the filter screen (22) are square, circular or oval, and the distance between the filter holes is 5 mm. 9. The filter according to claim 8, characterized in that: the filter hole of the filter screen (22) is a square, and the side length of the square is 8 mm.