CN201200826Y - Tar ammonia water clarification separating tank - Google Patents

Abstract

The utility model provides a can high-efficiently separate clarification separating tank of tar, aqueous ammonia, tar sediment three-phase mixture, the bottom including the head is curved rectangular cell body, and the top of the afterbody of cell body is equipped with the inlet tube, and the head of cell body is equipped with puts the sediment funnel. One side of the head of the tank body is provided with a tar emptying pipe, and the other side is provided with an ammonia water outlet pipe. A bearing isolation chamber and a splash baffle are sequentially arranged in the tank body corresponding to the inlet pipe; a scraper conveyor is arranged at the bottom in the groove body. The central position of the head of the tank body is provided with a tar liquid level regulator connected with a tar emptying pipe to adjust the height of tar level in the tank, so that the water content and the tar residue content of tar can be controlled. The utility model discloses an adjustment clarification tank technology mouth of pipe position has changed the inslot medium flow direction (three-phase medium syntropy flows) to at the regional stable separating layer that forms of separating tank head, the separation zone liquid level is calm, stable, and the scum volume improves 53%, and the tar water content descends 1.5%.

Description

A kind of clarification separation tank of tar ammonia water

technical field

The utility model belongs to the field of chemical machinery and relates to a device for separating coarse suspensions, in particular to a device for separating a three-phase mixture of tar, ammonia water and tar residue - tar ammonia water clarification and separation tank.

Background technique

The mixture of tar, ammonia water and tar residue is a mixture of emulsion and suspension. The relative densities of tar, ammonia water, and tar residue are different, and the difference between the three is large. After the mixed solution enters the tank, the flow rate decreases, and the tar, ammonia water, and tar residue settle and separate, resulting in the precipitation of ammonia water layer, tar layer, and tar residue. layers, which are respectively exported from the tank to realize the separation of the tar, ammonia, tar residue mixed liquid. A process equipment commonly used in the coking industry for separating tar, ammonia water and tar residue is shown in Figure 1. The equipment is simple and practical, and easy to maintain, but the separation efficiency is not high; in addition, the structure of the equipment is unreasonable, the solid-liquid two-phase flow reverses in the tank, the layered area is blurred, and the layered layer is unstable; the inlet of the mixed liquid is close to the outlet of the tar residue , the liquid surface at the head of the clarification tank is prone to splashing, "boiling, bubbling, tumbling" and other phenomena, and the tar residue that has been precipitated and separated and scraped off by the scraper machine is washed back into the tank, especially fine-grained solids are more serious .

With the application of high-pressure ammonia-water smokeless coal charging technology, tar residues such as fine coal powder and fine coke powder entering the tar-ammonia-water mixture have increased significantly, and a large number of unprecipitated tar residues have entered the subsequent tar storage tank together with the tar. It precipitates in it, and when the amount of slag is large, the equipment will be blocked, causing the system to stop working and affecting production. Every year, a large amount of manpower is regularly organized to clean up the tar storage tanks and process equipment, which is very difficult.

Contents of the invention

The purpose of this utility model is to provide a kind of high-efficiency separation of tar, ammonia water, tar residue mixed liquid, little interference in the separation layer, no splashing, "boiling, bubbling, tumbling" phenomenon on the liquid surface in the separation area, forming a stable separation area, separation The layer of tar and ammonia clarifies the separation tank.

The clarification and separation tank for tar ammonia water of the present invention comprises a long tank with an arc-shaped bottom at the head, an inlet pipe is provided at the top of the tail of the tank, and a slagging funnel is provided at the head of the tank. One side of the head of the tank body is provided with a tar discharge pipe, and the other side is provided with an ammonia water outlet pipe. The corresponding inlet pipe in the tank body is provided with a receiving isolation room and a splash baffle in sequence; a scraper conveyor is installed at the bottom of the tank body.

At the center of the tank head, a tar liquid level regulator connected to the tar vent pipe is installed to adjust the height of the tar level in the tank, so that the water content of the tar and the amount of tar residue can be controlled.

A floating tar slag baffle is provided at the ammonia water outlet pipe at the head of the tank body to control the separation of floating tar and other floating objects floating on the ammonia water into the ammonia water.

The mixed liquid enters the tank from the inlet pipe at the end of the clarifier through the bearing isolation chamber, tar, ammonia water, and tar residue flow in the same direction to the head of the clarifier, and the mixed liquid forms a stable separation zone and a separation layer in the head of the clarifier ( The upper layer is an ammonia water layer, the middle layer is a tar layer, and the bottom layer is a tar residue solid matter precipitation layer). The ammonia water layer is discharged from the outlet pipe on one side of the clarifier head; the tar layer is drawn out from the other side of the clarifier head through the tar level regulator at the center of the clarifier head; the tar residue deposited on the bottom of the clarifier is moved The scraper is sent to the tail slag discharge funnel for discharge.

Compared with the equipment of the prior art, the utility model has the following advantages:

1. The utility model changes the flow direction of the medium in the tank by adjusting the position and parameters of the process nozzle of the clarification tank, the parameters, the position and direction of the bearing isolation chamber components, etc., and the three-phase medium (tar, ammonia water, tar residue) flows in the same direction to form a stable separation zone , the separation layer and the liquid level in the separation zone fundamentally eliminate the liquid surface splashing, "boiling", bubbling and tumbling phenomenon caused by the mixed liquid entering the head of the original clarification tank, and solve the unclear separation of the three-phase medium. It is difficult for the machine to scrape out the tar residue and rush it back into the tank. , without splashing, bubbling, and churning, the liquid surface is calm and stable, which improves the separation efficiency (the amount of slag discharge is 53% higher than that of the original equipment), and greatly reduces the amount of slag entrained in ammonia tar and the water content of tar (the water content of tar is higher than that of the original equipment) The original equipment is reduced by 1.5-2%, and the proportion of fine-grained solids in the slag is significantly increased), which reduces the frequency of storage tank cleaning and prolongs the service life of the storage tank. In order to prolong the start-up period of tar, improve the equipment processing capacity and reduce equipment operating costs conditions.

2. The utility model is equipped with a liquid level regulator in the tank, which can adjust the height of the tar surface in the tank, so that the water content of the tar and the amount of tar residue can be controlled.

3. The utility model does not increase investment, does not require heat preservation, and is easy to maintain and use. It can be suitable for the transformation of old plant equipment, and can also be adapted to the construction and application of new plants. It has wide practicability and promotion value in the coking industry.

Description of drawings

Fig. 1 is a structural schematic diagram of the prior art.

Fig. 2 is a schematic structural view of the utility model.

Fig. 3 is a process plan view of the utility model.

1——tank 2——inlet pipe 3——receiving isolation chamber 4——liquid level regulator

5——Floating tar slag baffle 6——Splash baffle 7——Slagging funnel

8——Scraper Conveyor 9——Ammonia Water Outlet Pipe 10——Tar Vent Pipe

Detailed ways

Below in conjunction with Fig. 2, Fig. 3 accompanying drawing, the utility model is further described:

The utility model high-efficiency mechanized tar ammonia water clarification and separation tank is a long tank body 1 with an arc-shaped head and bottom, an inlet pipe 2 is provided at the top of the tail of the tank body, and a slag discharge funnel 7 is provided at the head of the tank body. One side of the tank head is provided with a tar venting pipe 10, and the other side is provided with an ammonia water outlet pipe 9. A receiving isolation chamber 3 and a splash-proof baffle 6 are sequentially arranged in the corresponding inlet pipe in the tank body. A floating tar residue baffle 5 is provided at the ammonia water outlet pipe 9 at the head of the tank body, and a tar liquid level regulator 4 connected with a tar venting pipe 10 is provided at the center of the tank body head. The bottom of the tank body is provided with a scraper conveyor 8.

The receiving isolation chamber 3 receives the tar-ammonia-water mixture from the inlet pipe 2, where the mixture is evenly distributed on the tar layer. The anti-splash baffle 6 is a sieve-plate type arc-shaped structural part, which can prevent erosion and distribute liquid, and can be used for two purposes. The liquid level regulator 4 is used to adjust the height of the tar level in the tank, so that the water content of the tar and the amount of tar residue can be controlled. Floating tar residue baffle plate 5 is used for controlling and separating the floats such as floating tars floating on the ammonia water to enter among the ammonia water. The scraper conveyor 8 sends the tar slag deposited on the bottom of the tank body 1 to the slag discharge funnel 7 at the head of the tank body 1 at a moving speed of 0.025 m/min.

The mixed liquid enters the tank body from the inlet pipe 2 at the tail of the tank body 1 through the receiving isolation chamber 3 and the splash baffle plate 6, and the tar, ammonia water, and tar residue flow in the same direction (to the head of the tank body), and are discharged at the head of the tank body. A stable separation layer is formed in the upper region (the upper layer is an ammonia water layer, the middle layer is a tar layer, and the bottom layer is a tar residue solid sedimentation layer). The ammonia water layer is discharged from the outlet pipe 9 on one side of the clarifier head; the tar layer is drawn out from the tar vent pipe 10 on the other side of the clarifier head through the tar liquid level regulator 4 at the center of the clarifier head; The tar residue at the bottom of the clarification tank is sent to the tail slag discharge funnel 7 by the mobile scraper machine 8 for discharge.

Claims (3)

1. A clarification and separation tank for tar ammonia water, comprising an elongated tank body (1) with an arc-shaped head bottom, an inlet pipe (2) is arranged on the upper part of the tank body, and receiving pipes (2) are sequentially arranged at the corresponding inlet pipes (2) in the tank body. Isolation chamber (3), splash guard (6), scraper conveyor (8) is provided at the bottom of the tank body; a slag discharge funnel (7) is provided at the head of the tank body, and it is characterized in that: the inlet pipe ( 2) It is arranged at the tail of the tank; one side of the head of the tank is provided with a tar discharge pipe (10), and the other side is provided with an ammonia water outlet pipe (9). 2. The clarification and separation tank for tar and ammonia water according to claim 1, characterized in that a tar liquid level regulator (4) connected to the tar discharge pipe (10) is arranged at the center of the head of the tank body. 3. The clarification and separation tank for tar and ammonia water according to claim 1, characterized in that a floating tar residue baffle (5) is provided at the ammonia water outlet pipe (9) at the head of the tank body.

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