Carbonized tail gas separator

Abstract

The utility model relates to the field of tail gas separation, and discloses a carbonized tail gas separator which comprises a straight barrel I, the front end of the straight barrel I is fixedly communicated with an eccentric reducing barrel body, the top of the straight barrel I is aligned with the top of the eccentric reducing barrel body, the diameter of an inlet end on the front side of the eccentric reducing barrel body is smaller, and the diameter of an outlet end on the rear side of the eccentric reducing barrel body is smaller. The front end of the eccentric reducing cylinder is fixedly connected with a first end socket, the middle of the front end of the first end socket is fixedly communicated with a first connecting pipe, the outer wall of the front end of the first connecting pipe is fixedly connected with a first flange, the rear end of the first straight cylinder is fixedly connected with a second end socket, the rear side of the inner wall of the eccentric reducing cylinder is vertically and fixedly connected with a baffle, and the bottom of the baffle is located below the first connecting pipe. Through the design of the vertical baffle, condensate drops in tail gas are effectively intercepted, efficient gas-liquid separation is achieved, the influence of condensate on the follow-up process is reduced, a horizontal eccentric different-diameter structure and the bottom slope design are adopted, it is ensured that the condensate can smoothly flow into the liquid accumulation bag and is discharged, and the condensate is effectively prevented from flowing backwards into the carbonization tower.

Description

Technical Field

[0001] The present utility model relates to the field of tail gas separation, and specifically relates to a carbonization tail gas separator. Background Art

[0002] In soda ash production, the carbonization tail gas generated by the carbonization of ammoniated brine is discharged from the top of the scrubbing tower and the soda-making tower, and enters the carbonization tail gas separator for gas-liquid separation. Before entering the carbonization tail gas separator, affected by the ambient temperature, the partial pressure of water vapor in the tail gas decreases, resulting in the condensation of a part of the water vapor. The operating pressure of the carbonization tail gas is about 50 kPa. Under this driving force, the condensed water is difficult to overcome the system resistance and enter the carbonization tail gas separator at a high position, and can only flow back to the carbonization tower along the main pipe of the carbonization tail gas, forming backflow.

[0003] The current carbonization tail gas separator adopts a vertical gas-liquid separator type. The carbonization tail gas enters from the lower end pipe orifice and is led out from the top pipe orifice. During the upward movement of the tail gas, the condensed liquid is discharged from the side pipe orifice, thereby realizing gas-liquid separation. The increase in the amount of condensed liquid will lead to insufficient upward driving force of the tail gas, causing the condensed liquid to flow back and backflow into the carbonization tower. Content of the Utility Model

[0004] In order to overcome the above deficiencies, the present utility model provides a carbonization tail gas separator.

[0005] The technical solution adopted by the present utility model is as follows:

[0006] A carbonization tail gas separator includes a first straight cylinder. The front end of the first straight cylinder is fixedly communicated with an eccentric reducer cylinder. The top of the first straight cylinder is aligned with the top of the eccentric reducer cylinder. The diameter of the front side inlet end of the eccentric reducer cylinder is smaller. The front end of the eccentric reducer cylinder is fixedly connected with a first head. The middle part of the front end of the first head is fixedly communicated with a first pipe. The outer wall of the front end of the first pipe is fixedly connected with a first flange. The rear end of the first straight cylinder is fixedly connected with a second head. The inner wall of the rear side of the eccentric reducer cylinder is vertically and fixedly connected with a baffle. The bottom of the baffle is located below the horizontal plane of the first pipe. The top of the first straight cylinder is fixedly communicated with an outlet pipe. The top of the outer wall of the outlet pipe is fixedly connected with a second flange. The bottom of the first straight cylinder is vertically and fixedly communicated with a second straight cylinder. The bottom of the second straight cylinder is fixedly connected with a third head. The center of the bottom of the third head is fixedly communicated with a second pipe. The top of the outer wall of the second pipe is fixedly connected with a third flange.

[0007] Both the left and right sides of the rear of the bottom of the first straight cylinder are fixedly connected with rear legs extending downward. Both the left and right sides of the bottom of the eccentric reducer cylinder are fixedly connected with front legs extending downward. The bottoms of the front legs and the rear legs are at the same horizontal level.

[0008] The beneficial effects of the present utility model are as follows:

[0009] The utility model effectively intercepts the condensed liquid droplets in the tail gas through the design of the vertical baffle, realizes efficient gas-liquid separation, reduces the influence of the condensed liquid on the subsequent process, adopts a horizontal, eccentric and different-diameter structure and a bottom slope design to ensure that the condensed liquid can flow smoothly into the liquid accumulation package by gravity and be discharged, effectively preventing the backflow of the condensed liquid into the carbonization tower and maintaining the balance and stability of the carbonation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic cross-sectional view of the right side view of the utility model;

[0011] Figure 2 is the front view of the utility model.

[0012] In all the drawings, the reference numerals are specifically as follows: 1, straight cylinder one; 2, eccentric and different-diameter cylinder body; 3, head one; 4, connecting pipe one; 5, flange one; 6, head two; 7, baffle; 8, gas outlet pipe; 9, flange two; 10, straight cylinder two; 11, head three; 12, connecting pipe two; 13, flange three; 14, rear support leg; 15, front support leg. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] As Figure 1-2 shown: A carbonated tail gas separator includes a straight cylinder one 1, the front end of the straight cylinder one 1 is fixedly communicated with an eccentric and different-diameter cylinder body 2, the tops of the straight cylinder one 1 and the eccentric and different-diameter cylinder body 2 are aligned, the diameter of the front side inlet end of the eccentric and different-diameter cylinder body 2 is smaller, the front end of the eccentric and different-diameter cylinder body 2 is fixedly connected with a head one 3, the middle of the front end of the head one 3 is fixedly communicated with a connecting pipe one 4, the outer wall of the front end of the connecting pipe one 4 is fixedly connected with a flange one 5, the rear end of the straight cylinder one 1 is fixedly connected with a head two 6, a baffle 7 is vertically and fixedly connected to the rear side inner wall of the eccentric and different-diameter cylinder body 2, the bottom of the baffle 7 is located horizontally below the connecting pipe one 4, the top of the straight cylinder one 1 is fixedly communicated with a gas outlet pipe 8, the top of the outer wall of the gas outlet pipe 8 is fixedly connected with a flange two 9, the bottom of the straight cylinder one 1 is vertically and fixedly communicated with a straight cylinder two 10, the bottom of the straight cylinder two 10 is fixedly connected with a head three 11, the center of the bottom of the head three 11 is fixedly communicated with a connecting pipe two 12, and the top of the outer wall of the connecting pipe two 12 is fixedly connected with a flange three 13.

[0014] Both the left and right sides of the rear of the bottom of the straight cylinder one 1 are fixedly connected with rear support legs 14 extending downward, both the left and right sides of the bottom of the eccentric and different-diameter cylinder body 2 are fixedly connected with front support legs 15 extending downward, and the bottoms of the front support legs 15 and the rear support legs 14 are at the same level.

[0015] The carbonated tail gas from the top of the scrubbing tower and the carbonization tower, carrying condensed liquid droplets, enters the inlet end of the eccentric reducer cylinder 2 through the connecting pipe 1. During the process of the tail gas entering the straight cylinder 1 through the eccentric reducer cylinder 2, it encounters the baffle 7 fixedly connected vertically. The baffle 7 can effectively intercept the condensed liquid droplets in the tail gas, preventing them from continuing to rise with the tail gas and instead freely settling to the bottom of the separator.

[0016] The condensed liquid that has settled to the bottom of the separator flows by gravity along the slope formed by the bottom of the straight cylinder 1 and the straight cylinder 2 10 into the liquid accumulation package (i.e., the area of the head 3 11 and its connected connecting pipe 2 12). The design of the liquid accumulation package can buffer and discharge the bubbles entrained in the liquid droplets to ensure the purity of the condensed liquid. After that, the condensed liquid flows by gravity through the connecting pipe 2 12 into the bottom liquid storage tank of the carbonated tail gas ammonia purification tower.

[0017] The tail gas from which a large amount of condensed liquid has been separated by the baffle 7 continues to rise through the straight cylinder 1 and finally discharges from the outlet pipe 8 at the top. At this time, the condensed liquid droplets in the tail gas have been basically removed, and the tail gas enters the carbonated tail gas ammonia purification tower for the next step of NH3 and CO2 recovery treatment.

Claims

1. A carbonization tail gas separator, characterized in that: The invention comprises a straight cylinder (1), the front end of the straight cylinder (1) is fixedly connected to an eccentric reducing cylinder (2), the tops of the straight cylinder (1) and the eccentric reducing cylinder (2) are aligned, the front inlet end of the eccentric reducing cylinder (2) has a smaller diameter, the front end of the eccentric reducing cylinder (2) is fixedly connected to a head (3), the middle of the front end of the head (3) is fixedly connected to a pipe (4), the front end outer wall of the pipe (4) is fixedly connected to a flange (5), the rear end of the straight cylinder (1) is fixedly connected to a head (6), the inner wall of the eccentric reducing cylinder (2) is fixedly connected to a flange (5), and the inner wall of the eccentric reducing cylinder (2) is fixedly connected to a flange (6). A baffle (7) is vertically fixedly connected to the rear side, the bottom of the baffle (7) is located below the level of the pipe 1 (4), the top of the straight cylinder 1 (1) is fixedly connected to an air outlet pipe (8), the top of the outer wall of the air outlet pipe (8) is fixedly connected to a flange 2 (9), the bottom of the straight cylinder 1 (1) is vertically fixedly connected to a straight cylinder 2 (10), the bottom of the straight cylinder 2 (10) is fixedly connected to a head 3 (11), the center of the bottom of the head 3 (11) is fixedly connected to a pipe 2 (12), and the top of the outer wall of the pipe 2 (12) is fixedly connected to a flange 3 (13).

2. A carbonized tail gas separator according to claim 1, characterized in that: The left and right sides of the bottom rear of the straight cylinder (1) are fixedly connected with rear legs (14) extending downwards, and the left and right sides of the bottom of the eccentric diameter-changing cylinder (2) are fixedly connected with front legs (15) extending downwards, and the bottoms of the front legs (15) and the rear legs (14) are located at the same level.

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