Wastewater treatment deamination device for semi-coke production

Abstract

The utility model belongs to the technical field of coal chemical industry wastewater treatment, and particularly discloses a wastewater treatment deamination device for semi-coke production, which comprises a deamination tower body, a water inlet pipe is fixedly connected to the top of the deamination tower body, and a liquid distribution device is arranged at one end, extending into the deamination tower body, of the water inlet pipe and comprises a water inlet branch pipe. A water outlet pipe is fixedly connected to the lower part of the deamination tower body, a heater is fixedly connected to the interior of the lower part of the deamination tower body, and a gas outlet pipe is arranged on the deamination tower body. Aiming at the problem that the semi-coke wastewater cannot be uniformly distributed in the deamination device in the prior art, the liquid distribution device is arranged on the water inlet pipe, so that the effect of uniformly distributing the semi-coke wastewater in the deamination device for deamination is realized; the problem of low decarbonization efficiency caused by non-uniform reaction between wastewater and a solution in a tower due to the fact that semi-coke wastewater cannot be uniformly conveyed into the deamination tower is solved.

Description

Technical Field

[0001] This utility model relates to the field of coal chemical wastewater treatment technology, specifically to an ammonia removal device for wastewater treatment in semi-coke production. Background Technology

[0002] Semi-coke, also known as semi-coke, is a coal conversion product named for its blue flame during combustion. It is obtained by dry distilling raw coal under medium- and low-temperature conditions, typically between 600°C and 800°C. During this process, the organic matter in the raw coal undergoes a series of complex physical and chemical changes, ultimately forming semi-coke. The production process produces coal tar and coke oven gas as byproducts, as well as semi-coke wastewater. Semi-coke has a high fixed carbon content and high resistivity, exhibiting high reactivity and low ash, aluminum, sulfur, and phosphorus content. These characteristics make it an important fuel and reducing agent in the metallurgical industry.

[0003] Semi-coke wastewater mainly originates from the residual circulating ammonia water in the gas purification section of the low-temperature carbonization process of coal, wastewater from semi-coke quenching, as well as circulating cooling water and domestic sewage in the plant area. This wastewater has a complex composition, containing high concentrations of pollutants such as chemical oxygen demand (COD), ammonia nitrogen, and volatile phenols. Existing ammonia removal devices for semi-coke wastewater typically increase the temperature of the wastewater by heating it, thereby increasing the proportion of ammonia nitrogen existing in the form of free ammonia, making it easier for it to escape from the water, and finally removing it through a stripping tower. However, because the current ammonia removal towers used to treat semi-coke wastewater cannot evenly distribute the wastewater within the tower, excessive accumulation of wastewater in certain areas leads to uneven reaction with the solution inside the tower, resulting in low ammonia removal efficiency.

[0004] Therefore, in order to solve the above problems, this utility model provides a wastewater treatment and ammonia removal device for semi-coke production, which solves the problem that the wastewater cannot be uniformly transported to the ammonia removal tower, resulting in uneven wastewater reaction and low decarbonization efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a deammoniation device for wastewater treatment in semi-coke production, so as to solve the problem of uneven wastewater reaction and low decarbonization efficiency caused by the inability to uniformly transport semi-coke wastewater into the deammoniation tower.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: an acid gas emission system for a deammonia removal tower, comprising a deammonia removal tower body, a water inlet pipe fixedly connected to the top of the deammonia removal tower body, a liquid distribution device provided at one end of the water inlet pipe extending into the interior of the deammonia removal tower body, the liquid distribution device including a water inlet pipe, a plurality of water outlet holes provided on the water inlet pipe, a water outlet pipe fixedly connected to the bottom of the deammonia removal tower body, a heater fixedly connected to the interior of the bottom of the deammonia removal tower body, and a gas outlet pipe provided on the deammonia removal tower body.

[0007] The working principle of this utility model is as follows: When in use, the semi-coke wastewater is first transported to the deammoniation tower through the inlet pipe. When the semi-coke wastewater passes through the liquid distribution device on the inlet pipe, it enters the inlet water pipe from the inlet pipe and then exits from the outlet hole on the inlet water pipe, thus uniformly transporting the semi-coke wastewater to the deammoniation tower. Then, the heater in the deammoniation tower heats the semi-coke wastewater to separate the ammonia from the semi-coke wastewater.

[0008] The beneficial effects of this utility model are as follows: By setting a liquid distribution device on the water inlet pipe, this utility model can evenly distribute the semi-coke wastewater in the ammonia removal device for ammonia removal. Compared with the traditional ammonia removal device, this design can avoid the problem of excessive accumulation of semi-coke wastewater in certain areas, which would cause uneven reaction between the wastewater and the solution in the tower, resulting in low ammonia removal efficiency. At the same time, it can also reduce the occurrence of flooding in the tower.

[0009] Option 2, which is a preferred option of the basic option, is equipped with a filter screen inside the water inlet pipe; before the semi-coke wastewater enters the deammoniation tower, the impurities in the wastewater can be filtered to prevent the impurities in the wastewater from clogging the water outlet.

[0010] Option 3, a preferred option of the basic option, is provided with a rotary motor on the ammonia removal tower body, and a stirring rod is fixedly connected to the rotary motor. The stirring rod extends through the ammonia removal tower body and into its interior, and is provided with several stirring blades. The stirring rod can uniformly mix the wastewater and sodium hydroxide aqueous solution in the ammonia removal tower body, thereby improving the ammonia removal efficiency. At the same time, the stirring can increase the contact area between the wastewater and the air, which helps the volatilization and removal of free ammonia.

[0011] Option 4, a preferred option of the basic option, has a bidirectional lead screw fixedly connected to the output shaft of the rotary motor. The bidirectional lead screw passes through the stirring rod, and the stirring rod and the bidirectional lead screw are bolted together. This allows the stirring rod to drive the stirring blades to move up and down, further ensuring that the wastewater and sodium hydroxide aqueous solution in the deammoniation tower are mixed evenly.

[0012] Option 5, which is a preferred option of the basic option, is that the gas outlet pipe is in the form of a coil. Because the gas outlet pipe is distributed in a coil, the gas channel is larger and therefore has a stronger anti-clogging ability. At the same time, it makes the flow path of ammonia longer and makes the ammonia cool faster.

[0013] Option 6, which is a preferred option of the basic option, is provided with a support column at the bottom of the ammonia removal tower body; it provides support for the ammonia removal tower body. Attached Figure Description

[0014] Figure 1 This is a perspective view of a wastewater treatment and ammonia removal device for semi-coke production according to this utility model;

[0015] Figure 2 This is a right view of a wastewater treatment and ammonia removal device for semi-coke production according to this utility model;

[0016] Figure 3 This is a cross-sectional view of a wastewater treatment and ammonia removal device for semi-coke production according to this utility model.

[0017] Figure 4 This is a cross-sectional view of the inlet pipe in a wastewater treatment and ammonia removal device for semi-coke production according to this utility model. Detailed Implementation

[0018] The present invention will be further described in detail below through specific embodiments:

[0019] The reference numerals in the accompanying drawings of the instruction manual include: 1. Ammonia removal tower body; 2. Water inlet pipe; 3. Water inlet pipe; 4. Water outlet hole; 5. Water outlet pipe; 6. Heater; 7. Gas outlet pipe; 8. Filter screen; 9. Rotary motor; 10. Stirring rod; 11. Stirring blade; 12. Double-acting screw; 13. Support column.

[0020] like Figures 1 to 4 As shown: A wastewater treatment and ammonia removal device for semi-coke production includes an ammonia removal tower body 1. A support column 13 is provided at the bottom of the ammonia removal tower body 1. A water inlet pipe 2 is fixedly connected to the top of the ammonia removal tower body 1. A filter screen 8 is provided inside the water inlet pipe 2. A liquid distribution device is provided at one end of the water inlet pipe 2 that extends into the interior of the ammonia removal tower body 1. The liquid distribution device includes a water inlet pipe 3 with several water outlet holes 4. A water outlet pipe 5 is fixedly connected to the bottom of the ammonia removal tower body 1. A heater 6 is fixedly connected inside the bottom of the ammonia removal tower body 1. An air outlet pipe 7 is provided on the ammonia removal tower body 1. The air outlet pipe 7 is in the form of a coil. A rotary motor 9 is provided on the ammonia removal tower body 1. A bidirectional lead screw 12 is fixedly connected to the output shaft of the rotary motor 9. The bidirectional lead screw 12 penetrates through the top of the ammonia removal tower body 1 and extends into the interior of the ammonia removal tower body. A stirring rod 10 is bolted to the bidirectional lead screw 12. Several stirring blades 11 are provided on the stirring rod 10.

[0021] The implementation method of this embodiment is as follows: When it is necessary to treat the ammonia removal of semi-coke wastewater, the wastewater is first introduced into the inlet pipe 2, passes through the filter screen 8 in the inlet pipe 2, and then enters the inlet water pipe 3 connected to the inlet pipe 2. Then it is discharged from the outlet hole 4 on the inlet water pipe 3. Then the rotary motor 9 and the heater 6 below the ammonia removal tower 1 are turned on. The heater 6 heats the wastewater in the ammonia removal tower 1. At the same time, the bidirectional screw 12 on the rotary motor 9 rotates, which drives the stirring rod 10 and stirring blade 11 on the bidirectional screw 12 to move up and down and rotate, so as to separate the ammonia in the wastewater. Then the separated ammonia enters the desulfurization device through the gas outlet pipe 7. Finally, the treated wastewater is discharged through the outlet pipe 5.

[0022] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A wastewater treatment and ammonia removal device for semi-coke production, characterized in that, The system includes a deammoniation tower body (1), with a water inlet pipe (2) fixedly connected to the top of the deammoniation tower body (1). A liquid distribution device is provided on one end of the water inlet pipe (2) that extends into the interior of the deammoniation tower body (1). The liquid distribution device includes a water inlet pipe (3) with several water outlet holes (4). A water outlet pipe (5) is fixedly connected to the bottom of the deammoniation tower body (1). A heater (6) is fixedly connected to the interior of the deammoniation tower body (1). An air outlet pipe (7) is provided on the deammoniation tower body (1).

2. The ammonia removal device for wastewater treatment in semi-coke production according to claim 1, characterized in that, The water inlet pipe (2) is equipped with a filter screen (8).

3. The ammonia removal device for wastewater treatment in semi-coke production according to claim 1, characterized in that, The deammonia removal tower body (1) is equipped with a rotary motor (9), and a stirring rod (10) is fixedly connected to the rotary motor (9). The stirring rod (10) penetrates the deammonia removal tower body (1) and extends into the interior of the deammonia removal tower body (1). The stirring rod (10) is equipped with several stirring blades (11).

4. The ammonia removal device for wastewater treatment in semi-coke production according to claim 3, characterized in that, A bidirectional lead screw (12) is fixedly connected to the output shaft of the rotary motor (9). The bidirectional lead screw (12) passes through the stirring rod (10), and the stirring rod (10) and the bidirectional lead screw (12) are bolted together.

5. The ammonia removal device for wastewater treatment in semi-coke production according to claim 1, characterized in that, The air outlet pipe (7) is in the form of a coil.

6. The ammonia removal device for wastewater treatment in semi-coke production according to claim 1, characterized in that, The bottom of the deammoniation tower body (1) is provided with a support column (13).

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