CN218764664U

CN218764664U - Ammonia water evaporator steam backwater cooling device

Info

Publication number: CN218764664U
Application number: CN202223105385.7U
Authority: CN
Inventors: 李振宇; 刘国伟; 孙仁财; 杨鹏远; 刘天武; 程志宏
Original assignee: Shougang Changzhi Iron and Steel Co Ltd
Current assignee: Shougang Changzhi Iron and Steel Co Ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-03-28
Anticipated expiration: 2032-11-22

Abstract

The utility model relates to a vapor backwater cooling device of an ammonia evaporator, which comprises a shell, an air inlet pipe, a water outlet pipe and a cooling pipe; two ends of the shell are respectively connected with the air inlet pipe and the water outlet pipe; a plurality of guide plates are fixed at one end of the inner wall of the shell, which is close to the air inlet pipe; the guide plates are obliquely arranged and face one end of the shell away from the air inlet pipe; the cooling pipe is arranged on one side of the shell; one end of the cooling pipe is connected with a pressure pump; the cooling pipe is connected with a plurality of cooling branch pipes; the cooling branch pipes are respectively inserted into the shell and connected with the shell; one end of each cooling branch pipe in the shell is connected with a spraying pipeline; the spraying pipeline is in an elliptical ring shape, and the inner side of the spraying pipeline is connected with a plurality of spray heads; the plurality of spray heads face the inner diameter of the spray pipeline. The utility model discloses a guide plate is with the middle part of steam water conservancy diversion to the casing, and the spray pipe way surrounds the steam after with the water conservancy diversion, and the shower nozzle is with the cooling water blowout, quick liquefied steam, and steam cooling effect is good, simple structure, convenient operation.

Description

Vapor backwater cooling device of ammonia water evaporator

Technical Field

The utility model belongs to the technical field of, in particular to ammonia water evaporimeter steam return water cooling device.

Background

The SCR denitration reactor of the coking plant adopts an ammonia evaporator to gasify ammonia water, the ammonia evaporator is used as a reducing agent to reduce nitrogen oxide and a catalyst into nitrogen through reaction, the ammonia evaporator generally uses water vapor as a heat source to evaporate the ammonia water, return water of the water vapor needs to be cooled and recovered, a drain valve is generally adopted to cool and discharge the water vapor, but due to structural limitation of the drain valve, the water vapor is not cooled in time, the return water of the water vapor is not smooth, the exhaust amount of the ammonia evaporator is small, the gasification amount of the ammonia water is insufficient, and the denitration effect is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ammonia evaporator steam return water cooling device can cool off steam fast.

In order to achieve the purpose, the technical scheme adopted by the utility model is a vapor return water cooling device of an ammonia water evaporator, which comprises a shell, an air inlet pipe, a water outlet pipe and a cooling pipe;

the two ends of the shell are respectively connected with the air inlet pipe and the water outlet pipe; a plurality of guide plates are fixed at one end of the inner wall of the shell, which is close to the air inlet pipe; the guide plates are obliquely arranged and face one end of the shell away from the air inlet pipe;

the cooling pipe is arranged on one side of the shell; one end of the cooling pipe is connected with a pressure pump; the cooling pipe is connected with a plurality of cooling branch pipes; the cooling branch pipes are respectively inserted into the shell and connected with the shell; one end of each cooling branch pipe in the shell is connected with a spraying pipeline; the spraying pipeline is in an elliptical ring shape, and the inner side of the spraying pipeline is connected with a plurality of spray heads; the plurality of spray heads face the inner diameter of the spray pipeline.

Preferably, a reducer section is arranged at one end of the shell connected with the air inlet pipe; the reducing section is funnel-shaped; the guide plate is fixed in the reducing section.

Preferably, the baffle is arc-shaped.

Preferably, a distribution grid is arranged between the guide plate and the spraying pipeline close to the air inlet pipe; the distribution grid is vertically fixed on the inner wall of the shell.

Preferably, each cooling branch pipe is provided with a regulating valve.

Preferably, the spray head is an atomizing spray head.

The utility model relates to an ammonia water evaporimeter steam return water cooling device compares with prior art and has following advantage:

(1) The steam is guided to the middle part of the shell through the guide plate, the guided steam is surrounded by the spraying pipeline, and the cooling water is sprayed out by the spray head to exchange heat with the steam, so that the steam is liquefied quickly;

(2) The steam is uniformly distributed in the shell through the distribution grids, so that the phenomenon that the steam is concentrated after being guided is avoided, and the liquefaction effect is weakened;

(3) The design is simple, easy to use, and low in manufacturing cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in the figure, the vapor backwater cooling device of the ammonia water evaporator comprises a shell 1, an air inlet pipe 2, a water outlet pipe 3 and a cooling pipe 4;

two ends of the shell 1 are respectively connected with an air inlet pipe 2 and a water outlet pipe 3; a plurality of guide plates 11 are fixed at one end of the inner wall of the shell 1 close to the air inlet pipe 2; the guide plates 11 are obliquely arranged and face one end of the shell 1 far away from the air inlet pipe 2, steam enters the shell 1 from the air inlet pipe 2 and is guided to the middle of the shell 1 through the guide plates 11;

the cooling pipe 4 is arranged on one side of the shell 1; one end of the cooling pipe 4 is connected with a pressure pump 41, the pressure pump 41 is connected with an outside water source, and cooling water is supplied to the cooling pipe 4 through the pressure pump 41; a plurality of cooling branch pipes 42 are connected to the cooling pipe 4; a plurality of cooling branch pipes 42 are respectively inserted into the shell 1 and connected with the shell 1; one end of each cooling branch pipe 42 in the shell 1 is connected with a spraying pipeline 43; the spraying pipeline 43 is in an elliptical ring shape, and the inner side of the spraying pipeline 43 is connected with a plurality of spray heads 44; the plurality of spray heads 44 face the inner diameter of the spray pipeline 43, the spray pipeline 43 surrounds the guided steam, cooling water is introduced into the spray pipeline 43 through the plurality of cooling branch pipes 42, the spray heads 44 of the spray pipeline 43 spray the cooling water to exchange heat with the steam, the steam is liquefied to form liquid phase water, and the liquid phase water falls to the bottom of the inner wall of the shell 1 and is discharged from the water outlet pipe 3 to be recycled.

In this embodiment, a reducer section 12 is arranged at one end of the casing 1 connected with the air inlet pipe 2; the reducing section 12 is funnel-shaped; the guide plate 11 is fixed in the reducing section 12, steam is guided conveniently through the reducing section 12, the length of the guide plate 11 is reduced, and steam is guided to the middle of the shell 1.

In this embodiment, the guide plate 11 is arc-shaped, so as to guide steam conveniently.

In this embodiment, a distribution grid 13 is arranged between the guide plate 11 and the spraying pipeline 43 close to the air inlet pipe 2; the distribution grid 13 is vertically fixed on the inner wall of the shell 1, and the steam is uniformly distributed in the shell 1 through the distribution grid 13, so that the concentration of the steam after the steam is guided is avoided, and the liquefaction effect is weakened.

In this embodiment, each of the cooling branches 42 is provided with an adjusting valve 421, and the flow rate and the opening and closing of the cooling branch 42 are controlled by the adjusting valve 421 according to the steam amount.

In this embodiment, the spray head 44 is an atomizing spray head, and a water mist wall is formed by spraying through the atomizing spray head, so that heat exchange with steam is facilitated.

The utility model discloses application method: the booster pump 41 is started, cooling water flows into the cooling pipe 4 from the booster pump 41, the cooling branch pipe 42 divides the cooling water, the regulating valve 421 is started, the cooling water flows into the spraying pipeline 43, a water mist wall is formed by spraying from the atomizing nozzle, meanwhile, steam is introduced into the air inlet pipe 2, the steam enters the reducing section 12, after being guided by the guide plate 11 in the reducing section 12, the steam passes through the distribution grid 13 and then enters the spraying pipeline 43 to be in contact with the water mist wall for heat exchange to become liquid-phase water, and the liquid-phase water falls to the bottom of the inner wall of the shell 1 and is discharged from the water outlet pipe 3.

Claims

1. A cooling device for returning vapor water of an ammonia water evaporator is characterized by comprising a shell (1), an air inlet pipe (2), a water outlet pipe (3) and a cooling pipe (4);

two ends of the shell (1) are respectively connected with the air inlet pipe (2) and the water outlet pipe (3); a plurality of guide plates (11) are fixed at one end of the inner wall of the shell (1) close to the air inlet pipe (2); the guide plates (11) are obliquely arranged and face one end of the shell (1) far away from the air inlet pipe (2);

the cooling pipe (4) is arranged on one side of the shell (1); one end of the cooling pipe is connected with a pressure pump (41); a plurality of cooling branch pipes (42) are connected to the cooling pipe (4); the cooling branch pipes (42) are respectively inserted into the shell (1) and connected with the shell (1); one end of each cooling branch pipe in the shell (1) is connected with a spraying pipeline (43); the spraying pipeline (43) is in an elliptical ring shape, and the inner side of the spraying pipeline (43) is connected with a plurality of spray heads (44); the plurality of spray heads (44) face the inner diameter of the spray pipeline (43).

2. The ammonia water evaporator steam backwater cooling device as claimed in claim 1, characterized in that one end of the shell (1) connected with the air inlet pipe (2) is provided with a reducing section (12); the reducing section (12) is funnel-shaped; the guide plate (11) is fixed in the reducing section (12).

3. The ammonia water evaporator steam backwater cooling device as claimed in claim 1 or 2, characterized in that the guide plate (11) is arc-shaped.

4. The ammonia water evaporator steam backwater cooling device as claimed in claim 1, characterized in that a distribution grid (13) is arranged between the guide plate (11) and a spraying pipeline (43) close to the air inlet pipe (2); the distribution grid (13) is vertically fixed on the inner wall of the shell (1).

5. The ammonia evaporator steam backwater cooling device as claimed in claim 1, characterized in that each cooling branch pipe (42) is provided with a regulating valve (421).

6. The ammonia water evaporator vapor return water cooling device as claimed in claim 1, wherein the spray head (44) is an atomizing spray head.