CN213651846U

CN213651846U - Ammonia decomposition air inlet structure with bypass increased

Info

Publication number: CN213651846U
Application number: CN202021649767.4U
Authority: CN
Inventors: 刘道财; 刘明; 马海星; 周晓玮
Original assignee: Shaoxing Jicun Machinery Technology Co ltd
Current assignee: Shaoxing Jicun Machinery Technology Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-07-09
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses an increase ammonia decomposition inlet structure of bypass, characterized by for decomposing furnace and drying tower bypass, including the bypass pipe with be located the bypass valve on the bypass pipe, the inlet pipe of the one end intercommunication drying tower of bypass pipe, the discharging pipe of the other end intercommunication drying tower of bypass pipe is equipped with first control valve on the inlet pipe between bypass pipe and drying tower, is equipped with the second control valve on the discharging pipe between bypass pipe and drying tower. The utility model has the advantages that can realize not shutting down the maintenance when ammonia decomposes the drying tower and damages through the setting of bypass pipe and bypass valve, if the drying tower is bad suddenly, can open the bypass, the decomposing furnace is worked as usual, is unlikely to equipment and maintains the drying tower alone after shutting down, causes the mill to stop production, can reduce the loss of enterprises.

Description

Ammonia decomposition air inlet structure with bypass increased

Technical Field

The utility model belongs to the technical field of ammonia decomposition equipment, specifically an increase ammonia decomposition inlet structure of bypass.

Background

The ammonia decomposition equipment generally comprises a decomposition furnace for decomposing liquid ammonia into hydrogen gas and nitrogen gas, and a drying tower for adsorbing impurities in the hydrogen gas and nitrogen gas to purify the gas.

For example, chinese patent document, granted publication No. CN204607579U, on 2.9.2015, discloses a utility model named "an ammonia decomposition gas generator", which includes a frame mounted on a movable chassis, and is characterized in that: the ammonia drying device comprises a rack, and is characterized in that an ammonia storage tank, a decomposing furnace and a drying tower are fixed on the rack, the ammonia storage tank, the decomposing furnace and the drying tower are connected through stainless steel pipelines, a static mixed water cooler and a vaporizer are further arranged on the rack, the vaporizer is connected with the ammonia storage tank through a stainless steel pipeline, liquid ammonia is converted into ammonia through the vaporizer, and a double-sealing structure is arranged on a liquid inlet of the vaporizer. It has the following disadvantages: the decomposing furnace is directly connected with the drying tower, when the drying tower is damaged, the whole equipment is required to be stopped, the production of a factory is stopped, and the enterprise loss is too high.

Disclosure of Invention

Based on the problem, the utility model provides an increase ammonia decomposition inlet structure of bypass can realize not shutting down the maintenance when ammonia decomposes the damage of drying tower, is unlikely to equipment and shuts down back independent maintenance drying tower, causes the mill to shut down production, can reduce the loss of enterprise.

In order to realize the utility model purpose, the utility model adopts the following technical scheme:

the utility model provides an increase ammonia decomposition inlet structure of bypass, characterized by for decomposing furnace and drying tower bypass, include the bypass pipe and be located the bypass valve on the bypass pipe, the inlet pipe of one end intercommunication drying tower of bypass pipe, the discharging pipe of the other end intercommunication drying tower of bypass pipe, be equipped with first control valve on the inlet pipe between bypass pipe and drying tower, be equipped with the second control valve on the discharging pipe between bypass pipe and drying tower. The setting through bypass pipe and bypass valve can realize not shutting down the maintenance when ammonia decomposes the drying tower and damages, if the drying tower is bad suddenly, can open the bypass, the decomposing furnace works as usual, is unlikely to equipment and maintains the drying tower alone after shutting down, causes the mill to shut down, can reduce the loss of enterprises.

Preferably, the by-pass line is connected to the feed line by a three-way connection. The connection of the bypass pipe and the feeding pipe is convenient.

Preferably, the three-way joint is a three-way threaded joint. Through the one end process of connecting on the inlet pipe be not through the gas of drying process, can cause impact and corruption to joint department, compare the junction of discharging pipe one end and need faster and more convenient maintenance, consequently, preferred adoption tee bend screwed joint, through the screw thread change, convenient follow-up maintenance.

Preferably, the bypass pipe is connected to the discharge pipe by a tee pipe in a welding manner. One end of the bypass pipe connected with the discharge pipe is less in erosion and long in service life, so that the bypass pipe can be directly communicated in a welding mode, and the sealing effect is reliable.

Preferably, a needle valve is used as the bypass valve. The rotation is controlled, convenient operation.

Preferably, the first control valve is a ball valve. The first control valve is kept in a normally open state when the device works, the sealing surface and the spherical surface of the ball valve are always in a closed state, the ball valve is not easy to erode by a medium, the switch is light and convenient, the size is small, the ball valve can be made into a large caliber, the sealing is reliable, the structure is simple, and the maintenance is convenient.

Preferably, the diameter of the by-pass pipe is equal to both the diameter of the inlet pipe at the junction of the by-pass pipes and the diameter of the outlet pipe at the junction of the by-pass pipes. The stable flow of gas is facilitated, pressure drop and pressure rise in the pipeline joint are prevented, and the stability is improved.

To sum up, the beneficial effects of the utility model are that: the bypass pipe and the bypass valve are arranged, so that maintenance without shutdown can be realized when the ammonia decomposition drying tower is damaged, if the drying tower is damaged suddenly, the bypass can be opened, the decomposition furnace can work normally, the phenomenon that the drying tower is maintained independently after equipment is shut down, a factory is stopped, and enterprise loss can be reduced; the sealing device is stable and convenient to control, beneficial to operation, reliable in sealing effect, simple in structure, small in change of equipment, capable of being directly changed and applied in the prior art and wide in application range.

Drawings

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

Wherein: three-way pipe 1 by-pass pipe 2 by-pass valve 3 three-way joint 4 feed pipe 5 first control valve 6 second control valve 7 discharge pipe 8 drying tower 9.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

In the embodiment of the method, the first step,

as shown in figure 1, the ammonia decomposition air inlet structure for increasing the bypass is characterized in that the ammonia decomposition air inlet structure is used for bypassing a decomposition furnace and a drying tower 9 and comprises a bypass pipe 2 and a bypass valve 3 positioned on the bypass pipe 2, wherein the bypass valve 3 adopts a needle valve. One end of the bypass pipe 2 is communicated with the feeding pipe 5 of the drying tower 9, the other end of the bypass pipe 2 is communicated with the discharging pipe 5 of the drying tower 9, and specifically, the bypass pipe 2 is connected to the feeding pipe 5 through the three-way joint 4. The three-way joint 4 adopts a three-way threaded joint. The bypass pipe 2 is connected to the discharge pipe 8 through the three-way pipe 1 in a welding manner. The diameter of the by-pass pipe 2 is equal to the diameter of the feeding pipe 5 at the connection of the by-pass pipe and the diameter of the discharging pipe 8 at the connection of the by-pass pipe. A first control valve 6 is arranged on the feeding pipe 5 between the bypass pipe 2 and the drying tower 9, and the first control valve 6 adopts a ball valve. A second control valve 7 is arranged on the discharge pipe 8 between the bypass pipe 2 and the drying tower 9.

When the drying tower 9 is normally used, the first control valve 6 and the second control valve 7 are kept in a normally open state, the bypass valve 3 is closed, if the drying tower 9 is suddenly broken, the bypass valve 3 can be opened, the first control valve 6 and the second control valve 7 are closed, and the decomposing furnace works normally, so that as a preparation scheme, the shutdown maintenance can be realized when the ammonia decomposing and drying tower is damaged by arranging the bypass pipe 2 and the bypass valve 3, the drying tower is not separately maintained after equipment is shut down, the production stop of a factory is caused, and the enterprise loss can be reduced; the sealing device is stable and convenient to control, beneficial to operation, reliable in sealing effect, simple in structure, small in change of equipment, capable of being directly changed and applied in the prior art and wide in application range.

It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner of practicing the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.

Claims

1. An ammonia decomposition air inlet structure for increasing bypass is characterized by being used for bypass of a decomposition furnace and a drying tower and comprising a bypass pipe and a bypass valve positioned on the bypass pipe, wherein one end of the bypass pipe is communicated with a feeding pipe of the drying tower, the other end of the bypass pipe is communicated with a discharging pipe of the drying tower, a first control valve is arranged on the feeding pipe between the bypass pipe and the drying tower, and a second control valve is arranged on the discharging pipe between the bypass pipe and the drying tower; the bypass pipe is connected to the feeding pipe through a three-way joint, and the bypass pipe is connected to the discharging pipe through a three-way pipe in a welding mode.

2. The ammonia decomposition gas intake structure with increased bypass according to claim 1, wherein the three-way joint is a three-way threaded joint.

3. The ammonia decomposition intake structure with increased bypass according to claim 1, wherein the bypass valve is a needle valve.

4. The ammonia decomposition inlet gas structure with increased bypass according to claim 1, wherein the first control valve is a ball valve.

5. The ammonia decomposition gas inlet structure for increasing the bypass according to claim 1, wherein the diameter of the bypass pipe is equal to the diameter of the inlet pipe at the connection of the bypass pipe and the diameter of the outlet pipe at the connection of the bypass pipe.