CN217579019U - Bell-type furnace gas supply device for tail gas recovery - Google Patents
Bell-type furnace gas supply device for tail gas recovery Download PDFInfo
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- CN217579019U CN217579019U CN202220642920.3U CN202220642920U CN217579019U CN 217579019 U CN217579019 U CN 217579019U CN 202220642920 U CN202220642920 U CN 202220642920U CN 217579019 U CN217579019 U CN 217579019U
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Abstract
The utility model discloses a bell-type furnace air feeder of tail gas recovery belongs to bell-type furnace air feed technical field. The utility model comprises a bell-type furnace, wherein the input end of the bell-type furnace is connected with a hydrogen branch pipeline, a hydrogen recovery pipeline is connected on the pipeline of the hydrogen branch pipeline, and a hydrogen recovery pipeline stop valve, a valve front pressure constant pressure regulating valve and a check valve are sequentially arranged along the pipeline of the hydrogen recovery pipeline; the pipeline line of the hydrogen branch pipeline is sequentially provided with a hydrogen branch pipeline stop valve and a valve rear pressure constant pressure regulating valve. The utility model discloses simple structure, the technique is novel, safe and reliable, it is very simple and convenient to operate, takes the invariable regulation of pressure before the valve, passes through hydrogen branch pipe with the hydrogen of tail gas recovery and supplies with the bell-type furnace, takes the invariable regulation of pressure behind the valve, passes through hydrogen branch pipe with the hydrogen of outside hydrogen trunk line and supplyes the bell-type furnace to ensure the gaseous safe and reliable supply of effective utilization and bell-type furnace protection of tail gas recovery hydrogen.
Description
Technical Field
The utility model relates to a bell-type furnace air feed technical field, more specifically say, relate to a bell-type furnace air feeder of tail gas recovery.
Background
The bell-type furnace is generally applied to the metallurgical industry and is used for cooling silicon steel sheets and the likeKey equipment for heat treatment of rolled products. The bell-type furnace is provided with two layers of a heating cover and a protective cover, the strip steel is sealed in the protective cover, protective gas is filled in the protective cover, the strip steel is heated and annealed in the protective gas, oxidation and decarburization are not generated, the surface of the annealed strip steel is bright, the work hardening is eliminated, the required structure and performance are obtained, and necessary conditions are provided for subsequent processing. Since hydrogen has the advantages of good thermal conductivity, low density, low dynamic viscosity, strong reducibility, etc., hydrogen is generally selected as a protective gas for a bell-type furnace. The protective gas is changed into tail gas after being used, the main component of the tail gas is hydrogen, but the tail gas contains a large amount of impurities such as nitrogen, dust, vaporous oil particles, carbon deposit, water, oxygen and the like, the existence of the impurities causes the tail gas not to be directly recycled, but to be discharged into the atmospheric environment, a bell-type furnace production line with the capacity of 80 ten thousand tons can be produced, the annual consumption of 99.99 percent of high-purity hydrogen is about 200 ten thousand m 3 And the direct emission of tail gas not only causes environmental pollution, but also is great energy waste. In order to solve the problems, the metallurgical industry actively carries out research and application of a bell-type furnace tail gas recovery technology, and obtains good effect, the bell-type furnace tail gas is recovered in a centralized manner, oil substances, emulsifying agents, solid particles, liquid water and the like in the tail gas are removed through a pre-processor, then the gas is subjected to purification process treatment such as pressurization, catalytic deoxidation, drying, nitrogen and carbon dioxide gas separation and the like, high-purity hydrogen with the purity of 99.995% can be obtained, the hydrogen recovery rate can reach 80-90%, and the obtained high-purity hydrogen is sent to the bell-type furnace for recycling through the purification process treatment of the tail gas.
Because the hydrogen volume and the pressure that tail gas was retrieved all have certain fluctuation, and the hydrogen volume of retrieving is less than the production demand of bell-type furnace absolutely, obviously, the hydrogen that tail gas was retrieved can't satisfy the normal production demand of bell-type furnace, in the bell-type furnace production system that tail gas was retrieved, must meet the problem of how effectively to utilize the hydrogen of retrieving and how safe and reliable supply of bell-type furnace protective gas.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
An object of the utility model is to overcome prior art's is not enough, provides a bell-type furnace air feeder of tail gas recovery, the utility model discloses simple structure, novel technique, safe and reliable, it is very simple and convenient to operate, take the invariable regulation of pressure before the valve, supply with the hydrogen of tail gas recovery through the hydrogen small transfer line bell-type furnace, take the invariable regulation of pressure behind the valve, supply with the hydrogen of outside hydrogen trunk line through the hydrogen small transfer line bell-type furnace to ensure the effective utilization of tail gas recovery hydrogen, ensure the gaseous safe and reliable supply of bell-type furnace protectiveness simultaneously, and ensured the safe high-efficient production of bell-type furnace of tail gas recovery.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a bell-type furnace gas supply device for tail gas recovery, which comprises a hydrogen main pipeline, a bell-type furnace and a tail gas recovery processing device, wherein the input end of the bell-type furnace is connected with a hydrogen branch pipeline, the pipeline of the hydrogen branch pipeline is connected with a hydrogen recovery pipeline, and the input end of the hydrogen recovery pipeline is connected with the tail gas recovery processing device;
a stop valve of the hydrogen recovery pipeline, a constant pressure regulating valve of the pressure before the valve and a check valve are sequentially arranged along the pipeline of the hydrogen recovery pipeline;
the input end of the hydrogen branch pipeline is connected with a hydrogen main pipeline, and a hydrogen branch pipeline stop valve and a valve rear pressure constant pressure regulating valve are sequentially arranged on the pipeline of the hydrogen branch pipeline along the line.
Furthermore, the hydrogen main pipeline and the tail gas recovery processing device are arranged at the input end of the bell-type furnace in parallel, the tail gas recovery processing device is used as a main gas source of the bell-type furnace, and the hydrogen main pipeline is used as a supplementary gas source of the bell-type furnace.
Furthermore, the stop valve of the recovered hydrogen pipeline, the constant pressure regulating valve of the pressure before the valve and the check valve are sequentially connected in series.
Furthermore, the constant pressure regulating valve for the pressure in front of the valve automatically regulates the relative position of the valve core and the valve seat according to the pressure change of the hydrogen in front of the valve, so that the pressure of the hydrogen in front of the pressure regulating valve cannot be changed due to the change of the amount of the recovered hydrogen, and the effective utilization of the recovered hydrogen in tail gas and the stability of the protective gas pressure of the bell-type furnace are ensured.
Furthermore, the constant pressure regulating valve for the pressure behind the valve sets the pressure regulating parameters of the pressure regulating valve according to the production demand pressure value of the protective gas of the bell-type furnace, and the pressure regulating valve can automatically regulate the relative position of the valve core and the valve seat according to the pressure change of the hydrogen gas behind the valve, so that the pressure of the hydrogen gas behind the pressure regulating valve can not be changed due to the change of the recovered hydrogen gas amount and the hydrogen gas amount for the production and use of the bell-type furnace, and the reliable supplement of the protective gas demand of the bell-type furnace and the stability of the pressure are ensured.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
the utility model discloses simple structure, the technology is novel, safe and reliable, it is very simple and convenient to operate, take the invariable regulation of pressure before the valve, pass through hydrogen by-pass pipe with the hydrogen of tail gas recovery and supply with bell-type furnace, take the invariable regulation of pressure behind the valve, pass through hydrogen by-pass pipe with the hydrogen of outside hydrogen trunk line and supply with bell-type furnace to ensure the effective utilization of tail gas recovery hydrogen, ensure the gaseous safe and reliable supply of bell-type furnace protectiveness simultaneously, and ensured the safe high-efficient production of bell-type furnace of tail gas recovery.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a hydrogen main pipeline; 2. a hydrogen branch pipe stop valve; 3. a post-valve pressure constant pressure regulating valve; 4. a hydrogen branch pipe; 5. a bell-type furnace; 6. a tail gas recovery processing device; 7. a recovery hydrogen pipeline stop valve; 8. a constant pressure regulating valve for the pressure before the valve; 9. a check valve; 10. and a hydrogen pipeline is recovered.
Detailed Description
The invention is further described below with reference to the following figures and examples:
example 1
As can be seen from fig. 1, the bell-type furnace gas supply device for tail gas recovery of the embodiment includes a hydrogen main pipe 1, a bell-type furnace 5 and a tail gas recovery processing device 6, wherein the input end of the bell-type furnace 5 is connected with a hydrogen branch pipe 4, the hydrogen branch pipe 4 is connected with a hydrogen recovery pipe 10 on the pipe, and the input end of the hydrogen recovery pipe 10 is connected with the tail gas recovery processing device 6;
a recovery hydrogen pipeline stop valve 7, a valve front pressure constant pressure regulating valve 8 and a check valve 9 are sequentially arranged on the pipeline line of the recovery hydrogen pipeline 10;
the input end of the hydrogen branch pipeline 4 is connected with a hydrogen main pipeline 1, and a hydrogen branch pipeline stop valve 2 and a valve rear pressure constant pressure regulating valve 3 are sequentially arranged on the pipeline line of the hydrogen branch pipeline 4.
The hydrogen main pipeline 1 and the tail gas recovery processing device 6 are arranged in parallel at the input end of the bell-type furnace 5, the tail gas recovery processing device 6 is used as a main gas source of the bell-type furnace 5, and the hydrogen main pipeline 1 is used as a supplementary gas source of the bell-type furnace 5.
The recovery hydrogen pipeline stop valve 7, the pre-valve pressure constant regulating valve 8 and the check valve 9 are connected in series in sequence.
The constant pressure regulating valve 8 for the pressure in front of the valve automatically regulates the relative position of the valve core and the valve seat according to the pressure change of the hydrogen in front of the valve, so that the pressure of the hydrogen in front of the pressure regulating valve cannot be changed due to the change of the amount of the recovered hydrogen, and the effective utilization of the recovered hydrogen in the tail gas and the stability of the protective gas pressure of the bell-type furnace 5 are ensured.
The constant pressure regulating valve 3 for the pressure behind the valve sets the pressure regulating parameters of the pressure regulating valve according to the production demand pressure value of protective gas of the bell-type furnace 5, the pressure regulating valve can automatically regulate the relative position of a valve core and a valve seat according to the pressure change of hydrogen behind the valve, so that the pressure of the hydrogen behind the pressure regulating valve can not be changed due to the change of the recovered hydrogen amount and the hydrogen amount for the production and use of the bell-type furnace, and the reliable supplement of the protective gas demand of the bell-type furnace and the stability of the pressure are ensured.
A hydrogen branch pipeline 4 connecting the hydrogen main pipeline 1 and the bell-type furnace 5, wherein the hydrogen branch pipeline 4 is sequentially connected with a hydrogen branch pipeline stop valve 2 and a valve rear pressure constant pressure regulating valve 3 in series; a hydrogen recovery pipeline 10 is connected in parallel on a hydrogen branch pipeline 4 between the pressure constant pressure regulating valve 3 at the back of the valve and the bell-type furnace 5, and a check valve 9, a pressure constant pressure regulating valve 8 at the front of the valve, a stop valve 7 of the hydrogen recovery pipeline and a tail gas recovery processing device 6 are sequentially connected in series on the hydrogen recovery pipeline 10.
The high-purity hydrogen recovered by the tail gas recovery processing device 6 is supplied to the bell-type furnace 5 through a recovered hydrogen pipeline stop valve 7, a valve 8 with constant pressure and pressure in front of the valve, a check valve 9 and a hydrogen branch pipeline 4.
The constant pressure regulating valve 8 for the pressure in front of the valve automatically regulates the relative position of the valve core and the valve seat according to the quantity and the pressure change of the high-purity hydrogen recovered by the tail gas recovery processing device 6, and ensures the stability of the pressure of the hydrogen supplied to the bell-type furnace 5.
The hydrogen in the hydrogen main pipeline 1 is supplied to the bell-type furnace 5 through the hydrogen branch pipeline stop valve 2, the constant pressure regulating valve 3 for the pressure behind the valve and the hydrogen branch pipeline 4.
The valve post-valve constant pressure regulating valve 3 automatically regulates the relative position of the valve core and the valve seat according to the change of the recovered hydrogen amount and the hydrogen amount used in the production of the bell-type furnace, and ensures the supplement amount and the pressure stability of the hydrogen of the bell-type furnace 5.
When the bell-type furnace 5 is in production halt for maintenance, the hydrogen branch pipeline stop valve 2 is used for system isolation; when the tail gas recovery processing device 6 is stopped production and overhauled, the recovery hydrogen pipeline stop valve 7 and the check valve 9 are isolated.
The utility model discloses simple structure, the technology is novel, safety and reliability, it is very simple and convenient to operate, take the invariable regulation of pressure before the valve, hydrogen with tail gas recovery passes through hydrogen small transfer line 4 and supplies with bell-type furnace 5, take the invariable regulation of pressure behind the valve, supply with the hydrogen of outside hydrogen trunk line 1 through hydrogen small transfer line 4 and supply with bell-type furnace 5, thereby ensure the effective utilization of tail gas recovery hydrogen, ensure the gaseous safe and reliable supply of 5 protectiveness of bell-type furnace simultaneously, and ensured the 5 safe high-efficient productions of bell-type furnace of tail gas recovery.
The utility model discloses from tail gas recovery processing device 6 go up the hookup all the way and retrieve hydrogen pipeline 10 to hydrogen lateral conduit 4, retrieve and establish ties a stop valve on the hydrogen pipeline 10 in proper order, a formula of relying on oneself air-vent valve, a check valve, the invariable air-vent valve of pressure 8 before the formula of relying on oneself air-vent valve selection valve, the pressure regulating parameter of air-vent valve is set for according to 5 protective gaseous production demand pressure values of bell-type furnace, the air-vent valve can be according to the relative position of hydrogen pressure change automatically regulated case and disk seat before the valve, make the hydrogen pressure before the air-vent valve can not change because of the change of retrieving the hydrogen tolerance, thereby ensure effective utilization of tail gas recovery hydrogen and the stable of bell-type furnace protective gas pressure.
Meanwhile, a branch hydrogen pipeline 4 is connected to the bell-type furnace 5 from an external hydrogen main pipeline 1, a stop valve and a self-operated pressure regulating valve are sequentially connected to the branch hydrogen pipeline 4 in series, the self-operated pressure regulating valve selects a valve rear pressure constant pressure regulating valve 3, pressure regulating parameters of the pressure regulating valve are set according to the production demand pressure value of protective gas of the bell-type furnace 5, the pressure regulating valve can automatically regulate the relative position of a valve core and a valve seat according to the change of the valve rear hydrogen pressure, the change of the hydrogen pressure behind the pressure regulating valve due to the change of the recovered hydrogen quantity and the hydrogen quantity used in the bell-type furnace production can be avoided, and the reliable supplement of the protective gas demand of the bell-type furnace and the stability of the pressure can be ensured.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides a bell-type furnace gas supply unit that tail gas was retrieved, includes hydrogen trunk line (1), bell-type furnace (5) and tail gas recovery processing apparatus (6), its characterized in that: the input end of the bell-type furnace (5) is connected with a hydrogen branch pipeline (4), the pipeline of the hydrogen branch pipeline (4) is connected with a hydrogen recovery pipeline (10), and the input end of the hydrogen recovery pipeline (10) is connected with a tail gas recovery processing device (6);
a recovered hydrogen pipeline stop valve (7), a valve front pressure constant regulating valve (8) and a check valve (9) are sequentially arranged along the pipeline of the recovered hydrogen pipeline (10);
the input of hydrogen lateral conduit (4) be connected with hydrogen trunk line (1), the pipeline of hydrogen lateral conduit (4) is along the line and is set gradually hydrogen lateral conduit stop valve (2) and the invariable air-vent valve of valve back pressure (3).
2. The gas supply device for the hood furnace for recovering the tail gas according to claim 1, characterized in that: the hydrogen main pipeline (1) and the tail gas recovery processing device (6) are arranged in parallel at the input end of the bell-type furnace (5), the tail gas recovery processing device (6) is used as a main gas source of the bell-type furnace (5), and the hydrogen main pipeline (1) is used as a supplementary gas source of the bell-type furnace (5).
3. The bell type furnace gas supply device for tail gas recovery as set forth in claim 1, wherein: the recovery hydrogen pipeline stop valve (7), the constant pressure regulating valve (8) in front of the valve and the check valve (9) are sequentially connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220642920.3U CN217579019U (en) | 2022-03-23 | 2022-03-23 | Bell-type furnace gas supply device for tail gas recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220642920.3U CN217579019U (en) | 2022-03-23 | 2022-03-23 | Bell-type furnace gas supply device for tail gas recovery |
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| Publication Number | Publication Date |
|---|---|
| CN217579019U true CN217579019U (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220642920.3U Active CN217579019U (en) | 2022-03-23 | 2022-03-23 | Bell-type furnace gas supply device for tail gas recovery |
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| Country | Link |
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| CN (1) | CN217579019U (en) |
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- 2022-03-23 CN CN202220642920.3U patent/CN217579019U/en active Active
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