CN211345293U

CN211345293U - Central distributed methanol heating device

Info

Publication number: CN211345293U
Application number: CN201922152154.3U
Authority: CN
Inventors: 李俊鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-08-25
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a central distributed methanol heating device, wherein a sealing head is connected at the lower end of a shell, a lower mesh plate is isolated between the sealing head and the shell, a sealing plate is connected at the upper end of the shell, an upper mesh plate is isolated between the sealing plate and the shell, a central tube is positioned on the central axis in the shell and is coaxial with the shell, an air inlet tube communicated with the central tube is arranged on the shell, an air outlet tube is arranged on the sealing plate, and a formaldehyde heating catalyst is filled in the shell; because the end socket and the central tube are adopted, the mixed gas enters the end socket through the central tube, collides with the wall and rebounds to contact with the catalyst more uniformly to react and heat, the distribution problem of the mixed gas is effectively solved, the balanced and stable reaction is favorably carried out, meanwhile, the subsequent mixed gas can be heated and gasified, and the reaction speed of the catalyst is favorably improved; and the catalyst filling space is enlarged, the reaction heating capacity and power are increased, the penetration resistance of mixed gas is also reduced, the reaction heat can be taken away quickly, the possibility of explosion is reduced, and the method is safer and more efficient.

Description

Central distributed methanol heating device

Technical Field

The utility model relates to a methyl alcohol heats the reaction unit field, what especially relate to is a central distributing type methyl alcohol heating apparatus.

Background

The existing methanol heating reaction device generally utilizes a methanol burner to directly burn media (water, oil, air and the like) in a boiler, and the media flow to transfer heat out; a plurality of tubes are arranged in a heating main body device, catalysts are filled in the tubes, the bottom of the device is provided with methanol and air inlets which can be led to the tubes and react with the tubes to generate heat, and then the heat of the tubes is taken away and utilized through media (water, oil, air and the like); generally, the temperature and flow of the tail gas after reaction are controlled to prevent the loss of heat energy generated by the reaction.

However, the existing methanol heating reaction device has the disadvantages of insufficient combustion and large consumption due to direct combustion of methanol, and tail gas contains harmful gases such as carbon monoxide and formaldehyde, which harm the environment and human body; and the structure is complicated, the manufacturing cost is high, and the market competition is not facilitated.

Moreover, the existing methanol heating reaction device is internally provided with a tube array, is limited by the tube diameter, is limited by the filled catalyst, influences the heating power of the device and is difficult to manufacture large-scale equipment; and air and methanol must pass through the tube nest and catalyst reaction, limited by the pipe diameter, the pressure in the tube is very high, must raise the power of the transfer pump, this is unfavorable for energy-conservation of the apparatus, the high pressure still causes methanol to have not reacted and has already escaped easily, thus cause the safety accident.

Meanwhile, in order to maintain the safety of the tail gas, the flow rate and the temperature of the tail gas are controlled to be not high, the amount of the methanol and the amount of the air which enter the tail gas are limited, the too low amount of the air is not beneficial to carrying away the heat generated by the reaction, and the accumulation of the heat is easy to cause the failure of the catalyst and even the explosion of equipment.

Therefore, the existing methanol heating reaction device has very strict requirements on the amount of methanol and air due to unreasonable design, reduces low efficiency, increases risks and is not beneficial to development.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a central distributing type methyl alcohol heating device effectively distributes the mist of methyl alcohol and air to do benefit to the balanced steady of reaction and go on, and safe high-efficient.

The technical scheme of the utility model as follows: a central distributed methanol heating device comprises a shell, a sealing head, a lower mesh plate, a sealing plate, an upper mesh plate and a central pipe; the shell is columnar, the end enclosure is connected to the lower end of the shell, the lower mesh plate is isolated between the end enclosure and the shell, the sealing plate is connected to the upper end of the shell, the upper mesh plate is isolated between the sealing plate and the shell, and the central tube is positioned on the central axis in the shell and is coaxial with the shell; the central position of the lower mesh plate is provided with a through hole matched with the central pipe, and the lower end of the central pipe is connected with the central position of the lower mesh plate; the side wall of the upper part of the shell is provided with an air inlet pipe which extends into the shell and is communicated with the upper end of the central pipe, and the air inlet pipe is used for introducing mixed gas of methanol and air; the space between the upper mesh plate, the shell, the air inlet pipe, the central pipe and the lower mesh plate is filled with a formaldehyde heating catalyst; and the side wall of the sealing plate is provided with an air outlet pipe communicated with the inner space of the sealing plate and used for discharging high-temperature gas after the contact reaction of the mixed gas and the methanol heating catalyst.

The central distributed methanol heating device comprises: the joint between the upper end of the central pipe and the air inlet pipe adopts a bent pipe for smooth transition.

The central distributed methanol heating device comprises: the shell is made of round tubes or square tubes.

The central distributed methanol heating device comprises: and the outer side wall of the shell is wrapped with a heat insulation material layer.

The central distributed methanol heating device comprises: the seal head is a cylinder or a hemisphere.

The central distributed methanol heating device comprises: the sealing plate is a cylinder or a hemisphere.

The central distributed methanol heating device comprises: the central tube is made of a round tube or a square tube.

The central distributed methanol heating device comprises: the air inlet pipe is communicated with one end of an air inlet pipeline, and the other end of the air inlet pipeline is connected with an air blower; and a feeding pipeline is communicated with the air inlet pipeline, and the other end of the feeding pipeline is connected with a methanol pump.

The utility model provides a central distributed methanol heating device, owing to adopted head and center tube, the mist gets into the head through the center tube and collides the wall bounce-back and then contacts catalyst reaction more evenly and heats, has effectively solved the distribution problem of mist, is favorable to the equilibrium of reaction to go on, and subsequent mist can also be heated and gasified simultaneously, is favorable to promoting the reaction rate of catalyst; and the catalyst filling space is enlarged, the reaction heating capacity and power are increased, the penetration resistance of mixed gas is also reduced, the reaction heat is favorably and quickly taken away, the possibility of explosion is reduced, and the method is safer and more efficient.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a central distributed methanol heating apparatus according to the present invention;

summary of the numbers in the figures: the device comprises a shell 110, a methanol heating catalyst 111, a lower mesh plate 113, an upper mesh plate 114, a central pipe 120, an air inlet pipe 121, an elbow 122, a seal head 130, a seal plate 140, an air outlet pipe 141, a blower 200, an air inlet pipeline 210, a methanol pump 300 and a feeding pipeline 310.

Detailed Description

The following detailed description and examples of the present invention are provided in connection with the accompanying drawings, which are set forth for the purpose of illustration only and are not intended to limit the invention.

As shown in fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the central distributed methanol heating apparatus of the present invention, which is dedicated to heating methanol, and includes a housing 110, a head 130, a lower mesh plate 113, a closing plate 140, an upper mesh plate 114, and a central pipe 120; the housing 110 is cylindrical and can be made of a hollow metal straight pipe with a larger diameter; the end socket 130 is connected to the lower end of the shell 110, the lower mesh plate 113 is isolated between the end socket 130 and the shell 110, specifically, a flange plate is welded at the upper port of the end socket 130 and a flange plate is welded at the lower port of the shell 110, and the lower mesh plate 113 is welded on the flange plate at the lower port of the shell 110 before the two flange plates are connected by bolts; the sealing plate 140 is connected to the upper end of the housing 110, and the upper mesh plate 114 is isolated between the sealing plate 140 and the housing 110, specifically, by welding a flange plate at the lower port of the sealing plate 140 and a flange plate at the upper port of the housing 110, and clamping the upper mesh plate 114 between the two flange plates before connecting the two flange plates by bolts; the central tube 120 is positioned on the central axis inside the shell 110, is coaxially arranged with the shell 110, and can be made of a hollow metal straight tube with a smaller diameter; a through hole matched with the pipe diameter of the central pipe 120 is formed in the center of the lower mesh plate 113, and is used for welding the lower end of the central pipe 120 to the center of the lower mesh plate 113; an air inlet pipe 121 which extends into the shell 110 and is communicated with the upper end of the central pipe 120 is transversely arranged on the side wall of the upper part of the shell 110 and is used for introducing mixed gas of methanol and air, and the air inlet pipe 121 and the central pipe 120 are in an inverted L shape; the space between the upper mesh plate 114, the shell 110, the air inlet pipe 121, the central pipe 120 and the lower mesh plate 113 is filled with the formaldehyde heating catalyst 111, the aperture of the upper mesh plate 114 and the aperture of the lower mesh plate 113 is preferably not leaked with the formaldehyde heating catalyst 111, otherwise, a screen with smaller aperture is required to be added for blocking; the side wall of the sealing plate 140 is provided with an air outlet pipe 141 communicated with the inner space thereof for discharging high-temperature gas after the contact reaction of the mixed gas and the methanol heating catalyst 111, and the generated high-temperature gas can be directly connected to a heat-using place or a heat exchange device for heating other media and then used.

Mixed gas of methanol and air enters the end socket 130 from the air inlet pipe 121 through the central pipe 120, and is more uniformly contacted with the formaldehyde heating catalyst 111 for reaction and heating after colliding with the wall in the end socket 130 for rebound, so that the problem of distribution of the mixed gas is effectively solved, and the balanced and stable reaction is facilitated; meanwhile, as the reaction proceeds, the temperature inside the housing 11 also gradually rises, and the subsequent mixed gas can be further heated and gasified in the process of passing through the central tube 120, which not only can enhance the gas pressure of the mixed gas to enhance the penetrating power of the mixed gas on the formaldehyde heating catalyst 111, but also is beneficial to increasing the reaction speed of the formaldehyde heating catalyst 111.

Moreover, because only one central tube 120 is adopted in the shell 110, most of the space in the shell 110 can be filled with the formaldehyde heating catalyst 111, so that the filling amount of the formaldehyde heating catalyst 111 is greatly increased, and the reaction heating capacity and the power can be increased by more than three times; and the increased filling space also reduces the penetration resistance of the mixed gas, and is beneficial to quickly taking away the reaction heat, thereby greatly reducing the possibility of explosion of the device and having higher safety.

In the preferred embodiment of the central distributed methanol heating apparatus of the present invention, it is preferable that the connecting portion between the upper end of the central tube 120 and the intake tube 121 is a bent tube 122 with smooth transition, and the bent tube 122 can further reduce the flow velocity loss of the mixed gas for the right-angle connecting pipeline.

In the preferred embodiment of the central distributed methanol heating apparatus of the present invention, in terms of the shape selection of the main components, specifically, the casing 110 is preferably made of a circular tube or a square tube; the end socket 130 is preferably a cylinder or a hemisphere; the closing plate 140 is preferably a cylinder or a hemisphere; the center tube 120 is preferably made of a circular tube or a square tube.

Preferably, the outer side walls of the housing 110, the sealing head 130 and the sealing plate 140, except for the inlet pipe 121 and the outlet pipe 141, are wrapped with a layer of heat insulating material to insulate the device.

In addition, as shown in fig. 1, in the embodiment of the central distributed methanol heating apparatus of the present invention, the air inlet pipe 121 is communicated with one end of an air inlet pipe 210, and the other end of the air inlet pipe 210 is connected to an air blower or a fan 200 for pumping air mixed formaldehyde into the air inlet pipe 121; and a feeding pipeline 310 is communicated with the air inlet pipeline 210, and the other end of the feeding pipeline 310 is connected with a methanol pump 300 for pumping atomized or gasified formaldehyde into the air inlet pipeline 210.

The utility model discloses a central distributing type methyl alcohol heating device is guaranteeing that the reaction is complete, methyl alcohol is by fully decomposing exothermic condition under, has increaseed the flow and the velocity of flow of mixed air, can take away the heat energy that the reaction produced rapidly, and is safe high-efficient, and high temperature, large-traffic tail gas have still promoted the range of application.

It should be understood that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and those skilled in the art can add, subtract, replace, change or modify the above-mentioned embodiments within the spirit and principle of the present invention, and all such additions, substitutions, changes or modifications should fall within the scope of the appended claims.

Claims

1. A central distributed methanol heating device is characterized by comprising a shell, a seal head, a lower mesh plate, a seal plate, an upper mesh plate and a central pipe; the shell is columnar, the end enclosure is connected to the lower end of the shell, the lower mesh plate is isolated between the end enclosure and the shell, the sealing plate is connected to the upper end of the shell, the upper mesh plate is isolated between the sealing plate and the shell, and the central tube is positioned on the central axis in the shell and is coaxial with the shell; the central position of the lower mesh plate is provided with a through hole matched with the central pipe, and the lower end of the central pipe is connected with the central position of the lower mesh plate; the side wall of the upper part of the shell is provided with an air inlet pipe which extends into the shell and is communicated with the upper end of the central pipe, and the air inlet pipe is used for introducing mixed gas of methanol and air; the space between the upper mesh plate, the shell, the air inlet pipe, the central pipe and the lower mesh plate is filled with a formaldehyde heating catalyst; and the side wall of the sealing plate is provided with an air outlet pipe communicated with the inner space of the sealing plate and used for discharging high-temperature gas after the contact reaction of the mixed gas and the methanol heating catalyst.

2. The central distributed methanol heating apparatus according to claim 1, characterized in that: the joint between the upper end of the central pipe and the air inlet pipe adopts a bent pipe for smooth transition.

3. The central distributed methanol heating apparatus according to claim 1, characterized in that: the shell is made of round tubes or square tubes.

4. The central distributed methanol heating apparatus according to claim 1, characterized in that: and the outer side wall of the shell is wrapped with a heat insulation material layer.

5. The central distributed methanol heating apparatus according to claim 1, characterized in that: the seal head is a cylinder or a hemisphere.

6. The central distributed methanol heating apparatus according to claim 1, characterized in that: the sealing plate is a cylinder or a hemisphere.

7. The central distributed methanol heating apparatus according to claim 1, characterized in that: the central tube is made of a round tube or a square tube.

8. The central distributed methanol heating apparatus according to claim 1, characterized in that: the air inlet pipe is communicated with one end of an air inlet pipeline, and the other end of the air inlet pipeline is connected with an air blower; and a feeding pipeline is communicated with the air inlet pipeline, and the other end of the feeding pipeline is connected with a methanol pump.