CN217838778U

CN217838778U - Methanol preparation device

Info

Publication number: CN217838778U
Application number: CN202221935664.3U
Authority: CN
Inventors: 陈镇功
Original assignee: Dongying Kelin Chemical Co ltd
Current assignee: Dongying Kelin Chemical Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-18
Anticipated expiration: 2032-07-26

Abstract

The utility model discloses a methanol preparation device, relate to chemical industry equipment technical field, the fuel pulverizer is used for smashing solid fuel, and the discharge gate department of fuel pulverizer connects a conveying mechanism's one end, conveying mechanism is used for carrying the small-grain diameter fuel after fuel pulverizer smashes to the feed inlet department that coal gas took place processing mechanism, coal gas takes place processing mechanism and is used for producing the feed gas to solid fuel gasification, coal gas takes place processing mechanism and is used for providing the feed gas of synthetic methyl alcohol for methyl alcohol synthetic processing mechanism, and methyl alcohol synthetic processing mechanism can derive the liquid methyl alcohol that produces, the gaseous state methyl alcohol that methyl alcohol synthetic processing mechanism produced can let in cold mellow wine tower, cold mellow wine tower can be handled gaseous state methyl alcohol into liquid methyl alcohol and derive, and the unabsorbed gas in the cold mellow wine tower can let in the methyl alcohol synthetic processing mechanism participate in the reaction again. This methanol preparation facilities can improve the methanol recovery rate, and then improves methanol output.

Description

Methanol preparation device

Technical Field

The utility model relates to a chemical industry equipment technical field specifically relates to a methyl alcohol preparation facilities.

Background

Coal and coke are the main solid fuels for producing crude feed gas of methanol. In the preparation process, solid fuel is usually gasified to form coke oven gas, namely, coal and coke are thermally processed by steam and oxygen (or air or oxygen-enriched air) to form solid fuel gasification, the combustible gas obtained by gasification is generally called gas as initial raw material gas for preparing methanol, but during the gasification of the solid fuel, the gasification efficiency is influenced due to large fuel particles, and further the generation of the coke oven gas is influenced, and the yield of the methanol is influenced.

In addition, in the technology of preparing methanol from coke oven gas, methanol not only has a liquid form, but also has a gaseous form, because it is very important and necessary to recover all forms of methanol in order to increase the yield of methanol.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a methanol preparation device to solve the problem that above-mentioned prior art exists, can improve the methyl alcohol rate of recovery, and then improve methyl alcohol output.

In order to achieve the above purpose, the utility model provides a following scheme:

the utility model provides a methanol preparation device, take place processing mechanism, methyl alcohol synthesis processing mechanism and cold mellow wine tower including fuel grinder, coal gas, the fuel grinder is used for smashing solid fuel, just a conveying mechanism's one end is connected to fuel grinder's discharge gate department, conveying mechanism is used for passing through the small-grain diameter fuel after fuel grinder smashes is carried extremely the feed inlet department that coal gas took place processing mechanism, coal gas takes place processing mechanism and is used for producing the feed gas to solid fuel gasification, coal gas takes place processing mechanism be used for doing methyl alcohol synthesis processing mechanism provides the feed gas of synthetic methyl alcohol, just methyl alcohol synthesis processing mechanism can derive the liquid methyl alcohol that produces, the gaseous methyl alcohol that methyl alcohol synthesis processing mechanism produced can let in the cold mellow wine tower, cold mellow wine tower can be handled gaseous methyl alcohol into liquid methyl alcohol and derive, just the unabsorbed gas in the cold mellow wine tower can let in the methyl alcohol synthesis processing mechanism participates in the reaction again.

Preferably, the fuel pulverizer includes a feed hopper, a pulverizing casing, a driving element and a pulverizing element, the pulverizing casing is disposed in an inclined manner, the feed hopper is installed at the upper end of the pulverizing casing and used for feeding solid fuel into the pulverizing casing, the driving element is installed outside the pulverizing casing, the pulverizing element is installed inside the pulverizing casing, the driving element is used for driving the pulverizing element to rotate and enable the pulverizing element to pulverize the solid fuel in the pulverizing casing, the lower end of the pulverizing casing is provided with the discharge port, and the discharge port is located at one end of the conveying mechanism.

Preferably, the driving element is a motor, the crushing element comprises a rotating shaft and a plurality of blades, an output shaft of the motor is coaxially connected with one end of the rotating shaft, the other end of the rotating shaft is rotatably connected with the inner wall of the crushing shell, and the blades are uniformly arranged at different positions of the rotating shaft.

Preferably, the lower extreme of discharge gate is equipped with screening mechanism, screening mechanism is used for right the small-particle size fuel after fuel pulverizer smashes screens, conveying mechanism's one end is located screening mechanism lower extreme, and be used for with the small-particle size fuel of screening mechanism undersize send into in the coal gas takes place processing mechanism, the large-particle size fuel that screening mechanism left can be sent back to smash again in the fuel pulverizer.

Preferably, the cold mellow wine tower includes cold mellow wine casing, and install in filter layer, gas distribution board and level gauge in the cold mellow wine casing, inlet and air inlet have been seted up on the lateral wall of cold mellow wine casing, the gas outlet has still been seted up to the upper end of cold mellow wine casing, the liquid outlet has been seted up to the lower extreme of cold mellow wine casing, filter layer and gas distribution board are arranged along vertical direction, and the outer fringe is all fixed on the inner wall of cold mellow wine casing, the filter layer is located gas distribution board top, the air inlet is located gas distribution board below, the inlet is located the filter layer with between the gas distribution board, the inlet be used for to let in the desalinized water in the cold mellow wine casing, the feed gas that coal gas emergence processing mechanism produced can pass through the air inlet lets in the cold mellow wine casing, and warp by desalinized water dissolution absorption behind the gas distribution board gas distribution, the liquid outlet is used for the derivation of liquid methyl alcohol, is not passed through after the filter layer filters the gas outlet discharge and lets in the methyl alcohol synthesis processing mechanism, the level gauge is used for observing liquid level height in the cold mellow wine casing.

Preferably, the gas distribution plate is two-layer, and two-layer the gas distribution plate is arranged along vertical direction, a plurality of through holes have been seted up on the gas distribution plate, and two-layer from top to bottom on the gas distribution plate the through hole staggers the setting.

Preferably, the liquid inlet is connected with a pump body, and the pump body is used for pumping desalted water into the cold alcohol shell.

Preferably, the gas generating and processing mechanism comprises a gas generating furnace, a blast furnace gas desulfurizing tower, a gas shift converter and a decarbonizing device, the gas generating furnace is used for gasifying the small-particle-size fuel crushed by the fuel crusher, the gas fuel is introduced into the blast furnace gas desulfurizing tower for desulfurization, the desulfurized gas fuel is shifted in the gas shift converter, carbon monoxide is converted into carbon dioxide, and the decarbonizing device is used for removing excessive carbon dioxide in the shifted gas.

Preferably, the methyl alcohol synthesis processing mechanism includes methyl alcohol synthesizer, methyl alcohol cooler, methyl alcohol separator and flash tank, the methyl alcohol synthesizer is used for receiving the feed gas that the coal gas generation processing mechanism produced and the gaseous methyl alcohol that is not dissolved in the cold mellow wine tower to carry out the methyl alcohol synthesis, the mist that contains methyl alcohol that the methyl alcohol cooler produced can let in cool off in the methyl alcohol cooler, mist after the cooling can let in carry out the formation of liquid methyl alcohol in the methyl alcohol separator, just the liquid methyl alcohol that the methyl alcohol separator produced can get into rectification flash distillation in the flash tank, the mist that does not handle in the methyl alcohol separator can let in the cold mellow wine tower dissolve, the liquid methyl alcohol that produces in the cold mellow wine tower can get into rectification flash distillation in the flash tank.

The utility model discloses for prior art gain following technological effect:

the utility model provides a methanol preparation device, the fuel grinder is used for smashing solid fuel, and the discharge gate department of fuel grinder connects a conveying mechanism's one end, conveying mechanism is used for carrying the small-grain diameter fuel after the fuel grinder is smashed to the feed inlet department that coal gas took place processing mechanism, and then for coal gas generator provides the coal of suitable particle size, improve coal gasification effect and gasification efficiency, and then can improve methyl alcohol output, coal gas takes place processing mechanism and is used for producing the feed gas to solid fuel gasification, coal gas takes place processing mechanism and is used for providing the feed gas of synthetic methyl alcohol for methyl alcohol synthetic processing mechanism, and methyl alcohol synthetic processing mechanism can derive the liquid methyl alcohol that produces, the gaseous methyl alcohol that methyl alcohol synthetic processing mechanism produced can let in the cold alcohol tower, the cold alcohol tower can be handled gaseous methyl alcohol into liquid methyl alcohol and derive, and the reaction can be participated in letting in the methyl alcohol synthetic processing mechanism again to the unabsorbed gas in the cold alcohol tower, and then under the prerequisite of realizing methyl alcohol is synthetic, still recycle gaseous methyl alcohol output, improve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a methanol production plant provided by the present invention;

FIG. 2 is a schematic view of the internal structure of the fuel pulverizer of the present invention;

FIG. 3 is a schematic diagram of the internal structure of the inter-cooling alcohol tower of the present invention;

in the figure: 100-methanol preparation device, 1-fuel pulverizer, 101-feeding hopper, 102-pulverizing shell, 103-driving element, 104-rotating shaft, 105-blade, 106-discharging port, 2-screening mechanism, 3-coal gas generation processing mechanism, 4-compressor, 5-methanol synthesizer, 6-methanol cooler, 7-methanol separator, 8-cold alcohol tower, 801-cold alcohol shell, 802-filtering layer, 803-gas distribution plate, 804-through hole, 805-liquid level meter, 806-gas outlet, 807-liquid inlet, 808-gas inlet, 809-liquid outlet, 9-flash tank and 10-pump body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The utility model aims at providing a methanol preparation device to solve current methanol preparation output low, extravagant serious technical problem.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-fig. 3, the utility model provides a methanol preparation device 100, including fuel grinder 1, processing mechanism 3 takes place for the coal gas, methyl alcohol synthesis processing mechanism and cold alcohol tower 8, fuel grinder 1 is used for smashing solid fuel, and the one end of a conveying mechanism is connected to the discharge gate 106 department of fuel grinder 1, conveying mechanism is used for carrying the small-particle diameter fuel after smashing through fuel grinder 1 to the feed inlet department of processing mechanism 3 takes place for the coal gas, and then for the coal gas generator provides the coal of suitable particle size, improve coal gasification effect and gasification efficiency, and then can improve methyl alcohol output, wherein, conveying mechanism's concrete structure can be the conveyer belt, carry flood dragon etc., again do not do specific limitation, as long as can realize coal transport, coal gas takes place processing mechanism 3 and is used for producing the raw gas to solid fuel gasification, coal gas generation processing mechanism 3 is used for providing the raw material gas of synthetic methyl alcohol for methyl alcohol synthesis processing mechanism, and methyl alcohol synthesis processing mechanism can derive the liquid methyl alcohol that produces, gaseous methyl alcohol synthesis processing mechanism can derive the gaseous methyl alcohol that the gaseous state synthesis processing mechanism produced can let in cold alcohol tower 8 can let in and the gaseous methanol synthesis reaction recovery mechanism again, and the gaseous methanol synthesis reaction mechanism is realized again, and the gaseous methanol recovery mechanism that the gaseous state is not utilized under the precondition of the synthetic methanol recovery.

Specifically, the fuel pulverizer 1 includes a feeding hopper 101, a pulverizing casing 102, a driving element 103 and a pulverizing element, the pulverizing casing 102 is disposed obliquely so that fuel can be pulverized and slide down along the oblique pulverizing casing 102, the feeding hopper 101 is mounted at the upper end of the pulverizing casing 102 and is used for feeding solid fuel into the pulverizing casing 102 to prevent coal from falling off, the driving element 103 is mounted at the outside of the pulverizing casing 102, the pulverizing element is mounted inside the pulverizing casing 102, and the driving element 103 is used for driving the pulverizing element to rotate, and along with the rotation of the pulverizing element, the pulverizing element can pulverize the solid fuel in the pulverizing casing 102 to form coal with a size meeting the use requirement, a discharge port 106 is disposed at the lower end of the pulverizing casing 102, and the discharge port 106 is located at one end of the conveying mechanism, so that the small-particle-size fuel falling through the discharge port 106 can be fed into the gas generation processing mechanism 3.

The driving element 103 is a motor, the crushing element comprises a rotating shaft 104 and a plurality of blades 105, an output shaft of the motor is coaxially connected with one end of the rotating shaft 104, the other end of the rotating shaft 104 is rotatably connected with the inner wall of the crushing shell 102, the blades 105 are uniformly arranged at different positions of the rotating shaft 104, and the specific size of the blades 105 can be changed according to the actual particle size so as to obtain coal meeting the standard size, thereby improving the crushing efficiency.

The lower end of the discharge port 106 is provided with a screening mechanism 2, the screening mechanism 2 is used for screening small-particle-size fuel crushed by the fuel pulverizer 1, one end of the conveying mechanism is located at the lower end of the screening mechanism 2 and is used for conveying the small-particle-size fuel screened by the screening mechanism 2 into the coal gas generation and treatment mechanism 3, large-particle-size fuel left by the screening mechanism 2 can be conveyed back into the fuel pulverizer 1 to be crushed again, so that the utilization rate of coal is improved, the gasification efficiency is improved, and the opening size of the screening mechanism 2 can be selected according to actual needs.

The cold alcohol tower 8 comprises a cold alcohol shell 801, a filter layer 802, an air distribution plate 803 and a liquid level meter 805 which are installed in the cold alcohol shell 801, a liquid inlet 807 and an air inlet 808 are formed in the side wall of the cold alcohol shell 801, an air outlet 806 is further formed in the upper end of the cold alcohol shell 801, a liquid outlet 809 is formed in the lower end of the cold alcohol shell 801, the filter layer 802 and the air distribution plate 803 are arranged in the vertical direction, the outer edges of the filter layer 802 and the air distribution plate 803 are fixed on the inner wall of the cold alcohol shell 801, installation of the filter layer 802 and the air distribution plate 803 is achieved, the filter layer 802 is located above the air distribution plate 803, the air inlet 808 is located below the air distribution plate 803, the liquid inlet 807 is located between the filter layer 802 and the air distribution plate 803, the liquid inlet 807 is used for introducing desalted water into the cold alcohol shell 801, the desalted water flows from top to bottom in the cold alcohol shell 801, the feed gas generated by the gas generation processing mechanism 3 can be introduced into the cold alcohol shell 801 through the air inlet 808, the cold alcohol shell 801 and flow from bottom to top, the feed gas is distributed by the air distribution plate 803, the gas is used for avoiding the feed gas from being fully contacted with the desalted water and being dissolved by the methanol liquid outlet, the gas outlet, the methanol synthesis liquid outlet is used for avoiding the waste caused by the methanol dissolution process, the methanol recovery cost of the methanol synthesis liquid outlet 806, and the methanol recovery mechanism, the methanol recovery mechanism is reduced, and the methanol recovery process.

The gas distribution plates 803 are two-layer, the two layers of gas distribution plates 803 are arranged in the vertical direction, a plurality of through holes 804 are formed in the gas distribution plates 803, and the through holes 804 in the upper layer of gas distribution plate 803 and the lower layer of gas distribution plate 803 are staggered, so that the raw material gas and desalted water are fully dissolved and then drop from the gas distribution plates 803 and are discharged through the liquid outlet 809.

Fluid inlet 807 is connected to a pump block 10. The pump block 10 is used to pump desalinated water into the cold alcohol housing 801 to sufficiently dissolve the desalinated water with the gaseous methanol to form liquid methanol.

The gas generating and processing mechanism 3 comprises a gas generating furnace, a blast furnace gas desulfurizing tower, a gas shift converter and a decarbonizing device, wherein the gas generating furnace is used for gasifying the small-particle-size fuel crushed by the fuel crusher 1, introducing the gas fuel into the blast furnace gas desulfurizing tower for desulfurization, converting the desulfurized gas fuel in the gas shift converter and converting carbon monoxide into carbon dioxide, and the decarbonizing device is used for removing excessive carbon dioxide in the converted gas to obtain feed gas meeting the use standard. The structure and principle of each element in the gas generation processing mechanism 3 are consistent with those of the prior art, and the process is also a conventional mature process and is not described too much here.

The methanol synthesis treatment mechanism comprises a methanol synthesizer 5, a methanol cooler 6, a methanol separator 7 and a flash evaporation tank 9, wherein the methanol synthesizer 5 is used for receiving raw material gas generated by the gas generation treatment mechanism 3 and undissolved gaseous methanol in a cold alcohol tower 8 and carrying out methanol synthesis, mixed gas containing methanol generated by the methanol cooler 6 can be introduced into the methanol cooler 6 for cooling, the cooled mixed gas can be introduced into the methanol separator 7 for generating liquid methanol, the liquid methanol generated by the methanol separator 7 can enter the flash evaporation tank 9 for rectification and flash evaporation, the unprocessed mixed gas in the methanol separator 7 can be introduced into the cold alcohol tower 8 for dissolving, the liquid methanol generated in the cold alcohol tower 8 can enter the flash evaporation tank 9 for rectification and flash evaporation, further refined methanol is obtained, a compressor 4 is further arranged between the methanol synthesizer 5 and the gas generation treatment mechanism 3, and the compressor 4 is used for introducing the raw material gas into the methanol synthesizer 5. The structure and principle of each element in the methanol synthesis processing mechanism are consistent with those of the prior art, and the process is also a conventional mature process and is not described too much here.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present description should not be construed as a limitation of the present invention.

Claims

1. A methanol preparation device is characterized in that: the device comprises a fuel pulverizer, a coal gas generation processing mechanism, a methanol synthesis processing mechanism and a cold alcohol tower, wherein a discharge port of the fuel pulverizer is connected with one end of a conveying mechanism, the other end of the conveying mechanism is connected with a feed port of the coal gas generation processing mechanism, the coal gas generation processing mechanism can be communicated with the methanol synthesis processing mechanism, the methanol synthesis processing mechanism can be communicated with the cold alcohol tower, and a gas outlet of the cold alcohol tower can be communicated with the methanol synthesis processing mechanism.

2. The methanol production apparatus according to claim 1, characterized in that: the fuel pulverizer comprises a feeding funnel, a pulverizing shell, a driving element and a pulverizing element, wherein the pulverizing shell is obliquely arranged, the feeding funnel is installed at the upper end of the pulverizing shell and used for feeding solid fuel into the pulverizing shell, the driving element is installed outside the pulverizing shell, the pulverizing element is installed inside the pulverizing shell, the driving element is used for driving the pulverizing element to rotate and enable the pulverizing element to pulverize the solid fuel in the pulverizing shell, the lower end of the pulverizing shell is provided with the discharge port, and the discharge port is located at one end of the conveying mechanism.

3. The methanol production apparatus according to claim 2, characterized in that: the drive element is a motor, the crushing element comprises a rotating shaft and a plurality of blades, an output shaft of the motor is coaxially connected with one end of the rotating shaft, the other end of the rotating shaft is rotatably connected with the inner wall of the crushing shell, and the blades are uniformly arranged at different positions of the rotating shaft.

4. The methanol production apparatus according to claim 1, characterized in that: the lower extreme of discharge gate is equipped with screening mechanism, screening mechanism is used for right small-particle size fuel after the fuel grinder is smashed screens, conveying mechanism's one end is located screening mechanism lower extreme, and be used for with small-particle size fuel under the screening mechanism sieve sends into extremely in the coal gas takes place processing mechanism, the large particle size fuel that screening mechanism left can be sent back smash in the fuel grinder again.

5. The methanol production apparatus according to claim 1, characterized in that: the cold mellow wine tower includes cold mellow wine casing, and install in filter layer, gas distribution board and level gauge in the cold mellow wine casing, inlet and air inlet have been seted up on the lateral wall of cold mellow wine casing, the upper end of cold mellow wine casing has still been seted up the gas outlet, the liquid outlet has been seted up to the lower extreme of cold mellow wine casing, filter layer and gas distribution board are arranged along vertical direction, and the outer fringe is all fixed on the inner wall of cold mellow wine casing, the filter layer is located gas distribution board top, the air inlet is located gas distribution board below, the inlet is located the filter layer with between the gas distribution board, coal gas take place processing mechanism with the air inlet intercommunication, the level gauge install in the cold mellow wine casing.

6. The methanol production apparatus according to claim 5, characterized in that: the air distribution plate is two-layer, and two-layer the air distribution plate is arranged along vertical direction, a plurality of through holes have been seted up on the air distribution plate, and two-layer from top to bottom on the air distribution plate the through hole setting of staggering.

7. The methanol production apparatus according to claim 5, characterized in that: the liquid inlet is connected with a pump body, and the pump body is used for pumping desalted water into the cold alcohol shell.

8. The methanol production apparatus according to claim 1, characterized in that: the coal gas generating and processing mechanism comprises a coal gas generating furnace, a blast furnace gas desulfurizing tower, a coal gas shift converter and decarburization equipment which are sequentially communicated.

9. The methanol production apparatus according to claim 1, characterized in that: the methanol synthesis treatment mechanism comprises a methanol synthesizer, a methanol cooler, a methanol separator and a flash tank which are sequentially communicated, the methanol synthesizer is communicated with the coal gas generation treatment mechanism and the cold alcohol tower, the methanol separator is communicated with the cold alcohol tower, and the cold alcohol tower is communicated with the flash tank.