CN219301330U

CN219301330U - Utilize kiln waste heat flue gas hydrogen generation electricity generation, heating, stoving and hot water equipment

Info

Publication number: CN219301330U
Application number: CN202222221245.XU
Authority: CN
Inventors: 王海东
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-07-04
Anticipated expiration: 2032-08-23

Abstract

The utility model provides a device for generating hydrogen, heating, drying and heating by utilizing waste heat smoke of a kiln, and relates to the application of waste heat smoke, in particular to the application field of waste heat smoke hydrogen generation and power generation. Including mixed liquid holding vessel, accumulator, hydrogen buffer tube, overheated coil pipe and tubulation are equipped with in the accumulator, hydrogen buffer tube is equipped with in the mixed liquid holding vessel, install the breather on the mixed liquid holding vessel, the play liquid end of mixed liquid holding vessel is connected with a metering pump through a pipeline, install the drain valve on the pipeline, a metering pump is connected through the entry end of No. two pipelines and overheated coil pipe, install manometer and protection gas valve on the pipeline No. two. The utility model realizes the actual use of the waste heat flue gas of the kiln to produce hydrogen and generate electricity and the residual gas after the electricity generation to burn and heat, dry and heat water, reduces the burning and electricity generation cost and meets the national requirements of energy conservation, consumption reduction and emission reduction.

Description

Utilize kiln waste heat flue gas hydrogen generation electricity generation, heating, stoving and hot water equipment

Technical Field

The utility model provides a device for generating hydrogen, heating, drying and heating by utilizing waste heat smoke of a kiln, and relates to the application of waste heat smoke, in particular to the application field of waste heat smoke hydrogen generation and power generation.

Background

The hydrogen production by methanol refers to a process of mixing methanol with steam and then performing a catalytic reaction under certain temperature and pressure conditions to make the methanol undergo a cracking reaction and finally obtain hydrogen and carbon dioxide. The mixture of methanol and water vapor is heated and catalyzed in a reformer to complete the reforming reaction, hydrogen and carbon dioxide are generated by the reaction, and the reaction formula is as follows:

the main reaction: ch3oh=co+2h2+90.7 KJ/mol

CO+H2O＝CO2+H2 -41.2KJ/mol

Side reaction: 2ch3oh=ch3och3+h2o+24.9 KJ/mol

CO+3H2＝CH4+H2O+206.3KJ/mol

The specific method for producing hydrogen from methanol in industry is that methanol and desalted water are mixed according to a certain proportion and then are sent into a vaporizer for vaporization, vaporized water-methanol steam is overheated by a superheater and then enters a converter, a catalyst is arranged in the converter, the water-methanol steam is subjected to cracking reaction in the converter under the action of the catalyst to produce hydrogen and carbon dioxide, heat conducting oil, a heat conducting oil pump and electricity consumption thereof are needed during the period, and the occupied area of equipment is large. The waste heat resource of the kiln mainly refers to energy taken away by flue gas in the process of melting and clarifying raw material powder of the kiln, and the energy is generally discharged along with the discharge of the flue gas. This part of the energy occupies more than 30% of the energy consumption of the production process. At present, the waste heat and the flue gas of the kiln are directly discharged or the waste heat and the flue gas are singly recycled, and the energy in the waste heat and the flue gas is directly released to cause waste. Because the hydrogen production from methanol is a self-heat absorption reaction, if the self-heat absorption reaction is carried out by effectively utilizing the waste heat of the flue gas, the consumption of external energy sources such as natural gas, liquefied gas, electricity and the like is saved, and the produced mixed gas can be skillfully utilized to generate electricity and then burn. Therefore, the device for generating electricity, heating, drying and heating by utilizing the waste heat and the flue gas of the kiln is provided.

Disclosure of Invention

The equipment for generating hydrogen and generating electricity by utilizing the waste heat flue gas of the kiln, heating, drying and heating provided by the utility model realizes the purpose of generating hydrogen and generating electricity by utilizing the waste heat flue gas of the kiln and the actual use of burning heating, drying and hot water by using the residual gas after the electricity generation, reduces the burning and generating cost and meets the national energy-saving, consumption-reducing and emission-reducing requirements.

The utility model provides equipment for producing hydrogen, generating electricity, heating, drying and heating by utilizing waste heat and smoke of a kiln, which comprises a mixed liquid storage tank, a heat accumulator and a hydrogen buffer tube, wherein an overheating coil tube and a tube are arranged in the heat accumulator, the hydrogen buffer tube is arranged in the mixed liquid storage tank, a ventilator is arranged on the mixed liquid storage tank, a liquid outlet end of the mixed liquid storage tank is connected with a first metering pump through a first pipeline, a liquid outlet valve is arranged on the first pipeline, the first metering pump is connected with an inlet end of the overheating coil tube through a second pipeline, a pressure gauge and a protective gas valve are arranged on the second pipeline, an outlet end of the overheating coil tube is connected with an inlet end of the tube through a connecting pipeline provided with a tube inlet valve, an outlet end of the tube is connected with an inlet end of the hydrogen buffer tube through a connecting pipeline provided with a flame arrester, the flame arrester is connected with a generator through a connecting pipeline, the other end of the generator is connected with a hydrogen combustion gas splitter, and two side outlet ends of the hydrogen combustion gas splitter are connected with external equipment.

Further, the tubes are internally provided with a catalyst.

Further, a waste heat flue gas inlet is arranged at the gas inlet end of the heat accumulator, and the waste heat flue gas inlet is connected with waste heat flue gas of an external kiln through a connecting pipeline.

Further, a waste heat flue gas outlet is arranged at the air outlet end of the heat accumulator, and the waste heat flue gas outlet is connected with an external chimney through a connecting pipeline.

Further, a coil inlet valve is arranged on the second pipeline and close to one side of the overheating coil.

Furthermore, a metering pump control valve is arranged on one side, close to the first metering pump, of the first pipeline, a second metering pump is arranged on one side, close to the first metering pump, of the second pipeline, the second metering pump is connected with the liquid outlet valve through a third pipeline, and a second metering pump control valve is arranged on the third pipeline.

Further, a buffer tube valve is installed on the connecting pipe line between the tube array and the hydrogen buffer tube and at one side close to the hydrogen buffer tube.

Further, a hydrogen outlet control valve and a hydrogen inlet generator control valve are sequentially connected to a connecting pipeline between the flame arrester and the generator.

Furthermore, the external equipment comprises a kiln and a heating and drying furnace, two ends of the hydrogen combustion gas flow divider are respectively communicated with the kiln and the heating and drying furnace through connecting pipelines, and a kiln control valve and a heating and drying furnace control valve are respectively arranged on the connecting pipelines at two sides.

Further, the other inlet end of the mixed liquor storage tank is connected with a mixed liquor inlet pipeline.

Further, a drain pipe is connected to the hydrogen buffer pipe, and a safety valve is installed on the hydrogen buffer pipe.

The utility model has the beneficial effects that:

in the utility model, the waste heat flue gas is utilized to produce hydrogen, and the integrated functions of generating electricity, reheating, drying and burning and hot water are provided. The waste heat flue gas is used as a heat source required by hydrogen production to carry out self-heat absorption reaction, the mixed gas produced by the reaction drives the generator to generate power, and the generated residual gas is combusted for heating and drying, so that the environmental pollution is reduced, and the reutilization of the waste heat flue gas is realized.

The utility model utilizes the waste heat of the kiln to meet the temperature of 220-250 ℃ required by the hydrogen production reaction, avoids heating natural gas, liquefied gas or electric energy for hydrogen production, saves energy and reduces consumption. And a heat transfer circulation system adopting heat conduction oil is omitted. The combustion and power generation cost is reduced, the national energy-saving and consumption-reducing and emission-reducing requirements are met, and all indexes are superior to the national environmental protection standards. The method realizes the scene that the hydrogen energy source is visible and touch and is practically applied.

Drawings

Fig. 1 is a schematic structural diagram of a device for producing hydrogen, generating electricity, heating, drying and heating by using flue gas after kiln waste heat, which is provided by the utility model.

1. Waste heat flue gas; 2. a waste heat flue gas inlet; 3. a heat accumulator; 4. a waste heat flue gas outlet; 5. a chimney; 6. a tube array; 7. a superheating coil; 8. a tubulation inlet valve; 9. a tubulation outlet valve; 10. a first metering pump; 11. a second metering pump; 12. a pressure gauge; 13. a shielding gas valve; 14. a coil inlet valve; 15. a liquid outlet valve; 16. a metering pump control valve; 17. a second metering pump control valve; 18. a buffer tube valve; 19. a mixed liquid storage tank; 20. a hydrogen buffer tube; 21. a safety valve; 22. a ventilator; 23. a mixed liquor inlet line; 24. a flame arrester; 25. a hydrogen outlet control valve; 26. hydrogen enters a generator control valve; 27. a generator; 28. a hydrogen combustion gas splitter; 29. a kiln control valve; 30. a heating and drying furnace control valve; 31. blow-down pipe

Detailed Description

The utility model provides equipment for producing hydrogen, generating electricity, heating, drying and heating by utilizing waste heat and smoke of a kiln, which comprises a mixed liquid storage tank 19, a heat accumulator 3 and a hydrogen buffer tube 20, wherein a overheating coil tube 7 and a tube array 6 are arranged in the heat accumulator 3, the hydrogen buffer tube 20 is arranged in the mixed liquid storage tank 19, a ventilator 22 is arranged on the mixed liquid storage tank 19, a first metering pump 10 is connected with a liquid outlet end of the mixed liquid storage tank 19 through a first pipeline, a liquid outlet valve 15 is arranged on the first pipeline, the first metering pump 10 is connected with an inlet end of the overheating coil tube 7 through a second pipeline, a pressure gauge 12 and a protective gas valve 13 are arranged on the second pipeline, an outlet end of the overheating coil tube 7 is connected with an inlet end of the tube array 6 through a connecting pipeline provided with a tube array inlet valve 8, an outlet end of the tube array 6 is connected with an inlet end of the hydrogen buffer tube 20 through a connecting pipeline provided with a flame arrester 24, the flame arrester 24 is connected with a second end of the hydrogen buffer tube 20 through a connecting pipeline, a second end of the flame arrester 24 is connected with a generator 27 through a connecting pipeline, and the other ends of the hydrogen buffer tube 20 are connected with external combustion equipment of the hydrogen generator 28 through hydrogen diverter 28.

Specifically, the tube array 6 is filled with a catalyst. Under the action of a catalyst, the mixture after vaporization and overheating is subjected to a cracking reaction to prepare hydrogen.

Specifically, the gas inlet end of the heat accumulator 3 is provided with a waste heat flue gas inlet 2, and the waste heat flue gas inlet 2 is connected with waste heat flue gas 1 of an external kiln through a connecting pipeline. Waste heat flue gas 1 of the kiln enters the heat accumulator 3 through the waste heat flue gas inlet 2 to accumulate heat, so that the waste heat flue gas 1 is recycled.

Specifically, the exhaust end of the heat accumulator 3 is provided with a waste heat flue gas outlet 4, and the waste heat flue gas outlet 4 is connected with an external chimney 5 through a connecting pipeline. The waste heat flue gas 3 can store heat in the heat accumulator 3 and is discharged by the waste heat flue gas outlet 4.

Specifically, a coil inlet valve 14 is installed on the second pipeline at a side close to the superheating coil 7.

Specifically, a metering pump control valve 16 is installed on one side, close to the first metering pump 10, of the first pipeline, a second metering pump 11 is installed on one side, close to the first metering pump 10, of the second pipeline, the second metering pump 11 is connected with a liquid outlet valve 15 through a third pipeline, and a second metering pump control valve 17 is installed on the third pipeline.

Specifically, a buffer tube valve 18 is installed on the connecting line between the tube array 6 and the hydrogen buffer tube 20 and on the side close to the hydrogen buffer tube 20. After opening the buffer tube valve 18, the produced hydrogen can enter the hydrogen buffer tube 20 from the inside of the column tube 6 through the connecting pipeline, and is cooled in the hydrogen buffer tube 20.

Specifically, a hydrogen outlet control valve 25 and a hydrogen inlet generator control valve 26 are sequentially connected to a connecting pipe between the flame arrester 24 and the generator 27. The generator 27 may be a hydrogen generator 27, with the hydrogen buffer tube 20 providing hydrogen to the generator 27 after passing through the flame arrestor 24.

Specifically, the external equipment comprises a kiln and a heating and drying furnace, two ends of the hydrogen combustion gas diverter 28 are respectively communicated with the kiln and the heating and drying furnace through connecting pipelines, and a kiln control valve 29 and a heating and drying furnace control valve 30 are respectively arranged on the connecting pipelines on two sides.

Specifically, the other inlet end of the mixed liquor storage tank 19 is connected with a mixed liquor inlet pipeline 23. The mixed liquor is fed from the mixed liquor inlet line 23 into the mixed liquor storage tank 19.

Specifically, the hydrogen buffer tube 20 is connected with a drain tube 31, and the safety valve 21 is installed on the hydrogen buffer tube 20.

The working principle of the utility model

According to the utility model, waste heat flue gas 1 enters a heat accumulator 3 through a connecting pipeline and a waste heat flue gas inlet 2, mixed liquid of methanol and desalted water is added into a mixed liquid storage tank 19 through a mixed liquid inlet pipeline 23, a liquid outlet valve 15, a first metering pump control valve 16, a second metering pump control valve 17, a protection gas valve 13 and a coil inlet valve 14 are opened, the mixed liquid in the mixed liquid storage tank 19 enters a superheating coil 7 through the first pipeline, the second pipeline and the third pipeline, water-methanol steam is obtained after vaporization and overheating of the superheating coil 7, a tube inlet valve 8 is opened, the water-methanol steam enters a tube 6 through the connecting pipeline, a catalyst is filled in the tube 6, under the action of the catalyst, the water-methanol steam generates pyrolysis reaction to prepare hydrogen and carbon dioxide, the carbon dioxide can be discharged to a chimney through a waste heat flue gas outlet, the tube outlet valve 9 and a buffer tube valve 18 are opened, the hydrogen enters a hydrogen buffer tube 20 for cooling through the connecting pipeline, after the cooling, the hydrogen enters a generator control valve 25 and a generator control valve 26 are opened, the hydrogen is acted on a generator 27 through the connecting pipeline to perform flameless power generation, then the hydrogen is burnt by a hydrogen combustion gas diverter 28 and a kiln, the waste heat is combusted by the kiln and the combustion gas is dried, and the waste heat is discharged to the kiln combustion cost is reduced, and the waste heat is effectively combusted, and the waste gas is dried, and the waste gas is combusted and burned by the kiln combustion and the kiln combustion cost is reduced.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. The utility model provides an utilize waste heat flue gas hydrogen generation of kiln electricity generation, heating, stoving, hot water equipment which characterized in that: comprises a mixed liquid storage tank (19), a heat accumulator (3) and a hydrogen buffer tube (20), wherein a superheating coil (7) and a protective gas valve (6) are arranged in the heat accumulator (3), the hydrogen buffer tube (20) is arranged in the mixed liquid storage tank (19), a ventilator (22) is arranged on the mixed liquid storage tank (19), a liquid outlet end of the mixed liquid storage tank (19) is connected with a first metering pump (10) through a first pipeline, a liquid outlet valve (15) is arranged on the first pipeline, the first metering pump (10) is connected with an inlet end of the superheating coil (7) through a second pipeline, a pressure gauge (12) and a protective gas valve (13) are arranged on the second pipeline, an outlet end of the superheating coil (7) is connected with an inlet end of the tube (6) through a connecting pipeline provided with a tube inlet valve (8), an outlet end of the tube (6) is connected with an inlet end of the hydrogen buffer tube (20) through a connecting pipeline provided with a fire extinguisher, an outlet end of the hydrogen buffer tube (20) is connected with a generator (27) through a connecting pipeline (24), a generator (27) is connected with a combustion resistor (27), and the outlet ends of the two sides of the hydrogen combustion gas flow divider (28) are connected with external equipment.

2. The device for generating electricity, heating, drying and heating by utilizing waste heat flue gas of a kiln according to claim 1, wherein the device is characterized in that: the tube array (6) is internally provided with a catalyst.

3. The device for generating electricity, heating, drying and heating by utilizing waste heat flue gas of a kiln according to claim 1, wherein the device is characterized in that: the waste heat flue gas inlet (2) is arranged at the gas inlet end of the heat accumulator (3), and the waste heat flue gas inlet (2) is connected with waste heat flue gas (1) of an external kiln through a connecting pipeline.

4. The device for generating electricity, heating, drying and heating by utilizing waste heat flue gas of a kiln according to claim 1, wherein the device is characterized in that: the exhaust end of the heat accumulator (3) is provided with a waste heat flue gas outlet (4), and the waste heat flue gas outlet (4) is connected with an external chimney (5) through a connecting pipeline.

5. The device for generating electricity, heating, drying and heating by utilizing waste heat flue gas of a kiln according to claim 1, wherein the device is characterized in that: and a coil inlet valve (14) is arranged on the second pipeline and is close to one side of the overheating coil (7).

6. The device for generating electricity, heating, drying and heating by utilizing waste heat flue gas of a kiln according to claim 1, wherein the device is characterized in that: a metering pump control valve (16) is arranged on one side, close to the first metering pump (10), of the first pipeline, a second metering pump (11) is arranged on one side, close to the first metering pump (10), of the second pipeline, the second metering pump (11) is connected with a liquid outlet valve (15) through a third pipeline, and a second metering pump control valve (17) is arranged on the third pipeline.

7. The device for generating electricity, heating, drying and heating by utilizing waste heat flue gas of a kiln according to claim 1, wherein the device is characterized in that: a buffer tube valve (18) is arranged on the connecting pipeline between the tube array (6) and the hydrogen buffer tube (20) and is close to one side of the hydrogen buffer tube (20).

8. The device for generating electricity, heating, drying and heating by utilizing waste heat flue gas of a kiln according to claim 1, wherein the device is characterized in that: and a hydrogen outlet control valve (25) and a hydrogen inlet generator control valve (26) are sequentially connected to a connecting pipeline between the flame arrester (24) and the generator (27).

9. The device for generating electricity, heating, drying and heating by utilizing waste heat flue gas of a kiln according to claim 1, wherein the device is characterized in that: the external equipment comprises a kiln and a heating and drying furnace, two ends of the hydrogen combustion gas flow divider (28) are respectively communicated with the kiln and the heating and drying furnace through connecting pipelines, and a kiln control valve (29) and a heating and drying furnace control valve (30) are respectively arranged on the connecting pipelines on two sides.

10. The device for generating electricity, heating, drying and heating by utilizing waste heat flue gas of a kiln according to claim 1, wherein the device is characterized in that: the other inlet end of the mixed liquor storage tank (19) is connected with a mixed liquor inlet pipeline (23).