阅读说明：本技术 一种利用焦炉散热发电的方法 (Method for generating electricity by utilizing heat dissipation of coke oven ) 是由 王晓东 刘瑞峰 刘超 张熠 张雷 吴添 吴铄 吕彭 潘忠亮 姚腾豪 于 2021-09-09 设计创作，主要内容包括：本发明涉及一种利用焦炉散热发电的方法,以焦炉的高温部位作为热源,以环境空气为冷源,通过设有温差发电元件的发电装置发电,供电电路通过调压电路、稳压电路对电压进行处理使其符合使用要求后,为包括焦炉生产、烘炉、标定、鉴定时使用的温度传感器、压力传感器、流量传感器及无线通信收发器在内的用电元件进行供电；上述用电元件无需外接电源,节省焦炉投资成本,有利于促进焦炉的智能化进程。(The invention relates to a method for generating power by utilizing heat dissipation of a coke oven, which takes a high-temperature part of the coke oven as a heat source, takes ambient air as a cold source, generates power by a power generation device provided with a temperature difference power generation element, and supplies power to power utilization elements including a temperature sensor, a pressure sensor, a flow sensor and a wireless communication transceiver which are used during coke oven production, oven drying, calibration and identification after a power supply circuit processes voltage by a voltage regulating circuit and a voltage stabilizing circuit to enable the voltage to meet the use requirement; the electric element does not need an external power supply, saves the investment cost of the coke oven and is beneficial to promoting the intelligent process of the coke oven.)

1. A method for generating electricity by utilizing heat dissipation of a coke oven is characterized in that a high-temperature part of the coke oven is used as a heat source, ambient air is used as a cold source, electricity is generated by a power generation device provided with a temperature difference power generation element, and a power supply circuit supplies power to electric elements including a temperature sensor, a pressure sensor, a flow sensor and a wireless communication transceiver used in coke oven production, oven drying, calibration and identification after processing voltage through a voltage regulating circuit and a voltage stabilizing circuit to enable the voltage to meet the use requirement.

2. The method for generating electricity by utilizing heat dissipation of the coke oven as claimed in claim 1, wherein the high-temperature part of the coke oven is a part with the surface temperature exceeding 50 ℃ in the working state of the coke oven.

3. The method for generating power by using heat dissipation of the coke oven as claimed in claim 1 or 2, wherein the high-temperature parts of the coke oven comprise a fire observation hole and a fire observation hole cover, a coal loading hole and a coal loading hole cover, a carbon removal hole and a carbon removal hole cover, a protection plate, a flue wall, a regenerator sealing wall, an exhaust gas exchange shutter and a furnace protection iron piece.

4. The method for generating power by utilizing coke oven heat dissipation of claim 1, wherein the thermoelectric generation element is a semiconductor element manufactured according to the seebeck effect principle; the hot end surface of the thermoelectric generation element is close to the surface of the heat source, the cold end of the thermoelectric generation element is in contact with air for heat dissipation, or the cold end of the thermoelectric generation element exchanges heat with cold air or cooling water, and heat after heat exchange is dissipated to the air nearby.

5. The method for generating power by using coke oven heat dissipation of claim 1, wherein a plurality of groups of thermoelectric generation elements are arranged according to the voltage or power requirements of the electric elements, and the thermoelectric generation elements of each group are connected in series or in parallel to form a power supply circuit.

6. The method for generating power by utilizing coke oven heat dissipation of claim 1, wherein the voltage regulating circuit is a voltage boosting circuit and/or a voltage reducing circuit.

7. The method for generating power by using coke oven heat dissipation of claim 1, wherein the voltage regulator circuit is a voltage regulator circuit whose output is directly regulated by a filter circuit, or an independent voltage regulator chip is used to form an independent voltage regulator circuit.

8. The method for generating power by using coke oven heat dissipation as defined in claim 1, wherein the processed voltage is 3V-24V.

9. The method for generating power by utilizing coke oven heat dissipation of claim 1, wherein a storage battery is arranged in the power supply circuit as an energy storage element, or no storage battery is arranged.

10. The method for generating power by using coke oven heat dissipation of claim 1, wherein the voltage regulating circuit and the voltage stabilizing circuit are integrated inside the power generation device or are independently arranged outside the power generation device.

Technical Field

The invention relates to the technical field of waste heat utilization of coke ovens, in particular to a method for generating power by utilizing heat dissipation of a coke oven.

Background

The intelligent operation of the coke oven requires different types of sensors and transmitters to be arranged at each part of the coke oven. The coke oven has the disadvantages of large volume, complex structure and severe operating environment, so that the arrangement of power supply and signal cables is very difficult on site, and the requirements on the fire resistance and heat resistance of the cables are high. Even under the condition that the low-power wireless communication technology is rapidly developed, power supplies still have to be provided for various sensors and transmitters by cables; the total length of the cable on one coke oven for providing power supply and communication for various sensors and transmitters can reach thousands of kilometers. While consuming a large amount of materials, the method also greatly hinders the application and development of the wireless communication technology, and greatly improves the intelligent cost of the coke oven.

The thermoelectric power generation technology is a new energy technology which utilizes a semiconductor Seebeck effect (Seebeck effect) to directly convert heat energy into electric energy, and has the characteristics of compact structure, no moving parts, reliable performance, no maintenance, no noise during working, low carbon, environmental protection and the like.

The coke oven is an important large-scale furnace for making coke by coal in the metallurgical industry, the temperature in a combustion chamber is usually 1100-1350 ℃, the surface temperature of a furnace body is higher, the surface heat dissipation capacity of the furnace body reaches about 12% of the heat consumption of coking, namely, the situation that a large amount of temperature difference can be utilized to generate electricity exists on the surface of the coke oven, and the popularization of the temperature difference electricity generation on the coke oven is favorable for promoting the intelligent development of the coke oven.

Chinese utility model patent No. CN208883786U discloses a coke oven gas collecting tube pressure data measuring device, which is dedicated and fixed, and utilizes a high temperature heat source on the gas collecting tube, and the output voltage is 5V, for driving a pressure sensor. The above patent adopts fixed installation, fixed output voltage, and only uses the heat dissipation of the gas collecting pipe as the heat source. Therefore, there is a need for a non-stationary method of controlling output voltage that can utilize heat sources at different locations and temperatures.

Disclosure of Invention

The invention provides a method for generating power by utilizing heat dissipation of a coke oven, which takes high-temperature parts of the coke oven, such as a fire observation hole, a coal charging hole, a carbon removal hole, a protection plate, an iron piece for protecting the coke oven, and the like as heat sources, adopts a semiconductor temperature difference power generation element manufactured according to the Seebeck effect principle to generate power, supplies power to electric elements for various sensors, wireless communication transceivers, and the like for the coke oven, does not need an external power supply for the electric elements, saves the investment cost of the coke oven, and is beneficial to promoting the intelligent process of the coke oven.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for generating electricity by utilizing heat dissipation of a coke oven comprises the steps of using a high-temperature part of the coke oven as a heat source, using ambient air as a cold source, generating electricity by a power generation device provided with a temperature difference power generation element, and supplying power to electric elements including a temperature sensor, a pressure sensor, a flow sensor and a wireless communication transceiver used in coke oven production, oven drying, calibration and identification after a power supply circuit processes voltage through a voltage regulating circuit and a voltage stabilizing circuit to enable the voltage to meet the use requirement.

The high-temperature part of the coke oven is the part with the surface temperature exceeding 50 ℃ in the working state of the coke oven.

The high-temperature part of the coke oven comprises a fire observation hole and a fire observation hole cover, a coal charging hole and a coal charging hole cover, a carbon removal hole and a carbon removal hole cover, a protection plate, a smoke separation channel wall, a regenerator sealing wall, a waste gas exchange shutter and a furnace protection iron piece.

The thermoelectric power generation element is a semiconductor element manufactured according to the Seebeck effect principle; the hot end surface of the thermoelectric generation element is close to the surface of the heat source, the cold end of the thermoelectric generation element is in contact with air for heat dissipation, or the cold end of the thermoelectric generation element exchanges heat with cold air or cooling water, and heat after heat exchange is dissipated to the air nearby.

According to the voltage or power requirement of the electric elements, the temperature difference generating elements are provided with a plurality of groups, and the temperature difference generating elements of each group are connected in series or in parallel to form a power supply circuit.

The voltage regulating circuit is a voltage boosting circuit and/or a voltage reducing circuit.

The voltage stabilizing circuit is characterized in that the voltage stabilizing circuit is used for directly stabilizing the voltage of the output end of the voltage regulating circuit through the filter circuit, or an independent voltage stabilizing chip is adopted to form an independent voltage stabilizing circuit.

The voltage after treatment is 3V-24V.

And a storage battery is arranged in the power supply circuit and is used as an energy storage element, or the storage battery is not arranged.

The voltage regulating circuit and the voltage stabilizing circuit are integrated inside the power generation device or are independently arranged outside the power generation device.

Compared with the prior art, the invention has the beneficial effects that:

1) uses the parts of a coking chamber, a combustion chamber, a regenerator and the like with higher surface temperature and/or high-temperature radiation in the coke oven. An environment or a heat exchange device is used as a cold end, and a semiconductor thermoelectric generation element manufactured according to the Seebeck effect principle is adopted for generating electricity, so that electric energy can be conveniently obtained at each part of the coke oven;

2) the voltage regulating circuit and the voltage stabilizing circuit are adopted to convert an unstable power supply generated by the temperature difference power generation element into a power supply with constant voltage, and a storage battery is additionally arranged in the main power supply circuit to further obtain stable power supply output;

3) the system can directly supply power to various electric elements such as temperature sensors, pressure sensors, flow sensors and the like, and can build a sensor network without power supply and maintenance on the coke oven by matching with a wireless communication technology, thereby promoting the intelligent development of the coke oven.

Detailed Description

The invention relates to a method for generating power by utilizing heat dissipation of a coke oven, which takes a high-temperature part of the coke oven as a heat source, takes ambient air as a cold source, generates power by a power generation device provided with a temperature difference power generation element, and supplies power to power utilization elements including a temperature sensor, a pressure sensor, a flow sensor and a wireless communication transceiver used in coke oven production, oven drying, calibration and identification after a power supply circuit processes voltage by a voltage regulating circuit and a voltage stabilizing circuit to enable the voltage to meet the use requirements.

The high-temperature part of the coke oven is the part with the surface temperature exceeding 50 ℃ in the working state of the coke oven.

The high-temperature part of the coke oven comprises a fire observation hole and a fire observation hole cover, a coal charging hole and a coal charging hole cover, a carbon removal hole and a carbon removal hole cover, a protection plate, a smoke separation channel wall, a regenerator sealing wall, a waste gas exchange shutter and a furnace protection iron piece.

The thermoelectric power generation element is a semiconductor element manufactured according to the Seebeck effect principle; the hot end surface of the thermoelectric generation element is close to the surface of the heat source, the cold end of the thermoelectric generation element is in contact with air for heat dissipation, or the cold end of the thermoelectric generation element exchanges heat with cold air or cooling water, and heat after heat exchange is dissipated to the air nearby.

According to the voltage or power requirement of the electric elements, the temperature difference generating elements are provided with a plurality of groups, and the temperature difference generating elements of each group are connected in series or in parallel to form a power supply circuit.

The voltage regulating circuit is a voltage boosting circuit and/or a voltage reducing circuit.

The voltage stabilizing circuit is characterized in that the voltage stabilizing circuit is used for directly stabilizing the voltage of the output end of the voltage regulating circuit through the filter circuit, or an independent voltage stabilizing chip is adopted to form an independent voltage stabilizing circuit.

The voltage after treatment is 3V-24V.

And a storage battery is arranged in the power supply circuit and is used as an energy storage element, or the storage battery is not arranged.

The voltage regulating circuit and the voltage stabilizing circuit are integrated inside the power generation device or are independently arranged outside the power generation device.

In the present invention, the cold source (ambient air) is the final receiver after the heat flow of the heat source passes through the temperature power generation element. The cold end of the thermoelectric power generation element is provided with a heat dissipation device (such as a heat dissipation sheet) or a heat exchange device (such as an air cooling heat exchanger and a water cooling heat exchanger), the circulation of heat is only accelerated, and the final receiver of the heat is still a cold source (ambient air).

The thermoelectric generation element is a semiconductor element manufactured according to the seebeck effect principle, and when a certain temperature difference exists between the cold end and the hot end of the thermoelectric generation element, a part of heat flow passing through the thermoelectric generation element can be converted into electric energy. The thermoelectric power generation element is a commercially available finished product, and the specific structure is not described herein.

The power generation device can ensure that the heat flow is well transmitted to the thermoelectric generation element, the hot end of the thermoelectric generation element is not more than the working temperature which can be borne by the thermoelectric generation element, and the cold end of the thermoelectric generation element needs to have good heat dissipation capacity.

In order to meet the requirements of different cold and heat source conditions and different electric elements, different quantities and types of thermoelectric power generation elements can be connected in series or in parallel to meet different voltage and power requirements.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.