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CN-115218183-B - Dual-fuel high-temperature heat source

CN115218183BCN 115218183 BCN115218183 BCN 115218183BCN-115218183-B

Abstract

The invention provides a dual-fuel high-temperature heat source, and belongs to the technical field of thermal science. The external part is provided with a low-grade fuel channel which is communicated with the boiler, the external part is also provided with an air channel which is communicated with the boiler through a heat source heat regenerator, the boiler is also provided with a fuel gas channel which is communicated with the external part through the heat source heat regenerator, the external part is also provided with a high-grade fuel channel which is communicated with the second boiler through the second heat source heat regenerator and the boiler, the second boiler is also provided with a fuel gas channel which is communicated with the external part through the second heat source heat regenerator, and the external part is provided with a heated medium channel which is communicated with the external part after the heated medium channel is communicated with the second boiler through the boiler, so that the dual-fuel channel is further communicated with the external part to form a high-temperature heat source.

Inventors

  • LI HUAYU
  • LI HONGRUI

Assignees

  • 李华玉

Dates

Publication Date
20260508
Application Date
20211231
Priority Date
20210103

Claims (11)

  1. 1. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler, a heat source regenerator and a second heat source regenerator, wherein a low-grade fuel channel is arranged outside and is communicated with the boiler (1), an air channel is arranged outside and is communicated with the boiler (1) through the heat source regenerator (3), a fuel gas channel is arranged outside and is communicated with the outside through the heat source regenerator (3), a high-grade fuel channel is arranged outside and is communicated with the second boiler (2), an air channel is arranged outside and is communicated with the second boiler (2) through the second heat source regenerator (4) and the boiler (1), the second boiler (2) is also communicated with the outside through the second heat source regenerator (4), and a heated working medium channel is also arranged outside and is communicated with the second boiler (2), so that the dual-fuel high-temperature heat source is formed.
  2. 2. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler and a heat source regenerator, wherein a low-grade fuel channel is arranged outside and communicated with the boiler (1), an air channel is arranged outside and communicated with the heat source regenerator (3), and then the dual-fuel high-temperature heat source is divided into two paths, namely, the first path is directly communicated with the boiler (1) and the second path is communicated with the second boiler (2) through the boiler (1), a fuel gas channel is also arranged outside and communicated with the outside through the heat source regenerator (3), a high-grade fuel channel is also arranged outside and communicated with the second boiler (2), a fuel gas channel is also arranged outside and communicated with the second boiler (2), and a heated working medium channel is also arranged outside to form the dual-fuel high-temperature heat source.
  3. 3. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler, a heat source regenerator and a second heat source regenerator, wherein a low-grade fuel channel is arranged outside and communicated with the boiler (1), an air channel is arranged outside and communicated with the boiler (1) through the heat source regenerator (3), a fuel gas channel is arranged outside and communicated with the outside through the heat source regenerator (3), a high-grade fuel channel is arranged outside and communicated with the second boiler (2), an air channel is arranged outside and communicated with the second boiler (2) through the second heat source regenerator (4) and the boiler (1), a heated working medium channel is arranged outside and communicated with the outside through the second heat source regenerator (4), and the heated working medium channel is arranged outside and is further communicated with the outside through the second boiler (2) after the heated working medium channel is communicated with the second boiler (2) through the boiler (1), so that the dual-fuel high-temperature heat source is formed.
  4. 4. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler and a heat source regenerator, wherein a low-grade fuel channel is arranged outside and communicated with the boiler (1), an air channel is arranged outside and communicated with the heat source regenerator (3), and then the dual-fuel high-temperature heat source is divided into two paths, namely, the first path is directly communicated with the boiler (1) and the second path is communicated with the second boiler (2) through the boiler (1), a fuel gas channel is also arranged outside and communicated with the outside through the heat source regenerator (3), a high-grade fuel channel is also arranged outside and communicated with the second boiler (2), a heated working medium channel is arranged outside and is communicated with the outside through the second boiler (2), and then the heated working medium channel is arranged outside and is communicated with the outside through the second boiler (2), so that the high-temperature heat source is formed.
  5. 5. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler and a heat source regenerator, wherein a low-grade fuel channel is arranged outside and communicated with the boiler (1), an air channel is arranged outside and communicated with the heat source regenerator (3), and then the dual-fuel high-temperature heat source is divided into two paths, namely, the first path is communicated with the boiler (1) and the second path is communicated with the second boiler (2) through the boiler (1), the boiler (1) is also provided with a primary gas channel and communicated with the second boiler (2), the outside is also provided with a high-grade fuel channel and communicated with the second boiler (2), the second boiler (2) is also provided with a heated working medium channel and communicated with the outside through the heat source regenerator (3), and the dual-fuel high-temperature heat source is formed.
  6. 6. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler and a heat source regenerator, wherein a low-grade fuel channel is arranged outside and is communicated with the boiler (1), an air channel is arranged outside and is communicated with the boiler (1) through the heat source regenerator (3), a primary fuel channel is arranged outside and is communicated with the second boiler (2), a high-grade fuel channel is arranged outside and is communicated with the second boiler (2), a fuel channel is arranged outside and is communicated with the outside through the heat source regenerator (3), and a heated working medium channel is arranged outside and is communicated with the second boiler (2) to form a dual-fuel high-temperature heat source.
  7. 7. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler and a heat source regenerator, wherein a low-grade fuel channel is arranged outside and communicated with the boiler (1), an air channel is arranged outside and communicated with the heat source regenerator (3), and then the dual-fuel high-temperature heat source is divided into two paths, namely, the first path is communicated with the boiler (1) and the second path is communicated with the second boiler (2) through the boiler (1), the boiler (1) is also provided with a primary gas channel and communicated with the second boiler (2), the outside is also provided with a high-grade fuel channel and communicated with the second boiler (2), the second boiler (2) is also provided with a heated working medium channel which is communicated with the outside after the heated working medium channel is communicated with the second boiler (2) through the boiler (1), and the heated working medium channel is further communicated with the outside, so that the high-temperature heat source is formed.
  8. 8. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler and a heat source regenerator, wherein a low-grade fuel channel is arranged outside and is communicated with the boiler (1), an air channel is arranged outside and is communicated with the boiler (1) through the heat source regenerator (3), a primary fuel channel is arranged outside and is communicated with the second boiler (2), a high-grade fuel channel is arranged outside and is communicated with the second boiler (2), a fuel channel is arranged outside and is communicated with the outside through the heat source regenerator (3), a heated working medium channel is arranged outside and is communicated with the outside through the second boiler (2), and a heated dual-fuel channel is arranged outside and is communicated with the second boiler (2) after the heated working medium channel is communicated with the second boiler (2) through the heat source regenerator (1), so that the high-temperature heat source is formed.
  9. 9. The dual-fuel high-temperature heat source mainly comprises an air heating furnace, a combustion chamber and a heat source regenerator, wherein low-grade fuel is communicated with the air heating furnace (5), an air channel is communicated with the air heating furnace (5) through the heat source regenerator (3), a gas channel is communicated with the outside through the heat source regenerator (3), the air channel is communicated with the combustion chamber (6) through the air heating furnace (5), a high-grade fuel channel is communicated with the combustion chamber (6), and a gas channel is communicated with the outside to form a dual-fuel high-temperature heat source.
  10. 10. The dual-fuel high-temperature heat source mainly comprises a primary combustion chamber and a secondary combustion chamber, wherein low-grade fuel is arranged outside and is communicated with the primary combustion chamber (7), an air channel is arranged outside and is respectively and directly communicated with the primary combustion chamber (7) and is communicated with the secondary combustion chamber (8) through the primary combustion chamber (7), a primary gas channel is arranged in the primary combustion chamber (7) and is communicated with the secondary combustion chamber (8), a high-grade fuel channel is arranged outside and is communicated with the secondary combustion chamber (8), and a gas channel is arranged in the secondary combustion chamber (8) and is communicated with the outside, so that the dual-fuel high-temperature heat source is formed.
  11. 11. The dual-fuel high-temperature heat source mainly comprises a primary combustion chamber and a secondary combustion chamber, wherein low-grade fuel is arranged outside and is communicated with the primary combustion chamber (7), an air channel is arranged outside and is communicated with the primary combustion chamber (7), a primary gas channel is arranged outside and is communicated with the secondary combustion chamber (8), a high-grade fuel channel is arranged outside and is communicated with the secondary combustion chamber (8), and a gas channel is arranged outside and is communicated with the secondary combustion chamber (8), so that the dual-fuel high-temperature heat source is formed.

Description

Dual-fuel high-temperature heat source Technical field: The invention belongs to the technical field of thermal science. The background technology is as follows: The cold demand, the heat demand and the power demand are common in human life and production, wherein fossil fuels, biomass fuels and the like with different qualities are combusted to form a high-temperature heat source, which is a primary link for cold, heat and power production and utilization, and the method reduces irreversible loss of temperature difference in the formation process of the high-temperature heat source, and is a key and primary link for realizing high-efficiency utilization of energy. The fuel has different types and different properties, wherein the temperature of fuel combustion forming fuel gas is directly related with the subsequent production and utilization of cold, heat and power, the high-grade fuel with high constant pressure combustion temperature corresponds to a high-grade heat source, can convert more mechanical energy or realize better refrigeration benefit or provide higher grade heat energy from the view of the temperature of fuel gas formed by combustion (such as constant pressure combustion temperature), and the low-grade fuel with low constant pressure combustion temperature is difficult to form high-temperature combustion products, corresponds to a low-grade heat source, and can convert less mechanical energy or realize lower refrigeration benefit or provide lower grade heat energy from the view of the temperature of fuel gas formed by combustion (such as constant pressure combustion temperature). In addition, due to reasons such as limited working principle or material property or manufacturing level of heat exchange equipment, when a high-grade fuel is adopted to form a high-temperature heat source, the temperature difference between the combustion-supporting medium (such as air) and the constant-pressure combustion temperature of the fuel is large, and large temperature difference irreversible loss exists in the combustion process, so that the quality loss in fuel utilization is caused. Another situation related to the state of the art is that in thermal power plants, coal cannot be used directly as working medium, but rather it is necessary to transfer the high temperature heat load drop into the working medium (e.g. steam) which reduces its thermal work efficiency, compared to different types of fuels, such as high quality coal and natural gas, which are capable of forming sufficiently high combustion temperatures. The invention provides a dual-fuel high-temperature heat source which reasonably matches low-grade fuel with high-grade fuel to realize the complementary advantages and complementary advantages, can simultaneously improve the utilization value of two fuels, reduce the emission of greenhouse gases and effectively reduce the cost of the fuel. The invention comprises the following steps: the invention mainly aims to provide a dual-fuel high-temperature heat source, and the specific summary of the invention is as follows: 1. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler, a heat source regenerator and a second heat source regenerator, wherein a low-grade fuel channel is arranged outside and communicated with the boiler, an air channel is arranged outside and communicated with the boiler through the heat source regenerator, a fuel gas channel is arranged outside and communicated with the outside through the heat source regenerator, a high-grade fuel channel is arranged outside and communicated with the second boiler, an air channel is arranged outside and communicated with the second boiler through the second heat source regenerator and the boiler, a fuel gas channel is arranged outside and communicated with the outside through the second heat source regenerator, and a heated working medium channel is arranged outside and communicated with the second boiler to form the dual-fuel high-temperature heat source. 2. The dual-fuel high-temperature heat source mainly comprises a boiler, a second boiler and a heat source regenerator, wherein a low-grade fuel channel is arranged outside and communicated with the boiler, an air channel is arranged outside and communicated with the heat source regenerator and then is divided into two paths, namely, the first path is directly communicated with the boiler and the second path is communicated with the second boiler through the boiler, a fuel gas channel is also arranged outside and communicated with the outside through the heat source regenerator, a high-grade fuel channel is also arranged outside and communicated with the second boiler, a fuel gas channel is also arranged outside and communicated with the outside through the heat source regenerator, and a heated working medium channel is also arranged outside and is communicated with the second boiler to form the dual-fuel high-temperature heat source. 3. The dual-fuel hi