Accurate self-preheating type safety energy-saving heat storage combustion system and method

A regenerative combustion and self-preheating technology, applied in the direction of combustion method, burner, combustion type, etc., can solve the problems of insufficient utilization of flue gas, difficulties in high-grade electric energy of combustion technology, and heat loss of flue gas, so as to improve energy Utilization efficiency, providing energy utilization, and reducing heat emission

Pending Publication Date: 2019-03-26
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The power generation part makes good use of the advantages of the screw expander. However, the circulating water part does not make full use of the waste heat of the flue gas, which causes the energy loss of the low calorific value gas with low energy density and reduces the energy utilization efficiency.
At the same time, the heat loss of the flue gas will lead to seri

Method used

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  • Accurate self-preheating type safety energy-saving heat storage combustion system and method

Examples

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Example Embodiment

[0037] Example 1

[0038] This embodiment provides a precise self-preheating safe and energy-saving heat storage combustion system, including a porous medium burner, a Stirling generator, an intake pipe, an exhaust pipe, and a combined heat, power, and cooling system;

[0039] A gas preheating device is arranged between the intake pipe and the porous medium burner, and the gas preheating device includes a heat exchange tube, a preheating pipe, a thermometer, and an external heat engine. The intake pipe, the heat exchange pipe, and the preheating pipe are connected in sequence The heat exchange tube is arranged in the middle of the porous burner, the air inlet pipe and the preheating tube are arranged outside the porous burner, and the thermometer is arranged on the preheating tube to detect the temperature of the gas before passing through the external heat engine. The tail end of the preheating pipe is connected with the bottom end of the porous medium burner;

[0040] The porous m...

Example Embodiment

[0042] Example 2:

[0043] The precise self-preheating safe and energy-saving regenerative combustion system provided in Example 2 is an optimized solution based on Example 1. The precise self-preheating safe and energy-saving regenerative combustion system provided in Example 2 also includes A gas monitoring system, the gas monitoring system includes a wireless intelligent terminal, a control valve connected to the intake pipe and a computer, the control valve is connected to the first port of the computer through a signal line, and the igniter is connected to the second port of the computer through a signal line , The igniter is arranged at the lower part of the burnt gas of the porous medium, the methane sensor is connected to the third port of the computer through a signal line, and the wireless intelligent terminal is communicatively connected to the computer.

[0044] The precise self-preheating safe and energy-saving regenerative combustion system provided in Example 2 can n...

Example Embodiment

[0045] Example 3:

[0046] The precise self-preheating safe and energy-saving regenerative combustion system provided in Example 3 is an optimized solution based on Example 1 or Example 2. The precise self-preheating and energy-saving regenerative combustion system provided in Example 3 The system includes a steam power machine, a generator connected to the right end of the steam power machine, an absorption refrigerator and a heat exchanger connected to the lower end of the steam power machine.

[0047] The outer layer of the porous medium burner and the preheating pipe are both covered with a heat insulation layer, and the exhaust pipe is also covered with a heat insulation layer except for the pipe wound on the porous medium burner. The heat insulation layer is one of asbestos heat insulation layer, vacuum heat insulation layer or aerogel felt heat insulation layer, but is not limited to asbestos heat insulation layer, vacuum heat insulation layer or aerogel felt heat insulation...

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Abstract

The invention discloses an accurate self-preheating type safety energy-saving heat storage combustion system. The system mainly comprises a gas preheating device, a gas inlet device, an exhaust device, a gas monitoring system, a porous medium burner and a CCHP system, wherein the gas inlet device and the exhaust device are connected with the left end and the right end of the gas preheating deviceseparately; the porous medium burner is connected with a stirling generator; and the CCHP system is connected with the exhaust device. Low-heating-value gas like mine low-concentration gas and low-concentration natural gas burns in porous media, burning heating enters the stirling generator to generate power, and waste heat is used for secondary power generation, refrigeration and heating througha steam power machine; in addition, the system has the real-time gas monitoring function, and responses to problems of the gas leakage, overproof gas concentration and the like in time; the system further has the accurate self-preheating function, and preheats the gas in advance, so that the temperature achieves the initial requirement; and the system and method are convenient to operate, save energy, and are environmentally friendly, good in effect and high in safety performance.

Description

technical field [0001] The invention relates to the technical field of combustion systems, in particular to a precise self-preheating type safety and energy-saving heat storage combustion system and method. Background technique [0002] Regenerative combustion technology in porous media is a new combustion technology developed in recent decades. Compared with traditional combustion technology, it has good stability, high combustion efficiency, high combustion intensity, low pollutant emission, and load adjustment range. Wide, wide lean burn limit and other advantages. Porous media with high porosity has great thermal conductivity, thermal radiation, specific surface area, and heat capacity, so it has unique advantages in realizing rapid heat transfer between premixed gas and porous media, and between combustion products and porous media. Coal mine low-concentration methane gas, low-concentration natural gas, landfill gas, etc. are typical low calorific value gases, which ar...

Claims

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Application Information

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IPC IPC(8): F23G7/06F23G5/02F23G5/08F23G5/46F23G5/50F23D14/12
CPCF23G7/061F23D14/12F23G5/02F23G5/08F23G5/46F23G5/50F23G2206/20F23G2900/50213
Inventor 代华明杨攀陈先锋赵齐尹姝慧王晓彤董智桥
Owner WUHAN UNIV OF TECH
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