Electric converter flue gas waste heat utilization system based on multi-pressure mode
A flue gas waste heat and electric converter technology, which is applied in the steam generation method, furnace, preheating and other directions using heat carrier, can solve the problems of extensive recovery method, no design of heat exchange system, and inability to make full use of flue gas waste heat.
Active Publication Date: 2019-02-19
HUATIAN ENG & TECH CORP MCC
View PDF9 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Since the electric converter is a steelmaking equipment that has emerged in recent years, a complete set of waste heat utilization schemes for the high-temperature flue gas of the electric converter has not yet been formed. thermal system, it cannot make full use of the waste heat of the flue gas
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] Embodiments of the electric converter flue gas waste heat utilization system based on the multi-pressure mode according to the present invention will be described below with reference to the accompanying drawings. Those skilled in the art would recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Also, in this specification, the drawings are not drawn to scale, and like reference numerals denote like parts. It should be noted that the high pressure, medium pressure, and low pressure described in the present invention are named in order to distinguish the pressure levels of the steam-water system (such as: the pressures of high-pressure steam, medium-pressure steam, and low-pressure steam are respectively designed to be 3.83MPa, 1.6MPa , 0.5MPa), n...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a waste heat utilization system of electric converter flue gas based on multi-pressure mode, which includes a first vaporization cooling flue and a second vaporization cooling flue connected sequentially from the flue gas outlet of the water-cooled elbow above the electric converter along the flue gas flow direction. The flue, the combustion settling chamber, the third vaporization cooling flue, the waste heat boiler, and the high-pressure evaporator, high-pressure economizer, medium-pressure evaporator, and medium-pressure economizer in the waste heat boiler are arranged in sequence along the flue gas flow direction. The first vaporization cooling flue and the furnace door of the combustion and settling chamber are cooled by a low-pressure steam-water system, and the water is supplied by the low-pressure drum to generate low-pressure steam; the second vaporization cooling flue, the furnace cover of the combustion and settling chamber, the third vaporization cooling flue, The high-pressure steam-water system is used in the high-pressure section of the waste heat boiler, and the water is supplied by the high-pressure drum to generate high-pressure steam; the medium-pressure steam-water system is used in the medium-pressure section of the waste heat boiler, and the water is supplied by the medium-pressure drum to generate medium-pressure steam. The output steam drives the steam turbine after passing through the heat accumulator and superheater.
Description
technical field [0001] The invention relates to the technical field of energy saving in the iron and steel industry, in particular to an electric converter flue gas waste heat utilization system based on a multi-pressure mode. Background technique [0002] The electric converter is a steelmaking furnace that has been gradually developed and gradually popularized in recent years. The electric converter is not only different from the oxygen top-blown converter, but also different from the DC electric arc furnace. It is a technical combination of the oxygen top-blown converter and the DC electric arc furnace. [0003] In the process of electric converter smelting, a large amount of high-temperature flue gas will be produced (the highest temperature can even reach above 1600°C). These high-temperature flue gases not only take away a large amount of heat energy, but also affect the operation of downstream dust removal equipment, thereby causing environmental pollution problems. ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F27D17/00F22B1/18F22D1/50
CPCF22B1/18F22D1/50F27D17/004F27D2017/006Y02P10/25
Inventor 江文豪王宁山
Owner HUATIAN ENG & TECH CORP MCC