A drying system for boiler pulverizing system
A pulverizing system and drying system technology, applied in the field of auxiliary systems, can solve problems such as high investment and operation costs, low efficiency, and ineffective effects, and achieve the effects of reducing long-term operating costs, reducing coal consumption, and reducing design difficulty
Active Publication Date: 2016-08-17
DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] To sum up, at present, the medium-speed lignite boilers use the highest possible primary air temperature and primary air rate to solve the drying problem of lignite, but in fact there are problems such as high investment and operation costs, and the effect is not obvious, and the efficiency is low.
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
[0025] The present invention will be further described below in conjunction with specific embodiments and drawings.
[0026] Such as figure 2 As shown, a drying system for boiler pulverizing system, this system is suitable for medium-speed milling pulverizing system, can also be applied to fan milling pulverizing system, including a preheater, the preheater can be a rotary preheater Heater or tube preheater and other preheater forms, as well as the blower connected to the hot air inlet of the pulverizing system through the preheater, and also include the hot primary fan and the air intake between the preheater and the pulverizing system Injection device, and a bypass primary air temperature regulating air pipeline, which connects the blower or hot primary fan to the hot air inlet of the pulverizing system. The hot primary fan is connected with the preheater and the fluid inlet of the ejector, the fluid outlet of the ejector is connected with the hot gas inlet of the pulverizing...
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 drying system for a boiler pulverizing system, and relates to an auxiliary system for a coal-fired boiler pulverizing system, in particular to a drying system of a lignite boiler pulverizing system. The drying system for the boiler pulverizing system comprises a preheater and a blower which is communicated with a hot-air inlet of the pulverizing system through the preheater. The drying system for the boiler pulverizing system further comprises a primary hot-air fan and an injection device which are arranged between the preheater and the pulverizing system. The primary hot-air fan is communicated with fluid inlets of the preheater and the injection device, the fluid outlet of the injection device is communicated with the hot-air inlet of the pulverizing system, and a suction opening of the injection device is communicated with a smoke channel of a boiler at the temperature ranging from 600 DEG C to 900 DEG C. The drying system for the boiler pulverizing system has the advantages of being low in cost, good in effect, high in efficiency, capable of largely reducing design requirements and using requirements of the overall boiler.
Description
Technical field [0001] The invention relates to an auxiliary system for a coal-fired boiler pulverizing system, in particular to the drying of a lignite boiler pulverizing system. Background technique [0002] Lignite boiler pulverizing systems generally require higher drying output. For example, boilers equipped with medium-speed grinding pulverizing systems generally need to increase the primary air temperature to 400℃ and the primary air rate to more than 35%. Therefore, in order to meet the high requirements On the one hand, the coal mill needs to choose a larger model, resulting in increased power consumption; on the other hand, it requires a higher primary air temperature of the boiler design, because the primary air used for drying the pulverizing system is heated by the preheater, and The heat source of the preheater comes from the flue gas temperature after denitration, and if the boiler is designed according to the aforementioned high primary air temperature and primary...
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): F23K1/00F26B21/00
Inventor 潘绍成刘文建何维易广宙朱骅尹朝强
Owner DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP