Waste heat boiler
A technology for waste heat boilers and boiler shells, applied in air heaters, fluid heaters, energy-saving heating/cooling, etc., can solve problems such as aggravated soot accumulation, over-burning accidents, and rise in boiler exhaust smoke temperature, so as to improve load fluctuations Adaptability, eliminate low-temperature corrosion, and improve the effect of flue gas temperature
Inactive Publication Date: 2009-12-23
余传林 +1
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to the soot accumulation of the transverse finned tubes, the heating surface of the boiler is further reduced, resulting in an increase in the exhaust gas temperature of the boiler
Although boiler soot deposits can be treated with air cannon soot blowers or steam soot blowers, both of them directly aggravate the combination of corrosive components and water vapor in the flue gas, increase the dew point of the flue gas, and make the boiler work at a higher temperature. Corrosion begins at low temperature; at the same time, due to the aggravation of soot accumulation due to soot blowing, coupled with the action of water vapor, the soot deposit is more difficult to remove
[0003] When fire tube boilers are used as waste heat boilers, there are mainly the following problems: First, because of the single-drum structure, it is difficult to determine the highest fire boundary of the boiler, resulting in large fluctuations in the operating liquid level of the boiler, and the water volume of the single-drum waste heat boiler Smaller, once a sudden power failure or other improper operation, it may cause an over-burning accident, which is not conducive to the safe operation of the boiler; secondly, in order to arrange enough boiler heating surfaces for a single-drum waste heat boiler, the drum must be made large enough to consume steel The technological process becomes complicated as the volume increases; if a double-drum fire-tube boiler is used as the waste heat boiler, the ascending and descending connecting pipes between the two drums are placed externally, which makes the boiler bulky, the system is complex, and the boiler’s operating life is short. It is not conducive to the safe and reliable operation of the drum
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
[0032] Such as figure 1 , 6 , 9 and 10 shown in a double drum vertical waste heat boiler. The lower drum is a heat exchanger without a boiler heating surface, the upper drum is a gap-type steam-water separator, and the upper and lower drums are connected by pipes, one of which is a waist-shaped man-through hole (waist round hole), and the other is a built-in type. Soda outlet pipe (rise pipe) and / or a built-in downpipe. The specific number of ascending pipes and descending pipes is determined by calculating the boiler output according to the characteristics of the boiler flue gas.
[0033] The lower drum adopts convex tube sheet, arched tube sheet and / or flat tube sheet, and the smoke pipe is threaded smoke pipe. In order to prevent the occurrence of cracks at the pipe end on the inlet side, measures such as expanding first and then welding, opening the welding groove on the tube plate, installing heat-insulating sleeves at the pipe end to prolong the service life of the b...
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 boiler. It includes boiler barrel, tube plate, and fire tube. Its features are as follows: its structure is double boiler barrels; the lower is heat exchanger; the upper is gaping type steam separator; and they are combined together; the lower is set the tube plate; and the tube plate is connected to the fire tube. It has the advantages of simple structure, safe running, no corrosion, and high heat efficiency. And it can be used in waste heat reclaiming device in metallurgy and chemical industry.
Description
technical field [0001] The invention relates to the recycling of waste heat produced by burning dangerous waste gas and waste liquid in industries such as chemical industry, oil refining and metallurgy, and belongs to a waste heat boiler. Background technique [0002] Dangerous waste gas and boiler flue gas produced by the combustion of waste liquid in chemical, oil refining, metallurgy and other industries contain corrosive components, coupled with the characteristics of dust and water vapor, it is easy to form flue gas corrosion. In the prior art, to recover the waste heat, there are not only water tube boilers or fire tube boilers, but also double-drum boilers as waste heat boilers. Water tube boilers are used as waste heat boilers. Since some of the convection tube bundles use bare tubes and / or some transverse finned tubes are used as heating surfaces, the flue gas circulation velocity is relatively small. Running below half load, this makes the flue gas flow rate of th...
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): F24H8/00
CPCY02B30/102Y02B30/00Y02P20/10
Inventor 余传林王军李超蔡德生曹威茅春德庄宇刚何成国
Owner 余传林