Shell and tube waste heat boiler

NegotiableUpdate on 08/18

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Shell and tube waste heat boilers are suitable for the chemical and petroleum industries to recover process medium waste heat. As the waste heat source is a process medium with a certain pressure, and the pressure of the process medium is often relatively high. The structure of a shell and tube waste heat boiler is similar to that of a pressure vessel, and is generally included in the process flow. As one of the process devices, its design calculation is generally carried out according to the pressure vessel specifications. Therefore, the shell and tube waste heat boiler is classified as a pressure vessel. The design and recovery of shell and tube waste heat boilers are receiving increasing attention from relevant parties. This is partly due to the necessity of fully recycling and utilizing energy, and more importantly, with the rapid development of the national economy, environmental protection is increasingly being valued. The demand for energy is increasing day by day, and the issue of how to effectively utilize the exhaust and waste gas emitted by a large number of chemical enterprises is gradually being emphasized. Shell and tube waste heat boilers have the advantages of simple structure and convenient manufacturing.

Product Details

Working principle

A waste heat boiler, as the name suggests, refers to a boiler that uses the heat generated by the combustion of waste heat and combustible substances in various industrial processes to heat water to a certain working medium. In fact, energy conservation is one of the key factors for a country to achieve sustainable development. The consumption of industrial energy in China accounts for the largest share of the overall cost, while the effective utilization rate of energy is only about 30%. Considering economic benefits, the promotion of energy-saving equipment is an essential measure. At present, the design and development of domestic waste heat energy-saving boilers have gradually matured.

Shell and tube waste heat boiler is an auxiliary equipment that comprehensively utilizes the waste heat of industrial furnaces. It absorbs the waste heat (or waste heat) from the discharged flue gas to produce steam and reduce the temperature of the flue gas.

Performance characteristics

1. High heat transfer coefficient, good performance of shell and tube waste heat boiler, compact equipment, small volume, low cost of shell and tube waste heat boiler, and small installation space.

2. By adjusting the heat transfer area between the cold and hot media according to the specific operating conditions of the equipment, the surface temperature distribution of the heat transfer elements can be changed, successfully avoiding low-temperature acid dew point corrosion.

3. Two types of media are used to achieve secondary wall heat transfer, and the fluids are not in series with each other. If one or more heat pipes are damaged, it does not affect the continuous and stable operation of the equipment.

4. Both media pass through the outside of the heat pipe, with a single return operation and low medium resistance.

5. According to the characteristics of the flue gas, adjust the medium flow rate reasonably to achieve a self-cleaning shell and tube waste heat boiler when the medium passes through the surface of the heat pipe, without scaling or blockage.

6. The minimum temperature difference required for heat transfer between media is small, which can achieve low-temperature recovery of waste heat.

7. The heat pipe is fixed at a single point on the inner cylinder wall (steam drum) and freely suspended in the flue gas channel, with unrestricted thermal expansion and contraction, no stress damage, and a long service life.

Type

project			unit	WNS series
Boiler proper	rated evaporation		t/h	2	3	4	6	8	10	12	15	20
	Rated steam pressure		Mpa	1.25
	Rated steam temperature		℃	193
	Design thermal efficiency		%	≥102%
	Boiler water capacity		t	6.1	7.3	9.2	10.2	15.3	17.9	21.1	24.1	34.9
	combustion method			Micro positive pressure chamber combustion
	Combustion regulation method			Fully automatic two-stage fire/variable frequency proportional adjustment
burner	fuel			natural gas
	Natural gas consumption		Nm³/h	138	207	276	415	553	692	830	1038	1384
	Natural gas supply pressure		pa	8000-20000
power consumption	Use power supply			380v/50hz
	Total electrical power of the equipment		kw	10	14.3	15.3	24.5	28.5	42	43.2	53	90
	Electric power of water supply pump		kw	2.2	3	3	5.5	7.5	11	11	15	15
	Wind turbine power		kw	7.5	11	11	15	22	30	30	37	75
air preheater	form			Vacuum heat pipe type
	model			KYQ2	LNQ3	LNQ4	LNQ6	LNQ8	LNQ10	LNQ12	LNQ15	LNQ20
	Product weight		kg	150	370	380	457	519	580	603	690	712
condenser	form			Finned tube type
condenser	model			LNQ2	LNQ3	LNQ4	LNQ6	LNQ8	LNQ10	LNQ12	LNQ15	LNQ20
Link size	Product weight		kg	501	611	795	902	1125	1520	1610	1920	2150
	Water supply port	DN	mm	32	40	50					65	80
	Main steam valve	DN	mm	65	80	100	125	150			200
	Auxiliary steam valve	DN	mm	40
	Discharge outlet	DN	mm	50*1		50*2			50*3
	safety valve	interface	mm	40*2	50*2		80*2					100*2
		Pool opening	mm	40*2	50*2		80*2					100*2
		Pool opening	mm	50		50*2
Transport dimensions	long		mm	4500	5000	5500	6650	7300	7600	7820	8600	8900
	wide		mm	2150	2200	2345	2632	2420	2650	2698	3600	3661
	tall		mm	2891	3066	3132	3466	2930	3190	3178	3600	3661
	Transport weight		t	7.9	10.7	12.7	16.1	19.1	23.6	28.4	31.2	42.8
	Smoke outlet size		mm	320*450	450*560	450*690	500*690	400*850	650*900	650*900	850*950	800*1200