DZH hand fired steam boiler-Fornitore globale

DZH boiler is a horizontal three return water fire tube boiler. There are rows of water-cooled wall tubes on both sides of the furnace, and two sets of tube bundles are arranged inside the drum to form two return loops. This type of boiler has sufficient heating surfaces and is equipped with tail heating surface economizers. Equipped with drums and induced draft fans for mechanical ventilation. Layered combustion. Coal has a wide adaptability and good smoke reduction effect. Equipped with a medium resistance high-efficiency cyclone dust collector, the smoke and dust emission concentration meets the environmental protection requirements of Class II areas. The smoke passes through the combustion chamber at the upper part of the rear arch, and then upward through the smoke chamber of the rear shed pipe into the pipe bundle and enters the front smoke box

◆ Product Usage:

Industrial sector: Supply of steam for thermal power plants, shipyards, precision instrument manufacturing plants such as petrochemicals, pharmaceuticals, biotechnology, baking and other processes in the food industry; Places in the factory that require hot water.
Life field: steam usage in hotel laundry rooms, steam disinfection of hospital equipment, steam usage in canteens, saunas and beauty salons; Residential areas, schools, office buildings, hotels, and other places that require heating; Hot water supply such as hotel baths.

Performance advantages

This product is mature, progressiveness, stable, reliable and economical.
1. Maturity: One of the earliest manufacturers in China to produce coal-fired quick installation threaded tube boilers; Automated coal-fired threaded tube boiler, filling the gap in domestic coal-fired threaded tube steam boilers; Over the past decade, the product has undergone multiple updates and upgrades, becoming more mature. More than 6000 units of similar products have been produced.
2. Progressiveness: adopt a number of advanced technologies, such as threaded tube, furnace intensive combustion; DZH coal-fired boilers have won multiple product honor certificates from the state and the Ministry of Machinery Industry;
3. Stability: The boiler runs smoothly with a low failure rate and no major safety accidents have occurred; The longest operating time of early boilers has been over 20 years.
4. Reliability: The only boiler manufacturer in China that has undergone 200000 fatigue tests on shell boilers;

Our company is a designated industrial boiler export base for the Ministry of Machinery. Since 2000, oil and gas boilers have been exported to 17 countries including Pakistan, Bangladesh, Myanmar, Thailand, Iran, Algeria, Syria, Nigeria, Kazakhstan, Libya, Guinea, Indonesia, Yemen, Mozambique, Vietnam, Cambodia, and Hong Kong.

5. Economy: High thermal efficiency, fuel saving, good economy; Rated as an energy-saving product by the National Economic and Trade Commission and the Henan Provincial Environmental Protection Bureau.

Technical Parameter

Serial Number	project	unit	Technical parameters
1	model		DZH1-0.7-AII	DZH1-1.0-AII	DZH2-0.7-AII	DZH2-1.25-AII	DZH4-1.25-AII
2	External dimensions	M	3.9×1.85×3.12	3.9×1.85×3.12	4.5×2.24×3.32	4.46×2.24×3.23	5.3×2.44×3.6
3	evaporation capacity	t/h	1.0	1.0	2.0	2.0	4.0
4	Working pressure	Mpa	0.7	1.0	0.7	1.25	1.25
5	Steam temperature	℃	171	184	171	194	194
6	Design thermal efficiency	%	77	77	77	78	78
7	hourly coal consumption	kg/h	119	119	235	235	410
8	Heating surface area of boiler	m2	39.4	43.93	53.6	73.6	146.3
9	grate area	M2	1.9	1.9	3.74	3.74	3.93
10	Combustion method		Artificial coal loading
11	Applicable coal types		Class II bituminous coal	Class II bituminous coal	Class II bituminous coal	Class II bituminous coal	Class II bituminous coal
12	Boiler weight	t	9.2	10.3	12.6	13.2	17.8

Working principle

Boiler steam pressure automatic regulation system: The control system of the boiler steam pressure automatic regulation system enters the working state. When the necessary conditions for combustion are met, the control system outputs a stop signal when the steam pressure in the boiler is higher than or equal to the set upper pressure limit. Until the induced draft fan is stopped.
Water supply self-control: When the system is in operation and working normally, the water supply pump is started to work, and the water level differential pressure transmitter detects the water level signal to maintain the stability of the boiler drum water level. Ensure the quality of steam. The water level regulating instrument displays the boiler water level.
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