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wood chips boilers, ZOZEN wood chips boilers type introduction

29 Jul 2020

The so-called wood chips boilers refer to the biomass boilers fired by wood chips. Wood chips can be made into particles after crushing, drying, extrusion and other processes, which is a kind of clean fuel that can be directly burned. According to different heat transfer mediums, wood chips boilers can be divided into the wood chips fired steam boilers, wood chips fired hot water boilers, wood chips fired thermal oil heaters and so on. The following is an introduction to several types of ZOZEN wood chips boilers.

1) DZL series wood chips boilers

The DZL series wood chips boilers is a horizontal three-pass water and fire tube chain grate boiler. The boiler proper is a longitudinal single drum in which threaded smoke tubes form the convective heating surface, while the boiler drum and water-cooled walls on both sides form the radiant heating surface of the furnace. The combustion equipment adopts the light chain grate, and the boiler is packaged as a whole for shipment. The electric control can realize stepless speed regulation of grate, limit parameter alarm and interlock protection.

5-1

Boiler Type

Capacity (tph or MW)

Pressure (MPa)

Thermal Efficiency (%)

DZL series wood chips fired steam boiler

2-20tph

1-2.5

≥88%

DZL series wood chips fired water and fire tube hot water boiler

14-70MW

1-1.6

≥88%

2) SZL series wood chips boilers

The SZL series wood chips boilers adopt the packaged or pre-assembled structure. The upper part is the heating surface of the proper, and the lower part is the combustion equipment. The front end of the boiler proper is the water-cooled wall arranged all round. The upper part of the water-cooled wall is connected to the drum and the lower part is connected to the header. The three parts constitute a combustion chamber to absorb the radiant heat from the furnace. At the back end, a dense convection tube bundles area is arranged between the upper and lower drums. The high-temperature flue gas after combustion passes though the cross flow convective heating surface in the second pass and is led to the separate economizer, and finally enters the dust collector and is discharged from the chimney. The 20tph pre-assembled water tube boiler is composed of the front furnace, rear furnace, convection tube bundles, economizer and chain grate, which are respectively assembled as a whole before leaving the factory.

5-2

Boiler Type

Capacity (tph or MW)

Pressure (MPa)

Thermal Efficiency (%)

SZL series wood chips fired steam boiler

4-35t/h

1-2.5

≥88%

SZL series wood chips fired hot water boiler

2.8-29MW

1-1.25

≥88%

3) YLW series wood chips fired organic heat carrier boiler

The YLW series organic heat carrier boiler is the pre-assembled horizontal square coil chain grate boiler. The chain grate and the boiler proper are separated for shipment. After the boiler arrives the construction site, it can be put into operation only by connecting oil and electricity. During the operation, the fuel falls from the hopper to the grate for combustion. The high-temperature flue gas is reflected by the back arch to the front of the furnace and enters the furnace. After the radiant heat exchange by radiant heating surface, it enters the convective heating surface for convective heat exchange, and then it enters the waste heat boiler, air preheater, finally dust collector. After dust removal, the flue gas is drawn by the induced draft fan through the chimney and is discharged to the atmosphere.

5-3

Boiler Type

Capacity (KW)

Pressure (MPa)

Thermal Efficiency (%)

YLW series wood ships fired horizontal thermal oil heater

1400-29000KW

0.8-1

≥85%

 

The various series of wood chips boilers produced by Wuxi ZOZEN Boilers Co., Ltd. have excellent performance and high quality, which benefits from ZOZEN's continuous investment in technology research and development, and ZOZEN's active cooperation with Shanghai Jiaotong University and other scientific research institutes. ZOZEN continuously improves the wood chips boilers performance. ZOZEN wood chips boilers are widely used in heating, chemical, food, tobacco, textile, printing and dyeing, feed, medicine, building materials, brewery, hospital, rubber and other industries, and also are well received by the market. If you have any questions, welcome to inquiry ZOZEN Boiler.

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