New Patent for Low Pressure Circulating Fluidized Bed Power Plant Boiler

NegotiableUpdate on 05/27

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Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The patented new circulating fluidized bed boiler is a natural circulation circulating fluidized bed steam boiler. This product is a circulating fluidized bed boiler developed by the Zhengzhou Circulating Fluidized Bed Boiler Research Institute of Tsinghua University using the latest technological achievements of Tsinghua University. Due to the adoption of the latest advanced and mature circulating bed technology, boiler membrane wall heating surface structure, and longitudinal flushing structure of convection tube bundles, the overall boiler is more reliable, with simple and compact layout. The boiler body consists of a coal feeding device, combustion equipment, water cooling system, high-temperature cyclone separator, economizer, steel frame, escalator, furnace wall, etc. The adaptability of boiler coal types is wide. Not only can smokeless coal, bituminous coal, lignite, and lean coal be used, but also inferior fuels such as coal gangue, gasification slag, and chain slag can be used. Waste slag can be comprehensively utilized, and the carbon content of slag is generally below 2%. Due to the use of low-temperature combustion technology, this product effectively reduces the generation of harmful gases, and NOx emissions can meet the requirements of GB13271 emission standard 200mg/m3 without the use of denitrification equipment.

Product Details

1. The boiler adopts a fully steel floor standing structure, which greatly saves the basic civil engineering investment of the boiler. The boiler has a very low thermal inertia and a fast boost time.
2. The hanging membrane fireplace chamber adopts a reliable avoidance, tight sealing, and best heat transfer effect full mode wall lightweight attached tube furnace wall structure.
3. The supported lower fluidized bed adopts a tightly sealed and structurally simple all steel shell medium-sized furnace structure.
4. The upper furnace and lower non fluidized bed are reliably connected and sealed using an expansion and contraction structure.
5. Heat resistant alloy cast steel cylindrical embedded Nieliu wind cap does not leak dust, does not seal evenly, and has a long service life.
6. The most reliable and mature dual cyclone adiabatic separator is combined with a membrane wall water-cooled shed and a directional smoke chamber structure with a membrane wall water-cooled shed.
7. The double drum multi pass longitudinal flushing of the convection tube bundle eliminates the clogging and wear of the convection tube bundle in circulating fluidized bed boilers.

Design parameters

Product Introduction

Structural characteristics

1. Wide adaptability to combustion. External circulating fluidized bed boilers can burn both high-quality coal and various low-quality coal. And the combustion technology is environmentally friendly.
2. The material system is simple and the combustion efficiency is high. High temperature materials are carried by the airflow and enter the collector. The collected waste enters the return feeder and is then sent back to the combustion chamber for multiple cycles of combustion, resulting in high combustion efficiency.
3. Large load adjustment range and fast load adjustment. And a buried heating surface is arranged inside the bed.

FEATURES

The patented new circulating fluidized bed boiler is a natural circulation circulating fluidized bed steam boiler. This product is a patent only belonging to Zhengzhou Zhongding Co., Ltd. examined and established by the China National Intellectual Property Administration in accordance with the Patent Law of the People's Republic of China. The patent number isZL2012 2 0333591.

1The boiler adopts a fully steel floor standing structure, greatly saving the investment in boiler foundation civil engineering. The boiler has low thermal inertia and fast pressure boosting and gas supply time.2The hanging membrane fireplace chamber adopts a reliable avoidance, tightly sealed, and best heat transfer effect full membrane wall lightweight attached tube furnace wall structure.3The supported lower fluidized bed adopts a tightly sealed and structurally simple all steel shell medium-sized furnace wall structure.4The upper furnace and lower fluidized bed are reliably connected and sealed using an expansion and contraction structure.5Heat resistant alloy cast steel column embedded with reverse flow air cap ensures no dust leakage, uniform air distribution, and long service life.

6The most reliable and mature dual cyclone adiabatic separator is combined with a membrane wall water-cooled ceiling and a turning smoke chamber structure with a membrane wall water-cooled ceiling.7Efficient and mature dualUType return valve structure.