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Automatic system for surveillance of coal dust supply to coal furnaces

A technology of pulverized coal and coal furnace, which is applied in the field of monitoring and balancing the supply of pulverized coal to the coal furnace, and can solve problems such as constant monitoring and automatic control of unsuitable pulverized coal

Inactive Publication Date: 2006-04-12
MARK & WEDELL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not suitable for constant monitoring and automatic control of pulverized coal supply

Method used

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  • Automatic system for surveillance of coal dust supply to coal furnaces
  • Automatic system for surveillance of coal dust supply to coal furnaces
  • Automatic system for surveillance of coal dust supply to coal furnaces

Examples

Experimental program
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Embodiment Construction

[0019] The channel 1 for the gas-borne pulverized coal of the coal furnace burner (not shown) in the direction of the arrow 2 is provided with a collector 3 having a suction for the collection or sample collection of the pulverized coal from the channel 1 Orifice 4. The right angle gear 6 used to rotate the collector 3 is centrally installed in the pipe on the innermost end of the common pipe 7, the common pipe 7 is used to transport the drive unit for driving the right angle gear 6 and the The suction orifice 8 is connected to the collector 3 . Upstream of the common pipe 7, a shield plate 9 is arranged as a wear part for protecting the common pipe and the collector in the illustrated position, ie in the non-operating position between sample collection cycles.

[0020] The collector 3 , the common pipe 7 and possibly the shielding plate 9 form a mounting unit which is passed completely through and fixed in a so-called dust-free connection 11 fastened in the conveyor pipe wal...

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PUM

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Abstract

In a method for the surveillance and balancing of the coal dust supply through channels (1) to coal furnaces, and which is characterized in that a data processing is carried out on the basis of results of automatic sample collections of coal dust particles conveyed by air current (2) in circular channels (1) from a coal crusher to a coal furnace, said data are processed (17) for generating control parameters for a cross section area regulating draught control unit (18) in each of the respective channels (1), and that each of said control parameters is adapted to control the respective draught control unit (18) for changing the cross section of the channel in question (1) with such size and in such a direction that possible differences in the coal dust conveyance of the channels are completely or partly reduced. Thereby is achieved that a completely or practically constant surveillance and balancing of the coal dust supply in two or more channel to a coal furnace can be made automatically with a resulting reduced emission and / or an improved fuel economy. The invention also relates to a collector and a draught control unit for carrying out the method.

Description

technical field [0001] The invention relates to a method of the kind mentioned in the preamble of claim 1 for monitoring and balancing the supply of pulverized coal to a coal furnace; and a collector and a horizontal Sectional regulation ventilation control unit. Background technique [0002] So far, such methods have not been fully realized automatically, but have been the aim of comprehensive research without practically achievable results. [0003] A collector and its associated sample collection device are known from Danish Patent No. 172643, US-PS 4.479.393 and US-PS 4.442.720. However, it is not suitable for constant monitoring and automatic control of pulverized coal supply. Contents of the invention [0004] The object of the present invention is to provide a method of the above-mentioned kind, whereby samples can be collected in a known manner and according to ISO 9931 etc., and the supply of pulverized coal in two or more delivery pipes to the coal furnace is c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/02G01N1/10G01N1/20G01N1/22
CPCG01N2001/2223G01N2001/1018G01N1/2202G01N1/2035G01N1/2247G01N2001/2092F23K2203/104F23K2203/201
Inventor 安德斯·S·韦德尔
Owner MARK & WEDELL