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Apparatus used for detecting critical viscosity temperature of Shell gasifier slag

A critical viscosity and slag technology, which is applied in the field of detecting the critical viscosity temperature of shell coal gasifier slag, can solve the problems of lagging, inability to meet the industrial online measurement of slag critical viscosity temperature, troublesome operation, etc., and achieve sensitive response and simple measurement Convenience, easy installation and convenient effect

Inactive Publication Date: 2013-12-25
ZHEJIANG UNIV +1
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  • Description
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Problems solved by technology

The viscosity curve method obtains the critical viscosity temperature by measuring the viscosity-temperature curve of the slag in a specific high-temperature viscometer. It has the advantage of high accuracy, but its disadvantages are also quite obvious. Critical viscosity temperature requirements

Method used

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  • Apparatus used for detecting critical viscosity temperature of Shell gasifier slag
  • Apparatus used for detecting critical viscosity temperature of Shell gasifier slag
  • Apparatus used for detecting critical viscosity temperature of Shell gasifier slag

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Embodiment Construction

[0020] Such as figure 1 Shown, a Shell coal gasifier, the main structure of the device is the same as the fuel gasification device disclosed in Chinese patent 200580039681.1, it includes a pressure shell 1, the shape of the pressure shell 1 is roughly elliptical in longitudinal section, and its internal air pressure is 7 to 70 bar, with a discharge port 18 at the bottom for discharging slag and water.

[0021] The pressure shell 1 is provided with a gasification chamber 2 surrounded by a gasifier wall 4. The gasifier wall 4 is a membrane wall structure for circulating cooling fluid. The membrane wall structure is composed of a plurality of horizontally arranged annular tubes . A burner (not shown in the figure) is arranged above the gasification chamber 2, and four nozzles 12 are arranged inside it, and the nozzles 12 mainly deliver raw materials to the gasification chamber, and the raw materials mainly include water vapor, oxygen and coal powder.

[0022] The bottom of the ...

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Abstract

The invention discloses a method and an apparatus used for detecting critical viscosity temperature of Shell gasifier slag. The Shell coal gasifier comprises a pressure shell; a gasification chamber is formed by a gasifier wall, and is arranged in the pressure shell. The method comprises following step: the temperature of slag is determined; vibration signals sent by the gasifier wall are received and are subjected to two-order Daubechies wavelet decomposition, a wavelet frequency segment with a Hurst value less than 0.5 is selected as the characteristic frequency segment; and a relation curve representing the relationship of the change of energy resolution Rs of the characteristic frequency segment and the temperature of slag is discussed. When Rs decreases rapidly and begins to approach zero, the corresponding temperature in the relation curve is the critical viscosity temperature of Shell gasifier slag. According to the method of the invention, it does not need to prepare another vibration source, the vibration signals are generated by fluid in transporting processes, the method is safe and is friendly to the environment, detection is simple and convenient, and detection error is small.

Description

[0001] The present invention is a divisional application with the filing date of "December 15, 2010", the application number of "201010588856.7", and the title of the invention "A Method and Device for Detecting the Critical Viscosity Temperature of Shell Gasifier Slag". technical field [0002] The invention relates to the technical field of coal gasification, in particular to a device for detecting the critical viscosity temperature of Shell coal gasification furnace slag. Background technique [0003] Entrained bed gasifier has attracted people's attention because of its wide adaptability to coal types, high carbon conversion rate, effective gas content and cold gas efficiency, and has become the preferred technology for coal gasification. Shell coal gasifier (CN101885989A ) is one of the representative furnace types. [0004] As an important operating parameter in the gasifier, the critical viscosity temperature is a core point for judging the slag flow effect of the gas...

Claims

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Application Information

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IPC IPC(8): G01N25/04
Inventor 王靖岱汪兵宋迪黄正梁蒋斌波阳永荣楼佳明叶健朱子川王方
Owner ZHEJIANG UNIV
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