Sulphuric acid dew point monitoring analyzer

Abstract

The invention relates to a sulphuric acid dew point monitoring analyzer which comprises a main control board arranged in a mainframe box, a signal magnification unit, a frequency generator and a main power supply, wherein the signal magnification unit is connected with a sensor by a signal wire. The front end of the sensor is provided with a casing, the middle part of the front end is provided with a platinum ring in which a platinum-rhodium-platinum thermocouple is arranged, the signal magnification unit is connected with the main control board, the mainframe box is provided with a thermometer and an ammeter which are connected with the main control board by the signal wire, the center of the sensor is provided with a cooling air passage communicated with an outer cooling air inlet on themainframe box, and the mainframe box is provided with a power supply switch, a main control keyboard, a display screen, an output unit and a cooling air adjusting valve. When in detection, the cooling air of the cooling air inlet is adjusted, the sensor is arranged in a flue, and acid substances on the inner surface layer of the sensor starts to deposit on the outer surface. When the current is steady, the temperature measured by the sensitive end of the platinum thermocouple is an acid dew point in flue gas. The invention has accurate measurement and simple operation.

Description

Technical field [0001] The invention relates to an acidic substance dew point monitoring and analyzing instrument, in particular to a sulfuric acid dew point monitoring and analyzing instrument for detecting equipment such as exhaust gas preheaters, air preheaters, induced draft fans, flue walls and the like. It belongs to the field of environmental monitoring technology. Background technique [0002] With the popularization of the scientific concept of development, energy conservation and emission reduction have become the top priority of all enterprises. However, quite a few working conditions are still facing serious impacts of environmental pollution and equipment damage. Such as exhaust gas preheater, air preheater, induced draft fan, flue wall, coal boiler, fuel backup system, SO 3 The operating conditions of the delivery system, MgO delivery system, furnace emission acid plant, fertilizer plant, etc. are all faced with when sulfur-containing fuel is burned, sulfur will be ...

AI Technical Summary

Problems solved by technology

[0002] With the popularization of the concept of scientific development concept, energy saving and emission reduction has become the top priority of all enterprises. However, quite a few working conditions are still facing the serious impact of environmental pollution and equipment damage.

Such as exhaust gas preheater, air preheater, induced draft fan, flue wall, coal boiler, fuel backup system, SO 3 Dosing system, MgO dosing system, furnace discharge acid plant, fertilizer plant and other working conditions are faced with the problem that when sulfur-containing fuel is burned, sulfur will be oxidized to produce SO 2 , part of which SO 2 is further oxidized to SO 3 , SO 3 Combined with the water in the process gas, sulfuric acid will be generated. The generation of sulfuric acid will directly affect the long-term operation and production efficiency of the factory equipment, which will greatly increase the cost of production and maintenance. In addition, the generation of sulfuric acid will also cause acid soot emissions, which are harmful to the environment. create pollution

In the existing technology, the industrial site often calculates the acid dew point according to the theoretical formula, but due to the process changes, flow rate, dust, temperature, and flow rate changes, the temperature of SO3 condensation cannot be really known, which will eventually cause equipment corrosion and increase operating costs.

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