First, pulse soot blowing type: using high speed jet gas flow at the top of the filter bag, blowing inside the filter pocket, the formation of air wave, make the expansion of the filter bag is produced by down sharply and shock vibration, produce strong clear the role of falling dust. There are three main types of spray type, reverse jet type and spray type. The effect of pulsed clear ash is stronger, and the cleaning effect is better, and the filter wind speed can be improved. It is a good way to clean ash.
Second, gas cleaning method: using high pressure gas or external atmospheric anti-blowing filter bag to vibrate and remove the ash on the filter bag. This method includes three kinds of anti-blowing ash/pulsed ash blowing and anti-suction air cleaning. One of the most commonly used is the blowing ash removal way, he is using the atmosphere or the fan discharge duct suction gas to form a reverse flow, use reverse wind speed and vibration, to make the sedimentary layer of powder dust fall off.
purpose
The Venturi Tube (Venturi tube) is divided into the built-in Venturi tube and the inserted Venturi tube according to the structure. Good results have been achieved in the measurement of combustion support, cold wind, gas measurement (blast furnace gas, coke oven gas, converter gas) and boiler primary air, two wind pipe diameter and low flow velocity in the hot blast stove of iron and steel plant. To solve the problems of accurate measurement of various types of gas flow at low pressure, large diameter and low flow rate in existing industrial enterprises. A fluid measuring device with wide measuring range and convenient installation. The unique structural design and data processing methods are based on strict fluid mechanics and are calibrated in the national key wind tunnel laboratory.
It can be widely used in the control and measurement of large diameter fluid in petroleum, chemical, metallurgical and power industries.
Characteristic
(1) the resistance to fluid is small, about 150Pa, so energy consumption is low.
(2) the pressure difference is big, the precision is high, and the measuring range is wide.
(3) good stability and smooth differential pressure.
(4) wide range of application. General gas, flue gas, and blast furnace gas with more impurities will not be blocked for long term use.
(5) easy to install and easy to maintain for a long time.
(6) the front and rear straight sections are shorter than the standard throttling devices, about 1D 1.5D before.
(7) online temperature and pressure self correction integrated structure.
Venturi Tube
Botou Youjian Environmental Protection Equipment Co. LTD. , http://www.btdustmachine.com