One. Working principle:
The dust remover is composed of a hopper, on the box, in the box and a lower box part, and the box section structure. When the dust laden gas into the hopper by the air inlet duct, coarse dust particles directly into the bottom of the ash bucket, fine dust particles with the air flow turning upward into the middle and lower box, dust deposition on the surface of the filter bag, the gas after filtered into the box on the net to set gas pipe exhaust duct, the exhaust fan to exhaust the atmosphere.
The cleaning process is to cut off the air outlet duct of the room first, so that the bag of the chamber is in a state of no air flow through the air passage. Then open the pulse valve with compressed air pulse jet cleaning, shut-off valve closing time to ensure in the blowing dust bag after stripped from the settlement to avoid the dust in the hopper, and then with the air from the surface of the filter bag attached to adjacent set bag surface phenomenon, make the bag cleaning thoroughly, and the programmable program control instrument on the valve and exhaust valve, pulse discharging valve and automatic control of the whole.
Two. Characteristics:
1, the dust collector with room blowing pulse jet cleaning technology, overcomes the pulse dust remover and sectional reverse blow duster shortcomings, strong cleaning ability, high dust removal efficiency, low emissions, small air leakage rate, less energy consumption, less steel consumption, small occupation area, stable operation can be rely on the good economic benefit. For the metallurgical, building materials, cement, machinery, chemical, electric power, light industry, the dust containing gas purification and recycling of materials.
2, the room air stop pulse blowing ash, blowing up to a thorough cleaning, so the cleaning cycle is prolonged, reduce ash consumption, gas consumption can be greatly reduced. At the same time, the degree of fatigue bag and pulse valve also decreases correspondingly, thus greatly improving the life of the valve and the filter bag.
3, overhaul of the bag can be in the system of fan, the normal operating conditions of the system sub room. Filter bag opening using elastic ring, good sealing performance, stable and reliable. The bag keel for the use of polygon, reduces friction and prolong the keel of the bag, the bag of life, and is convenient for unloading bags.
4, the upper oil bag, bag change is removed from the skeleton, dirty bag into the lower part of the box body is taken from the hopper, Kong Chu, to improve the operating conditions for bags.
5, adopting the air tightness design, good sealing performance, excellent sealing material used to check the door, in the process of making kerosene leak, leakage rate is very low.
6, inlet, outlet duct layout is compact, small airflow resistance.
Three, series design:
1, long bag pulse filter bag according to different diameter, different layout, each room bag filter area, divided into three different series, with room for units into a row, divided into single permutation and double arrangement. A. single row, bag size 130X6000. Pulse jet pressure can be low pressure (0.2-0.3Mpa), can also be high pressure (0.4-0.5Mpa), by the user selection. B. only double row layout, the bag size is 130X6000. Pulse jet pressure is generally designed as low pressure (0.2-0.3Mpa). C. only double row layout, the bag size is 160X6000. Pulse jet pressure is high pressure (0.4-0.5Mpa). If the user has special requirements, can also design special type according to the user's opinion.
2, dust collector inlet dust concentration is generally allowed to be below 50g/Nm3, if there are special requirements, can be designed according to user requirements.
Four. Selection of dust collector:
1 choice of filtration speed
The filtration rate is the key factor of precipitator, should be based on the properties and applications of soot or dust, dust particle size, viscosity, gas temperature, moisture content, dust concentration and other factors to determine the different media.
When the dust particle size is fine, the temperature and humidity are higher, the concentration is bigger, the viscosity is bigger. If less than 1m/min; and the optional high value, generally not more than 1.5m/min. For dust particle size is very large, at room temperature, dry, non sticky, and the concentration is very low, it is optional 1.5 ~ 2m/min.
Filtering speed, should be calculated in the reduction of a room (cleaning) when the filter area of the filter is not more than the value of the wind speed.
2 filter material
According to the temperature, moisture content, acid, alkali property, the viscosity of the dust, the concentration of the dust, and the size of the ground, the size of the dust containing gas should be considered.
In general, small water content, no acid according to the dust gas temperature to choose, normal or smaller than 130 DEG C, 500 ~ 550g/m2 polyester needle felt. <250 C, the Mexes Nobel aramid needle felt or 800g/m2 or 800g/m2 glass fiber needled felt double weft fabric or fiberglass, FMS, FMS (high temperature filtration of fluorine gas can not be used for the glass material).
When a large amount of moisture, dust concentration and large, should use waterproof, anti oil filter (or anti condensation filter) or membrane filter material (fabric should be waterproof treatment of the needle). When the dust laden gas containing acid, alkaline and gas temperature less than 190 DEG C, often choose laitong (Ryton PPS) needle felt. The gas temperature is less than or equal to 240 DEG C, acid and alkali resistance requirements are not too high, choose P84 (polyimide) needle felt.
When the dust laden gas is flammable and explosive gas, selection of antistatic polyester needle felt, when the dust laden gas has some water for flammable and explosive gas, selection of waterproof and oil proof anti-static polyester needle felt (three).
3 control instrument, long bag pulse dust cleaning control using PLC microcomputer program control, automatic control, timing (automatic), manual three control methods.
Constant pressure control: according to the setting pressure control, the dust collector pressure exceeds the set value, each room automatically in turn clear again. Timing control: according to the set time, every one of the cleaning cycle, the room in order to clean it again.
Manual control: in the field operation cabinet can be controlled manually
