专利摘要:
1. A method of cleaning multi-chamber bag filters by supplying purge inert gas to one of the chambers that are turned off from the filtering process in the opposite direction to filtration, characterized in that, in order to increase the efficiency of the method by reducing the consumption of inert pelvis, before supplying purge inert gas, some of the chambers under the filter element are filled with inert gas. CO with with about 00 with
公开号:SU1109039A3
申请号:SU802889599
申请日:1980-02-28
公开日:1984-08-15
发明作者:Ремилье Жан
申请人:Эр Эндюстри (Фирма);
IPC主号:
专利说明:

2. A method according to claim 1, characterized in that an additional stream of inert gas is fed in countercurrent into the chamber after the purging of inert gas is supplied.
3. A device for cleaning multi-chamber bag filters comprising a housing including filter chambers, each of which is provided with at least one bag filter element
with the outer surface of the filter, exhaust chambers connected
through valves with a collecting chamber and through valves with a purge manifold for supplying a purge inert gas, an inlet chamber common to all filter chambers, with an inlet pipe and a chamber for settled dust, characterized in that, in order to prevent an explosion hazard and to save purge inert gas The device is additionally provided with a manifold for supplying an inert gas interconnected through a stop valve with each outlet chamber.
The invention relates to filtering, in particular to filtering devices with several chambers, where bag filters are installed, and methods of cleaning bag filters.
A known method of cleaning multi-chamber bag filters by supplying purge inert gas to one of the cameras that are disconnected from filtration in the direction opposite to that of CU.
The disadvantage of this method is the large consumption of inert gas, which leads to high economic costs.
The purpose of the invention is to increase the efficiency of the process by reducing the consumption of inert gas. A device for purifying gas from impurities is known, comprising a housing, including filter chambers, each of which is provided with at least one tubular filter element with an external filtering surface, outlet chambers connected via valves to a collecting chamber and through gates to a purge manifold for supplying a purge an inert gas, an inlet chamber, which is common to all filter chambers, with an inlet pattern for the sponge, and a chamber for settled space. MZ The disadvantages of the known device are high flow rates of the blowdown valve. gas and explosion hazard of the installation.
The purpose of the invention is to prevent the danger of an explosion and to save the purge inert gas.
This goal is achieved in that according to the method of cleaning multi-chamber sleeve filters by supplying purge inert gas to one of the chambers that are turned off from the filtering process in the direction opposite to filtration, before supplying purge inert gas, a portion of this chamber under the filter element is filled with an inert gas.
It is advisable in the specified chamber after the supply of purge inert gas to the top of the filter element to submit a countercurrent additional stream of inert gas.
The goal is also achieved by the fact that the device for cleaning multi-chamber bag filters containing a housing includes 1st filter chambers, each of which is equipped with at least one bag filter element with an external filtering surface, flow chambers connected through valves to a collection chamber and through gates with a purge manifold for supplying a purge inert gas, an inlet chamber common to all filter chambers, with an inlet port and a chamber for settled dust, additionally sleep Jeno collector dp supplying an inert gas through the locking vzaimyosv bound veins, Til to each discharge chamber. The proposed method proceeds with the following. The drainage chamber to be cleaned is turned off from the filtration process I and a countercurrent purge of the bag filter element with an inert gas with preservation of the accumulated dust on the surface 4 of the spinning element, i.e. Partial production: filling of the filter chamber under the filter element, after which an additional stream of inert gas is fed in with a countercurrent with discharge of settled dust from the filter element. Before purging, it is possible to partially fill with an inert gas and a filter chamber at the top of the filter element. On. The drawing shows schematically the device, the section. The device comprises a housing 1 with several filter chambers 2, each of which includes at least one bag filter element 3 with an external filter surface. Under the filter chambers there is an inlet chamber 4 with an inlet manifold 5. The internal cavity of the bag filter elements of each filter chamber is from dinene with its own exhaust chamber 6, and each chamber 6 through valves 7 with a collecting chamber 8 and through the gates 9 s a purge manifold 10. The purge means for supplying an inert gas to each outlet chamber 6 are independently controlled and are supplied from an inert gas source 11 with such a flow rate that it does not cause the dust layer to separate from the outer surface STI baghouse filter elements. A bunker is provided in the lower part of the housing under each filter chamber. The device additionally provides a manifold 12 for supplying an inert gas interconnected via a shut-off valve 13 with each outflow chamber 6 and connected to an Additional source 14 of inert gas. The shut-off valves i3 have separate control for each outlet chamber 6. The device operates as follows. At first filtering takes place, valves 7 of each outlet chamber 6 are open, and valves 9 and shut-off valve 13 of collectors with inert purge gas are closed. Regeneration is performed by shutting off valve 7 with one of the chambers. The valve 9 of the purge manifold 10 is opened to carry out the first purge, then the valve 9 is closed and the valve 13 of the collector 12 is opened to separate the settled dust. After closing the valve 13, the dumped dust is removed from the hopper. The first purge can be repeated. The filtering is regenerated: their elements of other chambers are produced in a similar way, after which the device switches to the filtering mode.
权利要求:
Claims (3)
[1]
1. A method of cleaning multi-chamber bag filters by supplying a purge of inert gas to one of the chambers that are turned off from the filtering process in the reverse filtration direction, characterized in that, in order to increase the efficiency of the method by reducing the consumption of inert gas, part of the specified cameras under the filter
09) SU (D) 1; 1 09039
[2]
2. The method according to claim 1, characterized in that an additional inert gas stream is supplied countercurrently to the said chamber after the inert gas purge is fed into the filter element.
[3]
3. A device for cleaning multi-chamber bag filters, comprising a housing including filter chambers, each of which is equipped with at least one bag filter element with an outer filter surface, exhaust chambers connected through valves to the collection chamber and through valves with a purge manifold for supplying a purge inert gas, an inlet chamber common to all filter chambers, with an inlet pipe and a chamber for settled dust, characterized in that, in order to prevent the risk of explosion and saving inert gas purge, the device is additionally equipped with a collector for inert gas supply, interconnected through a shut-off valve with each exhaust chamber.
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同族专利:
公开号 | 公开日
US4292053A|1981-09-29|
FR2450628B1|1983-08-19|
FR2450628A1|1980-10-03|
JPS55119410A|1980-09-13|
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
FR7905659A|FR2450628B1|1979-03-05|1979-03-05|
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