Energy-saving decrease a platoon carrying out is to implement scientific progress concept, compose proposes the major move of socialistic harmony society, be can develop implementation continuously should choose like that. According to Chinese national condition and requirement of 925 environmental protection, need pair of electric dust collector transform for hop-pocket type dust catcher, in order to satisfy environmental protection requirement.
Of the ceaseless development as our country society, economy and people living standard rise ceaselessly, the country is right of soot discharge a standard also will stricter and stricter, to the control of soot index falls by 50mg/m3 to 30mg/m3. This means the electric dust catcher of original ammunition power plant to satisfy a requirement very hard, need converts ability of hop-pocket dust catcher satisfies a requirement. Machine of some factory outfit is boiler of fluid-bed of loop of 2 × 440T/H, the electrostatic formula that uses so removes dust the requirement that cannot have satisfied environmental protection branch, show instead XLDM14920 hop-pocket to remove dust.
The application of hop-pocket dust catcher in circular fluid-bed boiler
One, hop-pocket removes dust working principle
The gas that contain dirt enters each unit ash bucket by diversion canal, below the guiding of system of ash bucket diversion, the casing in dust of ash bucket, the others falling to be entered along with air current directly after big grain dust is detached filters area, the clean gas after filtering passes through wind of body of top part of filter bag classics, platoon to be in charge of eduction. As filter of operating mode undertake, reach certain amount when dirt retention of filter bag surface when, by clear grey control equipment (difference is pressed or time, hand uses control) open gush of electromagnetism pulse a powerful person to blow by set program, shake off the dust on filter bag. The effort of dust have the aid of that falls into ash bucket carries a system to send.
1, enter, canal giving wind:
* is entered, canal giving wind and installation
The dispatching system taking wind in ash bucket, air inlet hand moves control valve to guide flue gas, derive of dust catcher every pass filter chamber.
2, top part body, medium casing:
Top part body, medium casing by the flower board space, top part body is clean air chamber; In component of bag of filter of the installation in casing, casing included gush to blow bag of component of bag of a powerful person of electromagnetism of system, pulse, flower board, filter, filter to secure casing.
* gush boasts a system:
The system includes blowtorch of a powerful person of pulse of bag of pipeline of source of appearance, gas, air, atmolysis, electromagnetism, gush to wait. There is blowtorch of a gush on every filter bag, be linked together through electromagnetism pulse a powerful person and atmolysis bag.
The compression that gush enters filter bag is empty the open time decision that tolerance hires the atmospheric pressure inside and pulse electromagnetism a powerful person by atmolysis. Systematic pressure-relief valve is indicated and control quiet grey atmospheric pressure, the atmospheric pressure that offers atmolysis package should be between 0.2 ～ 0.4MPa, pressure is installed lowlier, to filter bag wear away smaller, below the premise that assures clear grey result, should reach baric attune as far as possible small.
Gush plays persistent time extremely short, will achieve fast reaction time with double diaphragm a powerful person: The compression inside atmolysis bag is empty baric approach sparks diaphragm and advocate diaphragm makes electromagnetism pulse a powerful person maintains close position, below the drive of electromagnetism a powerful person, in spark the generation on diaphragm presses difference, diaphragm is raised, advocate release of air of diaphragm a side exceeds, advocate diaphragm is raised below the action that press difference, atmolysis compresses air to enter gush blowtorch inside the bag, irruptive filter bag leaves in the guiding of gush blowtorch.
The compression that next fast in filter bag developing air current, formed filter bag to be out of shape relative to the abrupt radial of bag basket the dirt that makes face of filter bag appearance accumulative falls off. Electromagnetism pulse a powerful person is when not incentive condition, air discharge provenance is shut, restoration of diaphragm of atmospheric pressure general, electromagnetism pulse a powerful person is shut.
* spends board:
Flower board is used at propping up filter bag and space to pass filter chamber (contain dirt paragraph) , clean air chamber, can check platform as filter bag. Filter bag component from the flower board aperture is loaded.
Component of * filter bag:
The material of filter bag is qualitative already the make choice of of use operating mode according to this dust catcher. Bag basket is used at propping up filter bag, the punch short canal of bag basket coping uses the orderly sex that holds pulse breath to protect filter bag when gush is blown. Load and take out of filter bag all undertake in upside clean air chamber, without should enter dust catcher to pass filter chamber. After removeding gush blowtorch, can assemble and unassemble through spending board aperture filter bag component.
3, ash bucket:
By ash of ash bucket body, inspection door, aerification board, disclose aperture is comprised.
Wind flowguide and clapboard were designed in ash bucket, big limit ground decreases turbulence and prevent Yang Chen 2 times, those who installed the dispatching system taking wind in ash bucket to promote filter bag bottom effectively to contain dirt flue gas is even distributing.
Ash bucket inspection door: Use at bottom to ash bucket interior and filter bag examination. When dust catcher works, inspection door must not be divulged. Before inspection door is opened, want to have preventive measure. (warning: High temperature dirt may cause serious scald and deadly harm) . Before inspection door of open ash bucket, affirm ash bucket is clear already please empty or more than ash is cooling already. When ash bucket inspection door is opened, cannot stand in inspection door ahead, when high temperature dirt rushs, personnel is due and safe escape passageway.
Ash bucket gives grey flange: Use the connection of system is defeated by ash such as flashboard a powerful person with the hand.
Disclose grey aperture: Ash of the disclose when be being used at discharge grey difficulty and dust to agglomerate badly is used.
Ash bucket expects an appearance: Ash bucket must not be used at storing dirt, the dirt of excessive will be gone to by new adsorption likely on filter bag, had caused great pressure to fall the premature attaint of the bag that reach filter. Notice ash bucket expects at any time a directive, prevent excessive to accumulate ash.
4, foot: Use at propping up dust catcher noumenon, ash bucket.
5, detect, control system:
PLC control system allows full automatic operation and individual operation (the hand moves an operation) . The system is logistic by can make up Cheng controller to offer. PLC main control ark should be put removing dust control room, long-range ark is put in dust catcher to carry a platform on the head, control ark has module of processor, I/O and communication link, the picture is on PLC monitoring undertakes on machine.
2, technological process
Dust catcher uses filter makings to capture the grit in flue gas. Filter makings captures of the ability decision dust catcher of grit remove dust efficiency. Accordingly, OK and simple described as carries the technological process of whole dust catcher the control of the obstruction of the air current containing dirt to passing dust catcher, make filter stuff keeps great capture the ability of grit, this control is periodic clear to hop-pocket ash namely, prevent air current obstruction too big.
Air current is guided by the flowguide inside the manager that take wind namely after entering dust catcher enter each ash bucket to receive wind valve respectively, air current discharge crosses the pressure proper motion of filter chamber to control by each, pressure passes discharge of filter chamber air current lowly will bigger. Accordingly, once one passes filter chamber press difference too big, more air current (contain more grit) will be driven toward other pass filter chamber, cross filter chamber to press poor likeness till each. In operating condition, pass filter chamber each press difference basic and identical, if some passes filter chamber pressure difference is taller (prep above set is worth) , this room will enter clear grey order; If some passes filter chamber press difference all the time taller and do not have after clear ash drop apparently, explain this room has filter bag to be blocked up; If some passes filter chamber pressure difference is inferior all the time (be worth under set) , explain bag of this room filter appears likely damaged.
The canal that take wind is set in ash bucket upside, air current has entered filter chamber from this, what ash bucket is in charge of medium air current dispatching system to distributing air current equably to pass filter chamber into wind is whole and sectional.
In passing filter chamber by the flower board space becomes clean air chamber (top part body) He Hanchen room (in casing) two parts. Filter bag installation is on flower board. The air current that contain dirt is in cross filter bag to enter clean air chamber (this process has been filtration Cheng namely or call remove dust process) when, the surface outside filter bag leaves a grey layer namely (cloth bisque) . With filter bag capable person simple look is compared, grey layer is more close. In fact, small grit is captured by grey layer, can cross filter bag otherwise. Accordingly, new filter bag is used in strong investment when, will extremely subtle grit penetrates filter bag escapes, a shape mist is formed in chimney mouth, after cloth bisque is formed, feather shape smoke disappears namely.
The pressure that expects to prevent filter has fallen big, undertake clear ash periodicly to filter bag. Filter bag clear ash is not the grey layer that gets on filter bag keep clear of thoroughly entirely, after clear ash will leftover a few cloth bisque that comprise by extremely subtle grit, use at falling to remove dust capture in the process lesser grit. Clear ash uses implementation of pulse air current, clear grey process is to chase room, undertake line by line. Flue gas carries filter bag, after grit of majority of place to go, be in charge of through giving wind and bring fan, hind by chimney eduction. Accordingly, the operation that handles a process to flue gas reachs pair of flue gas to handle equipment -- the proper protection that the maintenance of dust catcher considers pair of filter bag.
3, hop-pocket type dust catcher has the following advantage:
(1) remove dust efficiency is very tall, can achieve commonly 99% , can catch collect bead diameter to be more than the petty dust grain of 0.3 micron, can satisfy strict environmental protection requirement.
(2) performance is steady. Processing wind force, gas contains the change of the working requirement such as dirt quantity, temperature, to bag type dust catcher remove dust effect impact is not big.
(3) dust processing is easy. Bag type dust catcher is a kind of purifying device doing type, do not need to use water, so nonexistent sewage disposal or slop handle an issue, collection dust reclaims easily use.
(4) use agile. Processing wind force but by horary hundreds stere arrives horary tens of 10 thousand stere, can regard direct locate as the indoor, small-sized aircrew around, also but make it removes dust largely room.
(5) the structure is simpler, move to be stabilized quite, initiative investment is less, safeguard convenient.
4, conclusion
(1) bag type dust catcher is subtle to catching grit is more effective, because this removes dust efficiency is taller than electric dust catcher, discharge soot chroma small 30mg/m3, can amount to 10mg/m3 left and right sides even, and bag type dust catcher can control minim heavy metal to emit into atmosphere better.
(2) bag type dust catcher does not suffer the flue gas dust content, effect that waits for property than resistor; The change of boiler bear, the wave motion of smoke tolerance is right the impact of bag type dust catcher is very little also.
(3) dust catcher of general bag type uses minute of room structure, take amount having abundant in the design, make dust catcher OK rotate is overhauled and do not affect boiler move.
Get Price
WhatsApp