CN110216025A - Efficient cyclone system and method are kept when a kind of reduction process tolerance - Google Patents

Abstract

The present invention relates to cyclone separator technology fields, efficient cyclone system and method, including air inlet pipeline, tap line, air volume regulating valve, tolerance adjusting controller, separator pressure-drop monitor, cyclone separator, exhaust line, unloading valve are kept when providing a kind of reduction process tolerance.Separator pressure-drop monitor is connected by signal wire with tolerance adjusting controller, and tolerance adjusting controller is connected by signal wire with air volume regulating valve.When work, cyclone separator operating pressure drop signal driving air volume regulating valve work of the tolerance adjusting controller according to separator pressure-drop monitor real-time monitoring, control is supplemented by tap line to make to keep stablizing by the tolerance of cyclone separator to the tolerance of cyclone separator.The present invention solves the problems, such as the cyclone separator of prior art low separation efficiency in reduction process tolerance, and without human intervention, simple and practical, small investment, effect it is good；Design and transformation suitable for cyclone system.

Description

Efficient cyclone system and method are kept when a kind of reduction process tolerance

Technical field

This application involves cyclone separator technology fields, more particularly to so that cyclone separator is kept high in a kind of low tolerance The cyclone system and method for efficiency.

Background technique

Cyclone separator is a kind of commonly used equipment for gas-solid or gas-liquid system and gas-liquid-solid system heterogeneous separation, Its working principle is that tangentially enter rotary motion caused by separator using air-flow, make by larger centrifugal force solid particle (or Drop) it gets rid of to separator wall surface, to separate with air-flow, then the dust-exhausting port of cone lower part is dropped down onto along separator wall surface downlink, from Open separator；The cleaner flow rotation uplink in center, finally from the center exhaust pipe discharge at the top of separator.Cyclone separator It is simple with structure, cheap, efficiency is higher, pressure drop is moderate, can be used for high temperature, high pressure, high granule density, high abrasion, high The harsh process environments such as corrosion, it is easy to operate, maintenance is few the advantages that, be widely used to the neck such as process industrial, environmental protection Domain.But there is also some shortcomings for cyclone separator, for example, to operation tolerance great fluctuation process operating condition bad adaptability, separative efficiency with Operation tolerance changes greatly, and especially in low tolerance, separative efficiency decline is significant.Because the processing tolerance of cyclone separator by Zero increases, and separative efficiency increases with tolerance before this and increased；When reaching a certain tolerance (referred to as maximal efficiency tolerance, Q_maxe) when Efficiency reaches maximum, and then tolerance is further added by, and efficiency but declines；Then the increase of qi-regulating amount everywhere is always for the pressure drop of cyclone separator Increase, as shown in Figure 1.That is, cyclone separator only operates ability under the slightly below tolerance of its maximal efficiency tolerance Realize optimal effects of energy saving and emission reduction.When low tolerance (more lower than maximal efficiency processing tolerance), although the pressure of cyclone separator Drop lower, but efficiency is also low, and particle, which is run, damages more, deficiency in economic performance；Tolerance is handled if handling tolerance and being greater than maximal efficiency, is not only imitated Rate is low and pressure drop is high, therefore, whenever, cyclone separator all should be avoided in processing tolerance and be greater than maximal efficiency processing gas It is operated in the case where amount.

Substantially for the processing of cyclone separator caused by operation fluctuation, device shutting down in actual production process etc. tolerance Degree fluctuation, so as to cause cyclone separator separative efficiency is unstable, efficiency reduces, particle runs the problem of damage increases, this field Technical staff have been presented for some solutions.Such as, patent 1 (number of patent application 201721819403.4) discloses " a kind of Self-interacting type cyclone separator ", when the dust sensor for being mounted on cyclone separator exhaust ports monitors exhaust ports dust When concentration is higher, then the concentration signal of monitoring is converted into the signal of stepper motor rotation by converter, utilizes stepper motor Come control be mounted on cyclone separator air inlet adjustable plate rotation so that blast pipe venthole expand or reduce, reach control The purpose of intake processed, with solve wind pressure at blast pipe it is excessive when, be mingled in the air that is discharged at discharge pipe more polymictic Problem, and without human intervention, use is more convenient.For another example, patent 2 (number of patent application 201611077274.6) discloses A kind of the cyclone separator and method of adjust automatically " filter effect can ", i.e., install photoelectric sensing in the exhaust outlet of cyclone separator Device using the light transmittance (namely granule density) of photoelectric sensor monitoring exhaust outlet discharge gas, and signal is passed to automatically Control unit processing, driving adjust cam driven flow adjusting coral plate and rotate to adjust the dusty gas flow velocity of air inlet pipe, with Import gas velocity is kept to stablize；Insertion depth of the center inner cylinder in separator is adjusted by driving adjustment gear simultaneously, to reach Real-time automatic control to cyclone separator filter effect (i.e. separative efficiency).But all there are some defects in these schemes: first is that It is only applicable to the situation that tolerance is excessive or wind pressure is excessive, not can solve the too low caused Cyclone efficiency decline of tolerance Problem, e.g., cyclone separator processing tolerance are seriously lower than design (predetermined) tolerance, and device goes into operation period device technique tolerance from zero Increase to normal tolerance, the case where downtime technique tolerance is gradually reduced to zero；Second is that monitoring system is complicated, dust sensor and Measurement accuracy, the accuracy of photoelectric sensor be not high, and price is more expensive；Third is that controlling blast pipe using air inlet adjustable plate Intake when place's wind pressure is excessive, or coral plate is adjusted with flow to control induction air flow ratio, what is utilized is all Throttle Principle, this will be produced Raw restriction loss, additionally increases energy consumption；And the tolerance for needing cyclone separator to handle all is often according to manufacturing technique requirent Determining, arbitrarily it cannot change or limit, the resistance to outflow by increasing air-flow is also possible to change tolerance to production technology It impacts.Therefore, these scheme practicabilities of the prior art are poor, need further technological innovation.

Summary of the invention

The application provides one kind makes cyclone separator automatically keep efficient cyclonic separation in reduction process tolerance Device system and method, and it is simple, easy to implement.

To achieve the goals above, the application uses following technical method and system:

One kind makes cyclone separator automatically keep stable and efficient method at present in reduction process tolerance, and feature exists In: (1) cyclone separator described in presses its maximal efficiency tolerance Q_maxeDesign takes related process units fluctuation tolerance Maximum value Q_1max≤Q_maxe, and Q_1max≈Q_maxe, by tolerance Q_1maxDesign this cyclone separator；(2) cyclone separator described in Dusty gas import and exhaust outlet are respectively provided with pressure monitor, the pressure drop PD of real-time monitoring cyclone separator；In the whirlwind Tap line and air volume regulating valve, tolerance adjusting controller are set in separator inlet line.

Because according to cyclone separator operation-property relationship characteristic curve is shown in Fig. 1: as long as cyclone separator The geometric structure diamete of each section is certain, then the relationship between its pressure drop PD and processing tolerance Q is exactly determining (that is, whirlwind The pressure drop of separatorWherein, ξ, ρ_g、Q、A_iIt is resistance coefficient, the import dust-laden of the cyclone separator respectively Gas density, the processing tolerance of cyclone separator, inlet -duct area).So being believed according to the cyclone separator pressure drop PD of real-time monitoring Breath adjusts branch tolerance Q in real time₂Size can automatically adjust the size of cyclone separator device processing tolerance Q in real time or maintain Q It is worth invariable (because perseverance has Q ≡ Q₁+Q₂), regardless of the technique tolerance Q that process units generates₁The fluctuation of which kind of degree occurs.

When work, when generated by process units, into the technique tolerance Q of the cyclone separator₁Occur larger fluctuation or (Q when going into operation when device is opened, stopped work₁It is incrementally increased from 0, Q when shut-down₁It is gradually reduced to 0), by the way that the pressure monitor is real When the cyclone separator pressure drop PD signal that monitors input to the tolerance adjusting controller, generate in driving tap line The working signal of tonifying Qi increases or decreases the air inflow Q of branch₂, total processing tolerance Q into cyclone separator can be made automatic Maintain the operation tolerance Q of setting_1max, to maintain to stablize by the separative efficiency of cyclone separator automatically, reach guarantee separation The purpose of effect.If the tolerance Q for entering cyclone separator to be maintained close to the maximal efficiency tolerance Q of cyclone separator_maxe, Even if then technique tolerance Q to be processed caused by process units₁It is very low, the efficiency of cyclone separator can also be adjusted to most automatically The level of big efficiency, realizes optimal separating effect.

Present invention also provides one kind to automatically keep efficient cyclone system in reduction process tolerance, Be characterized in that: the cyclone system, including air inlet pipeline, tap line, air volume regulating valve, cyclone separator, Unloading valve, exhaust pipe, separator pressure monitor, tolerance adjusting controller.The inlet tube is set to the separator cylinder The side of body, and which is provided with tap line；Air volume regulating valve, the air volume regulating valve are provided in the tap line It is connected with tolerance adjusting controller；The exhaust pipe is set at the top of the cyclone separator cylinder, unloads dirt valve set on the whirlwind Separator cone base；The pressure monitor is installed on air inlet, at exhaust outlet pipe, is connected with tolerance adjusting controller It connects.

At least one opening of the tap line (2), or nozzle or equipment interface at least one opening.

Further, the air inlet, the pressure monitor at exhaust pipe are preferably electronic pressure gauge, pressure difference sensing Device, pressure transmitter, the pressure monitor of as existing mature technology.

Further, the air volume regulating valve is preferably electric control valve, pneumatic control valve, as existing mature technology Regulating valve.

Further, the tolerance adjusting controller is by signal processor, stepper motor, power circuit, signal line Composition.

Compared with prior art, the beneficial effects of the present invention are: operation-property relationship according to cyclone separator is special Property, adjust the tolerance of branch (tonifying Qi) pipeline introduction in real time using cyclone separator inlet and outlet mouth pressure difference (or pressure drop) information, The fluctuation (including opening, shut-down operating condition) for stabilizing the technique tolerance of process units input cyclone separator, makes to enter cyclone separator Total tolerance maintain the tolerance of setting or the level close to cyclone separator maximal efficiency tolerance always, to guarantee whirlwind point Reach optimal separative efficiency from device, especially can also make cyclone separator near pressure point of maximum efficiency in lower qi-regulating amount Work；The application is simple, practical, small investment, without human intervention, and effect is good, is easy to promote.

Detailed description of the invention

Fig. 1 is operation-property relationship performance diagram of cyclone separator；

Fig. 2 is a case study on implementation of the cyclone system of the application；

Fig. 3 is the cold model experiment effect that scheme carries out as shown in Figure 2；

Numbering in the drawing title: 1- air inlet pipeline, 2- tap line (tonifying Qi pipeline), 3- air volume regulating valve, 4- tolerance are adjusted Controller, 5- separator pressure-drop monitor, 6- exhaust line, 7- cyclone separator, 8- unload dirt valve.What Q1- process units generated The technique tolerance handled by cyclone separator, the tolerance that Q2- is supplemented by tap line are needed, Q- passes through total gas of cyclone separator Amount.

Case is embodied

Embodiment to be illustrated more clearly that the application, is briefly described with reference to the accompanying drawing.It is clear that retouching below Attached drawing in stating is only some typical embodiments of the application, instead of all the embodiments.Skill common for this field For art personnel, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.

One kind automatically keeping efficient cyclone system and method in reduction process tolerance.

One case study on implementation is shown in Fig. 2, comprising: air inlet pipeline 1, tap line (or tonifying Qi pipeline) 2, air volume regulating valve 3, gas Measure adjusting controller 4, separator pressure-drop monitor 5, exhaust line 6, cyclone separator 7, unloading valve 8.

When system works, dust-laden (or drop) the gas Q1 that process units generates enters whirlwind point by air inlet pipeline 1 From gas-solid (gas-liquid) separation is carried out inside device 7, the dust (drop) separated is discharged by unloading valve 8；Clean gas from The exhaust line 6 at 7 top of separator is discharged.The pressure drop of 5 on-line real time monitoring cyclone separator 7 of separator pressure-drop monitor, and Signal is transmitted to tolerance adjusting controller 4.In the case study on implementation of Fig. 2, tolerance adjusting controller 4 is monitored according to separator pressure-drop The operation pressure drop PD instruction air volume regulating valve 3 of the cyclone separator 7 of 5 real-time monitoring of device acts, and when Q1 is lower than design tolerance, opens Opening air volume regulating valve 3 makes make-up gas Q2 enter cyclone separator 7 from tonifying Qi pipeline, by the processing tolerance Q (Q of cyclone separator 7 =Q1+Q2) it maintains to arrive setting value.Fig. 3 is tested with the case study on implementation of the cyclone separator simulation drawing 2 of a barrel dliameter 300mm, It is tested with 800 mesh talcum powder, the effect picture that the cyclone inlet tonifying Qi of actual measurement is surely imitated.As seen from Figure 3, model whirlwind point Maximal efficiency tolerance about 700m3/h from device, separative efficiency at this time is maximum, and about 93%；Processing tolerance is below or above 700m3/h, separative efficiency all reduce；Tolerance is handled greater than after 700m3/, separative efficiency declines rapidly.Using the application Fig. 2's Tonifying Qi scheme then can maintain always separative efficiency near maximal efficiency 93%, the effect highly significant surely imitated.

The foregoing is merely one embodiment of the application, are not intended to limit the protection scope of the application, all utilizations Equivalent structure or equivalent flow shift made by present specification content is applied directly or indirectly in other relevant technologies Field similarly includes within the scope of patent protection of the application.

Claims (4)

1. keeping efficient cyclone system and method when a kind of reduction process tolerance, including air inlet pipeline (1), branch Pipeline (2), air volume regulating valve (3), tolerance adjusting controller (4), separator pressure-drop monitor (5), exhaust line (6), whirlwind Separator (7), unloading valve (8), side and cyclone separator (7) phase of the air inlet pipeline (1) in cyclone separator (7) Even, air inlet pipeline (1) is equipped with tap line (2), and the tap line (2) is equipped with air volume regulating valve (3), described Air volume regulating valve (3) is connected with tolerance adjusting controller (4), and the tolerance adjusting controller (4) and separator pressure-drop monitor Device (5) is connected, and the pressure tappings of the separator pressure-drop monitor (5) are respectively installed in the air inlet mouth of pipe of cyclone separator (7) At exhaust pipe mouth, the exhaust line (6) is connected with the top of cyclone separator (7) cylinder, described to unload dirt valve (8) and rotation The bottom of wind separator (7) cone is connected.

2. keeping efficient cyclone system when a kind of reduction process tolerance according to claim 1, feature exists In separator pressure-drop monitor (5) signal output end is inputted by signal wire and the signal of tolerance adjusting controller (4) End is connected, and the signal output end of tolerance adjusting controller (4) passes through the signal input part phase of signal wire and air volume regulating valve (3) Even.

3. keeping efficient cyclone system when a kind of reduction process tolerance according to claim 1, feature exists In, at least one opening of the tap line (2), or the equipment interface at least one opening.

4. cyclone separator keeps efficient method when a kind of reduction process tolerance according to claim 1, feature exists In using the operating pressure drop of separator pressure-drop monitor (5) On-line sampling system cyclone separator (7), and by measured reality When pressure drop signal be transferred to tolerance adjusting controller (4) processing, tolerance adjusting controller output signal drive air volume regulating valve (3) Work, regulation is supplemented into the tolerance of cyclone separator (7) from tap line (2), so that cyclone separator (7) will be passed through automatically Tolerance maintain setting value, keep the separative efficiency of cyclone separator (7) stable and high efficiency.