CN103657325B - A kind of process of Hospital medical waste gas and safe venting system - Google Patents
A kind of process of Hospital medical waste gas and safe venting system Download PDFInfo
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Abstract
The invention discloses a kind of process and safe venting system of Hospital medical waste gas, comprise the deduster connected successively, airtight heater, reactor, filter, main induced draft fan and circulating fan.Described deduster, airtight heater, reactor, filter are connected successively with the gas inlet and outlet of air-introduced machine.The entrance of circulating fan is connected with filter, and outlet is connected with reactor.Arrange temperature, pressure and flow sensor in systems in which, and by measurement module process measuring-signal.According to measuring-signal, automatic control module is to deduster, and airtight heater, the duty of reactor and Fan Equipment adjusts, to adapt to the needs of current medical exhaust-gas treatment.The wide ranges of the process medical treatment waste gas of this system, treatment effect is good, and has convenient for installation and maintenance, invests relatively less feature.
Description
Technical field:
The present invention relates to field of environment protection, particularly the process of waste gas that produces in medical treatment of a kind of hospital and safe venting system.
Background technology:
In hospital, different medical function room will produce different waste gas, and its composition there are differences, but the related data of the medical Exhaust gas species of current domestic shortage and specificity analysis and treatment technology.By analysis of investigating to the source of medical waste gas and ingredient properties, research is applicable to the treatment technology of the external safety dumping of medical waste gas, and the treatment facility that research and development are relevant.
Grasp according to the information of early stage to the source of waste gas, discharge, composition and character, can propose effectively to process means.Reach the safety standard that medical waste gas externally discharges.Meet " hospital Waste Management regulations " (No. 380th, Decree of the State Council of the People's Republic of China).Associated laws and regulations, department regulation, national catalogue, national standard, national policy and national planning etc. that the departments such as up-to-date State Environmental Protection Administration put into effect.These files are to management such as the definition of clinical waste, classification, collection transport, packing mark, process disposal and storages and dispose link and all made concrete regulation and specification.The medical waste gas of safety dumping also needs to meet the Law on Environmental Protection of the People's Republic of China's (No. 22 issue of People's Republic of China's decree of chairman on December 26th, 1989)
In the medical exhaust-gas treatment patent application relevant to present patent application, the utility model patent " deodorization treatment device for exhaust of medical waste " having Shandong Xinhua Medical Environmental Protection Equipment Co., Ltd. to apply for, application number 200820232764.3.This patent application relates to a kind of deodorization treatment device for exhaust of medical waste, belong to medical field of environment protection equipment, comprise deodorizing tower and filter, the gas outlet of deodorizing tower is communicated with the air inlet of filter bottom, filter top is provided with gas outlet, and deodorizing tower inside top arranges shower nozzle, and shower nozzle is by pipeline connection deodorant liquid case, it is characterized in that filter top arranges steam pipe, bottom arranges drain pipe.Can carry out deodorization process to the waste gas produced in medical waste high temperature sterilization process, and cost is low, effective.The deodorizing process of this patent just to medical waste gas, adopts the mode of spray thrower spray deodorant to eliminate stink in its deodorizing case, can not safe handling waste gas, realizes safety dumping.
In the medical exhaust-gas treatment patent application relevant to present patent application, the utility model patent " medical waste gas removing device " having Zhang Zhongkai to apply for, application number 95240293.9.This utility model patent provides a kind of medical waste gas removing device be arranged in small medical equipment, belong to medical apparatus and instruments neck city, it controls kingfisher, inhaling hose, gas exhaust inspecting cover, exhaust hose, screw, nut etc. by small-sized axial flow fan, air-breathing and forms.It has, and structure is simple, use is reliable, design is newly led, respond well advantage.Its principal character utilizes axial flow blower, installs an air-breathing additional and control cover, form negative pressure space, install a gas exhaust inspecting cover additional at its air-out position, form malleation space at its air intake position, so just makes device have the function of pump drainage medical treatment waste gas.This utility model can be used on need pump drainage medical treatment waste gas various small medical equipment among.This patent is just pumped to outdoor to medical waste gas, and is only applicable in small desk Medical Devices.Any safe handling is not carried out to medical waste gas.
In the medical exhaust-gas treatment patent application relevant to present patent application, there is the utility model patent " a kind of filter of exhaust gas generated by medical waste treatment " of the limited public affairs application of Shandong China sky environment, application number numbers 201120066730.3.A kind of filter of exhaust gas generated by medical waste treatment is made up of stainless steel, top is provided with two recirculated water mouth sprays, Pall ring filler is installed additional in the middle part of filter, the waste gas that Biohazard Waste process produces is direct gatherer bottom after entering filter, upwards dispersed by a kind of the uncovered of horn mouth shape of particular design, fully contact with Sprayer Circulation water in Pall ring filler, the toxic component in waste gas is filtered, and the waste water of formation is discharged through discharge outlet.Remaining micro-waste gas carries out secondary filter qualified discharge through activated carbon filtration.This patent is just filtered medical waste gas, and absorbs waste gas by Sprayer Circulation water, does not carry out safe handling.Finally, to remaining waste gas activated carbon filtration, easily cause water content in active carbon comparatively large and lose absorption activity.
The process of the waste gas produced in a kind of medical treatment described in this patent and safe venting system still belong to the first application in current domestic patent.Therapeutic medical waste gas may result from medical experiment heating, pharmacy solution evaporation, special gas release etc. in medical procedure.Containing a large amount of pathogenic microorganisms, and various medicine, flue gas particle and aerosol particle small in a large number may be contained in medical treatment waste gas.The defect that the conventional processing mode ubiquity such as ultraviolet disinfection, ozonization is more.(1) comprehensively focusing on of medical waste gas cannot be realized, generally can only a part of pollution sources wherein be processed.(2) cannot carry out Measurement accuracy to treatment effect, the waste gas be discharged in environment is difficult to meet safety dumping standard and environmental requirement.(3) Aulomatizeted Detect and controlling extent low.
For overcoming existing technological deficiency, the invention provides a kind of process and safe venting system of medical waste gas.This system can focus on various dissimilar medical waste gas comprehensively, adopt sterilization, dedusting, deodorizing, the methods such as filtration, biological safety is good comprehensively, not easily occurs that pathogenic microorganisms spreads.And the wide ranges of medical waste gas can be processed, treatment effect is good, and has convenient for installation and maintenance, invests relatively less feature.
The invention discloses a kind of process and safe venting system of Hospital medical waste gas, comprise the deduster connected successively, airtight heater, reactor, filter, main induced draft fan and circulating fan.Described deduster, airtight heater, reactor, filter are connected successively with the gas inlet and outlet of air-introduced machine.The entrance of circulating fan is connected with filter, and outlet is connected with reactor.Arrange temperature, pressure and flow sensor in systems in which, and by measurement module process measuring-signal.According to measuring-signal, automatic control module is to deduster, and airtight heater, the duty of reactor and Fan Equipment adjusts, to adapt to the needs of current medical exhaust-gas treatment.This equipment effectively can process and safety dumping the medical waste gas that the reasons such as special gas release in medical experiment heating, pharmacy solution evaporation, medical procedure produce.And the medical waste gas of process means to specific environment targetedly can be adopted to adjust, thus reach better effect.The wide ranges of the process medical treatment waste gas of this system, treatment effect is good, and has convenient for installation and maintenance, invests relatively less feature.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, propose a kind of process and safe venting system of medical waste gas.This system can focus on various dissimilar medical waste gas comprehensively, and adopt sterilization, dedusting, deodorizing, the methods such as filtration, biological safety is good comprehensively, not easily occurs that pathogenic microorganisms spreads.The wide ranges of treatable medical waste gas, treatment effect is good, and has convenient for installation and maintenance, invests relatively less feature.
The technical scheme that the present invention realizes above-mentioned target is a kind of process and safe venting system of medical waste gas.Comprise the deduster connected successively, airtight heater, reactor, filter, main induced draft fan and circulating fan.Described deduster, airtight heater, reactor, filter are connected successively with the gas inlet and outlet of air-introduced machine.The entrance of circulating fan is connected with filter, and outlet is connected with reactor; Arrange temperature, pressure and flow sensor in systems in which, and by measurement module process measuring-signal.According to measuring-signal, automatic control module is to deduster, and airtight heater, the duty of reactor and Fan Equipment adjusts, to adapt to the needs of current medical exhaust-gas treatment.
In order to achieve the above object, this invention takes following technical scheme:
A kind ofly be applicable to the multiple process of medical waste gas and the system of safety dumping, adopt thermal resistance, pressure gauge, flowmeter, electrodymamometer, hygrometer, gas dust content instrument, gas pollutant measuring instrument and gas bacteria containing amount measuring instrument, system support control system, measuring-signal data collecting system carry out a series of process and monitoring to exhaust-gas treatment and safety dumping.The monitor signal obtained is needed to have: deduster porch dustiness detection signal, house outlet gas flow signals, airtight calorifier inlets temperature signal, airtight heater outlet temperature signal, airtight heater electrical power signal, reactor pressure signal, reactor outlet water capacity signal, filter outlet water capacity signal, filter outlet pollutant load detection signal, filter outlet bacteria containing amount detection signal, indoor environment air temperature signal, outdoor environment air temperature signal.After acquisition signal, first acquisition system carries out data screening and process, then carries out according to the result after data processing the work controlling each parts.Its feature comprises the following steps:
(1) waste gas dedusting process: first medical waste gas enters deduster under the effect of air inducing air-flow.The dust collection method that deduster adopts adopts electrostatic precipitation mode.The dust removing effects of deduster can according to control device adjustment electrostatic potential, discharge frequency and the switch of system.Under the effect of control device, the electrostatic interaction of deduster is by most dust particle removings of waste gas.The germ be adsorbed in waste gas in dust particle also will remove thereupon.
(2) waste gas heating: the heating means of airtight heater adopt Electric heating.The Electrothermal ring that airtight heater adopts is placed on the inside wall of heater.Heater body and external environment condition sealing completely cut off.The externally fed of Electrothermal ring adopts Alternating Current Power Supply to control.Control heating source by the temperature control system attached by heater, the off-gas flows entering heater is heated uniformly; In heating process, the heating power that control system regulates heater to apply slowly changes, and the outlet temperature realizing waste gas fluctuates in very little scope according to the temperature requirement of setting; In general, the occasion that the inlet temperature of waste gas produces along with temperature and the waste gas of environment and changing to some extent, but can according to the Exhaust gas species requirement of process, and waste gas is heated to a specific temperature and sends from exit again.Conveniently can adjust temperature setting, make main composition to be processed in waste gas obtain reaction temperature preferably.
(3) exhaust-gas treatment course of reaction: waste gas can enter reactor and carry out the innoxious reaction treatment process of waste gas after obtaining suitable reaction temperature.Due to medical experiment heating, pharmacy solution evaporation, special gas release etc. in medical procedure may be resulted from medical waste gas.Containing a large amount of pathogenic microorganisms, and various medicine, flue gas, soot dust granule and aerosol particle small in a large number may be contained in medical treatment waste gas.So reactor needs to possess multiple reaction reagent, thus all kinds of medical waste gas can be focused on.There is in reactor reagent spray device, conveniently the reaction reagent of preloaded is injected in reactor.During gas channel in the distribution grid that off-gas flows is installed by inside reactor, the droplet of reaction reagent is mixed into the pollutant reaction with waste gas in air-flow by the multiple vertical aperture on passage, removes corresponding pollutant.Select suitable reaction reagent and can remove pathogenic microorganisms, drug particles, the soot dust granule in flue gas, the sulfide in flue dust and aerosol granule.Distribution grid can make medical waste gas air current flow evenly, higher with the droplet mixing efficiency of reaction reagent.
(4) waste gas filtering process: waste gas, after reactor carries out harmless treatment, enters filter.Place the filtration active carbon of some according to the traffic requirement of flow of process air in filter.Reaction reagent in air-flow can all filter by the placement amount of active carbon and modes of emplacement.Activated carbon also have a small amount of remaining droplet to adsorb after the reaction to waste gas, and the part granule that may generate and sour gas in reaction to be adsorbed.The effect of activated carbon be also likely exist in purifying exhaust air thoroughly a small amount of microorganism, granule, droplet and sour gas.In use for some time, the activity of active carbon can decline.Now, need to change the active carbon in filter or regenerate.
(5) EGR after process: generally, at waste gas after filter, major pollutants wherein and pathogenic microorganisms are all disposed.But sometimes due to the major pollutants in medical waste gas and pathogenic microorganisms content too high, may, at filter outlet still containing more major pollutants and pathogenic microorganisms, fail to reach processing requirements.Now again to import in reactor through circulating line by circulating fan and react.Now, the valve opening on circulating line, the valve closing on the main exhaust pipeline that main induced draft fan connects.Until the major pollutants of filter outlet and pathogenic microorganisms reach processing requirements, then close the valve on circulating line, open the valve on main exhaust pipeline.
(6) after process, waste gas is discharged: after the major pollutants of filter outlet and pathogenic microorganisms reach processing requirements, the valve opening on the main exhaust pipeline that main induced draft fan connects.Waste gas after process is device for transferring under the effect of main induced draft fan.When valve closing on main exhaust pipeline, the air in outside atmosphere is introduced indoor by air inducing fan housing by main induced draft fan.This on the one hand can continue to keep the stability and safety of main induced draft fan to run during valve closing on main exhaust pipeline; Also the exit gas gas flow temperature entering main induced draft fan can effectively be reduced in medical waste gas treatment process on the other hand.
Compare with the system of safety dumping with current medical exhaust-gas treatment, system of the present invention effectively can process and safety dumping the medical waste gas that the reasons such as special gas release in medical experiment heating, pharmacy solution evaporation, medical procedure produce.And the medical waste gas of process means to specific environment targetedly can be adopted to adjust, thus reach better effect.The wide ranges of the process medical treatment waste gas of this system, treatment effect is good, and has convenient for installation and maintenance, invests relatively less feature.In addition, the present invention is described deduster, airtight heater, and reactor, filter, main induced draft fan and circulating fan are all integrated in a compact equipment box; Equipment integration is beneficial to in-site installation.Described deduster, airtight heater, reactor, filter, main induced draft fan and circulating fan and between valve all carry out work according to the monitoring module of system configuration, automatization level is high, can the indices of waste gas after check processing.
Accompanying drawing illustrates:
Accompanying drawing 1 is system organization structure chart of the present invention
Detailed description of the invention:
See accompanying drawing 1, implement process and the safe venting system of a kind of medical waste gas of the present invention.This system can focus on medical waste gas comprehensively, adopt sterilization, dedusting, deodorizing, the methods such as filtration, biological safety is good comprehensively, not easily occurs that pathogenic microorganisms spreads.The wide ranges of treatable medical waste gas, treatment effect is good, and has convenient for installation and maintenance, invests relatively less feature.System comprises the deduster 2 connected successively, airtight heater 3, reactor 4, filter 5, main induced draft fan 6 and circulating fan 8.Described deduster 2, airtight heater 3, reactor 4, filter 5 are connected successively with the gas inlet and outlet of air-introduced machine 6.The entrance of circulating fan 8 is connected with filter 5, and outlet is connected with reactor 4; Arrange temperature, pressure and flow sensor in systems in which, and process measuring-signal by measurement module 9.Measurement module and sensor are connected with controller 13-18 and fetch acquisition measuring-signal.According to measuring-signal, automatic control module 10 pairs of dedusters 2, airtight heater 3, the duty of reactor 4 and Fan Equipment 6,8 adjusts, to adapt to the needs of current medical exhaust-gas treatment.
The entrance of described deduster equipment can be connected to be needed in waste gas bottle to be processed, also can adopt in the room that is directly placed on and needs to carry out medical waste gas.The outlet of deduster is connected on the entrance of airtight heater.Both directly adopt pipeline to connect.The entrance pipeline of described reactor is connected to the outlet of heater.The entrance pipeline of described filter is connected to the outlet of reactor.The two ends of reactor adopt bearing to connect.Reactor can adjust flexibly according to actual position of laying and lay level angle.
Implementing step one of the present invention is that medical waste gas 1 enters deduster 2 and extraneous entrance through pipe joint.There are gas temperature measuring sensor and flowmeter in the porch of deduster, automatic control module 10 can adjust the electrostatic potential of deduster 2 according to the gas inlet temperature of deduster 2 and flow, discharge frequency and start and stop, control the dust removing effects of deduster 2, by most dust particle removings of waste gas.Thus the germ be adsorbed in waste gas in dust particle is also removed thereupon.The power consumption of deduster 2 can be chosen according to the flow of real gas.As being 75m3/h at exhaust gas flow, when gas inlet temperature is 25 DEG C, the electrostatic potential of deduster 2 is preferably 1500v, and discharge frequency is preferably 25Hz, keeps continuing opening.
Implement step 2 of the present invention be through deduster 2 process after medical waste gas carry out the process that heats further by airtight heater 3.Temperature control system attached by the heater of heater 3 can control the power heated, thus heats uniformly the off-gas flows entering heater 3; In heating process, control system module 10 regulates the heating power of the heater of heater 3 slowly to change, and the outlet temperature realizing waste gas fluctuates in very little scope according to the temperature requirement of setting; In general, the occasion that the inlet temperature that waste gas enters deduster 2 can produce along with the temperature of environment and waste gas and changing to some extent, waste gas can be heated to according to the Exhaust gas species of required process the temperature requirement (such as specific temperature) meeting setting by heater, and fluctuate in very little scope, and then send from airtight heater 3 exit.Control system module 10 can by operator need set this temperature requirement (such as: certain specific temperature) at any time, thus according to when needing main component to be processed to obtain reaction temperature preferably in the waste gas of pre-treatment, thus make can obtain higher treatment effeciency in follow-up waste gas reaction process.Be the SO2 sour gas that in gas componant, content is more as what mainly need process in waste gas, then airtight heater 3 exports design temperature and is preferably 120 DEG C.
If there is situations such as overtemperatures in heating process, must report to the police.The alarm temperature (as 65 DEG C) exceeding setting as heating-up temperature then control system cuts off the power supply of heater, and is pointed out by monitor screen and other acoustooptic are reported to the police.The detection signal of airtight heater 3 comprises airtight calorifier inlets temperature signal, airtight heater outlet temperature signal, airtight heater electrical power signal.
Implementing step 3 of the present invention is exhaust-gas treatment course of reaction.Waste gas can enter reactor 4 and carry out the innoxious reaction treatment process of waste gas after obtaining suitable reaction temperature.Because medical waste gas may result from medical experiment heating, pharmacy solution evaporation, special gas release etc. in medical procedure, therefore wherein containing a large amount of pathogenic microorganisms, and various medicine, flue gas, soot dust granule and aerosol particle small in a large number may be contained.So reactor 4 needs to possess multiple reaction reagent, thus all kinds of medical waste gas can be focused on.There is in reactor 4 reagent spray device, conveniently the reaction reagent of preloaded is injected in reactor.Concrete, when off-gas flows passes through the gas channel in the distribution grid installed reactor 4 inside, the droplet of reaction reagent is mixed into the pollutant reaction with waste gas in air-flow by the multiple vertical aperture on passage, removes corresponding pollutant.Select suitable reaction reagent and can remove pathogenic microorganisms, drug particles, the soot dust granule in flue gas, the sulfide in flue dust and aerosol granule.Distribution grid can make medical waste gas air current flow evenly, higher with the droplet mixing efficiency of reaction reagent.As to aerosol granule (being less than or equal to PM10), in the medical waste gas of 400000-450000/m3 content, remove pathogenic microorganisms, reaction reagent can select chloride 20ppm solution, is no more than 10 beats/min reacts according to spraying frequency.The spray amount of each reaction reagent is preferably 0.2ml.Detection signal in reactor 4 comprises reactor pressure signal and reactor outlet water capacity signal.
Implementing step 4 of the present invention is waste gas filtering process.Waste gas, after reactor 4 carries out harmless treatment, enters filter 5.Place the filtration active carbon of some according to the traffic requirement of flow of process air in filter 5.Reaction reagent in air-flow can all filter by the placement amount of active carbon and modes of emplacement.Be the system of 75m3/h to exhaust gas flow, the placement quantity of activated carbon is not less than 5kg; Flow through in path along off-gas flows, be preferably 0.9m by the shortest length of active carbon.Activated carbon adsorbs droplet remaining in the waste gas after reactor 4, and adsorbs the fraction solids granule that may generate in reactor and sour gas.In use for some time, the adsorption capacity of active carbon has certain decline.Can regularly change the active carbon in filter 5 according to the service condition of active carbon or regenerate.The off-gas flows that filter 5 exports detects and comprises filter outlet water capacity signal, filter outlet pollutant load detection signal and filter outlet bacteria containing amount detection signal.
Implementing step 5 of the present invention is EGR after process.Generally, at waste gas after filter 5, major pollutants wherein and pathogenic microorganisms are all disposed.But sometimes due to the major pollutants in medical waste gas and pathogenic microorganisms content too high, export still containing more major pollutants and pathogenic microorganisms at filter 5, fail to reach processing requirements.Therefore, need filter outlet water capacity, filter outlet pollutant load and filter outlet bacteria containing amount carry out detecting and judging, if testing result does not meet processing requirements, can close by valve 11 on the main exhaust pipeline that connects of valve 12 on ON cycle pipeline and main induced draft fan 6, by circulating fan 8 waste gas after process imported in reactor 4 again through circulating line and react.If testing result meets processing requirements, major pollutants and the pathogenic microorganisms of that is filter 5 outlet reach processing requirements, then close the valve 12 on circulating line, open the valve 11 on main exhaust pipeline, enter waste gas and discharge process.
Implementing step 6 of the present invention is that after process, waste gas is discharged.After the major pollutants that filter 5 exports and pathogenic microorganisms reach processing requirements, the valve opening on the main exhaust pipeline that main induced draft fan 6 connects.Waste gas after process device for transferring under the effect of main induced draft fan 6.When the valve 11 on main exhaust pipeline is closed, the air in outside atmosphere is introduced indoor by air inducing fan housing 7 by main induced draft fan.This on the one hand can continue to keep the stability and safety of main induced draft fan 6 to run when closing by the valve 11 on main exhaust pipeline; Also the exit gas gas flow temperature entering main induced draft fan 6 can effectively be reduced in medical waste gas treatment process on the other hand.
Implementing system of the present invention also needs measurement module 9 to process measuring-signal and automatic control module 10 carries out deduster 2, airtight heater 3, and the equipment of reactor 4, filter 5, main induced draft fan 6 and circulating fan 8 controls and the switch control rule of valve 11,12.Measuring-signal comprises: deduster porch dustiness detection signal, house outlet gas flow signals, airtight calorifier inlets temperature signal, airtight heater outlet temperature signal, airtight heater electrical power signal, reactor pressure signal, reactor outlet water capacity signal, filter outlet water capacity signal, filter outlet pollutant load detection signal, filter outlet bacteria containing amount detection signal, indoor environment air temperature signal, outdoor environment air temperature signal.Control signal comprises: the electrical power control signal of deduster, heater heating power control signal, the ejection frequency control signal of reaction reagent, the absorbing quantity control signal of circulating fan and main induced draft fan.Measure and controlling functions also by being distributed in sensor in various kinds of equipment and controller 13-18 realizes.
Implementing system of the present invention can preferably remove containing pathogenic microorganisms in medical waste gas, drug particles, the short grained occasion of soot dust granule, flue dust and aerosol.
Claims (9)
1. one kind is applicable to the process of Hospital medical waste gas and the system of safety dumping, it is characterized in that comprising with lower part: the deduster connected successively, airtight heater, reactor, filter, main induced draft fan and circulating fan, wherein deduster, airtight heater, reactor, filter are connected successively with the gas inlet and outlet of air-introduced machine; The entrance of circulating fan is connected with filter, and outlet is connected with reactor; First valve is set between filter and circulating fan, the second valve is set between filter and main induced draft fan; Described deduster, airtight heater, reactor, filter, main induced draft fan and circulating fan are all integrated in a compact equipment box;
The entrance of deduster equipment can be connected to be needed in waste gas bottle to be processed, also can adopt in the room that is directly placed on and needs to carry out medical exhaust-gas treatment; The outlet of deduster is connected on the entrance of airtight heater, and both directly adopt pipeline to connect;
The entrance and exit of airtight heater all has temperature detecting head; The heating power of heater controls automatically according to the temperature of outlet and entrance and the temperature difference; Waste gas can be heated to according to the Exhaust gas species of required process the temperature requirement meeting setting by heater, and fluctuates in very little scope;
Adopt the distribution grid loading reaction reagent in reactor, reaction reagent can conveniently be replaced as required, and reaction reagent can and add on distribution grid in processing procedure before exhaust-gas treatment; The distribution grid of reactor is detachable; There is in distribution grid multiple gas channel, having multiple aperture perpendicular on the wall of gas passage; There is in reactor reagent spray device, conveniently the reaction reagent of preloaded is injected in reactor; During gas channel in the distribution grid that off-gas flows is installed by inside reactor, the droplet of reaction reagent is mixed into the pollutant reaction with waste gas in air-flow by the multiple vertical aperture on passage, removes corresponding pollutant;
Place the filtration active carbon of some in advance according to the traffic requirement of flow of process air in filter; Reaction reagent in air-flow can all filter by the placement amount of active carbon and modes of emplacement;
Arrange temperature, pressure and flow sensor in systems in which, and obtained by measurement module and process measuring-signal, according to measuring-signal, automatic control module is to deduster, airtight heater, the duty of reactor and blower fan adjusts, to adapt to current medical exhaust-gas treatment demand;
Automatic control module can, by the design temperature requirement at any time of the needs of operator, according to when needing Main Ingredients and Appearance to be processed to obtain reaction temperature preferably in the waste gas of pre-treatment, make can obtain higher treatment effeciency in follow-up waste gas reaction process.
2. be applicable to the process of Hospital medical waste gas and the system of safety dumping according to claim 1, it is characterized in that described deduster, airtight heater, reactor, filter, main induced draft fan and circulating fan and between the first and second valves work under the control of the monitoring module of system configuration.
3. be according to claim 1ly applicable to the process of Hospital medical waste gas and the system of safety dumping, it is characterized in that also comprising air inducing fan housing, the entrance of described air inducing fan housing is placed in outdoor environment.
4. be according to claim 1ly applicable to the process of Hospital medical waste gas and the system of safety dumping, by control module adjustment electrostatic potential, discharge frequency and switch adjust the dust removing effects of deduster.
5. be according to claim 1ly applicable to the process of Hospital medical waste gas and the system of safety dumping; The Electrothermal ring that airtight heater adopts is placed on the inside wall of heater, and heater body and external environment condition sealing completely cut off; The externally fed of Electrothermal ring adopts Alternating Current Power Supply to control.
6. be according to claim 1ly applicable to the process of Hospital medical waste gas and the system of safety dumping, it is characterized in that the power of heater carries out regulating according to set control point temperature, heating power is slowly change.
7. be according to claim 1ly applicable to the process of Hospital medical waste gas and the system of safety dumping, it is characterized in that the two ends of reactor adopt bearing to connect; Reactor can adjust flexibly according to actual position of laying and lay level angle.
8. be according to claim 1ly applicable to the process of Hospital medical waste gas and the system of safety dumping, be gather to the measuring-signal of all connections simultaneously, do not adopt touring mode; The frequency of data acquisition is not less than 0.2 time/second.
9., for the process of Hospital medical waste gas and a method for safety dumping, it is characterized in that comprising the following steps:
(1) waste gas dedusting process: first medical waste gas enters deduster under the effect of air inducing air-flow; The dust collection method that deduster adopts is electrostatic precipitation mode; The dust removing effects of deduster can according to the control device adjustment electrostatic potential of system, discharge frequency and switch; Under the effect of control device, the electrostatic interaction of deduster is by most dust particle removings of waste gas; The germ be adsorbed in waste gas in dust particle also will remove thereupon;
(2) waste gas heating: the heating means of airtight heater adopt Electric heating; The Electrothermal ring that airtight heater adopts is placed on the inside wall of heater; Heater body and external environment condition sealing completely cut off; The externally fed of Electrothermal ring adopts Alternating Current Power Supply to control; Control heating source by the temperature control system attached by heater, the off-gas flows entering heater is heated uniformly; In heating process, the heating power that control system regulates heater to apply slowly changes, and the outlet temperature realizing waste gas fluctuates in very little scope according to the temperature requirement of setting; In general, the occasion that the inlet temperature of waste gas produces along with temperature and the waste gas of environment and changing to some extent, but can according to the Exhaust gas species requirement of process, and waste gas is heated to a specific temperature and sends from exit again; Conveniently can adjust temperature setting, make main composition to be processed in waste gas obtain reaction temperature preferably;
(3) exhaust-gas treatment course of reaction: waste gas can enter reactor and carry out the innoxious reaction treatment of waste gas after obtaining suitable reaction temperature; Because medical waste gas may result from special gas release in medical experiment heating, pharmacy solution evaporation, medical procedure, therefore, may containing a large amount of pathogenic microorganisms in medical treatment waste gas, and containing various medicine, flue gas, soot dust granule and aerosol particle small in a large number, so, reactor needs to possess multiple reaction reagent, thus can focus on all kinds of medical waste gas; There is in reactor reagent spray device, conveniently the reaction reagent of preloaded is injected in reactor; During gas channel in the distribution grid that off-gas flows is installed by inside reactor, the droplet of reaction reagent is mixed into the pollutant reaction with waste gas in air-flow by the multiple vertical aperture on passage, removes corresponding pollutant; Select suitable reaction reagent and can remove pathogenic microorganisms, drug particles, the soot dust granule in flue gas, the sulfide in flue dust and aerosol granule; Distribution grid can make medical waste gas air current flow evenly, higher with the droplet mixing efficiency of reaction reagent;
(4) waste gas filtering process: waste gas, after reactor carries out harmless treatment, enters filter; Place the filtration active carbon of some according to the traffic requirement of flow of process air in filter; Reaction reagent in air-flow can all filter by the placement amount of active carbon and modes of emplacement; Activated carbon also has a small amount of remaining droplet to adsorb to waste gas after the reaction, and adsorbs the part granule that may generate in reaction and sour gas; The effect of activated carbon be also likely exist in purifying exhaust air thoroughly a small amount of microorganism, granule, droplet and sour gas; In use for some time, the activity of active carbon can decline; Now, need to change the active carbon in filter or regenerate;
(5) EGR after process: generally, at waste gas after filter, major pollutants wherein and pathogenic microorganisms are all disposed; But sometimes due to the major pollutants in medical waste gas and pathogenic microorganisms content too high, may, at filter outlet still containing more major pollutants and pathogenic microorganisms, fail to reach processing requirements; Now again to import in reactor through circulating line by circulating fan and react; Now, the valve opening on circulating line, the valve closing on the main exhaust pipeline that main induced draft fan connects; Until the major pollutants of filter outlet and pathogenic microorganisms reach processing requirements, then close the valve on circulating line, open the valve on main exhaust pipeline;
(6) after process, waste gas is discharged: after the major pollutants of filter outlet and pathogenic microorganisms reach processing requirements, the valve opening on the main exhaust pipeline that main induced draft fan connects; Waste gas after process is device for transferring under the effect of main induced draft fan; When valve closing on main exhaust pipeline, the air in outside atmosphere is introduced indoor by air inducing fan housing by main induced draft fan; Such one side can continue to keep the stability and safety of main induced draft fan to run during valve closing on main exhaust pipeline; Also the exit gas gas flow temperature entering main induced draft fan can effectively be reduced in medical waste gas treatment process on the other hand.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310689963.2A CN103657325B (en) | 2013-12-16 | 2013-12-16 | A kind of process of Hospital medical waste gas and safe venting system |
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| CN201310689963.2A CN103657325B (en) | 2013-12-16 | 2013-12-16 | A kind of process of Hospital medical waste gas and safe venting system |
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| CN107185760B (en) * | 2017-06-05 | 2019-08-20 | 华南理工大学 | A kind of controllable circulation concentration lacquer spraying waste gas processing system |
| CN109144017A (en) * | 2018-10-18 | 2019-01-04 | 成都兴蓉环保科技股份有限公司 | Safe and environmentally friendly disposal system for hazardous chemical |
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