CN106051792A - RTO (regenerative thermal oxidizer) regenerative thermal oxidation system - Google Patents
RTO (regenerative thermal oxidizer) regenerative thermal oxidation system Download PDFInfo
- Publication number
- CN106051792A CN106051792A CN201610369176.3A CN201610369176A CN106051792A CN 106051792 A CN106051792 A CN 106051792A CN 201610369176 A CN201610369176 A CN 201610369176A CN 106051792 A CN106051792 A CN 106051792A
- Authority
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- China
- Prior art keywords
- regenerator
- burner
- gas
- rto
- plc control
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
- F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
- F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50213—Preheating processes other than drying or pyrolysis
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a RTO (regenerative thermal oxidizer) regenerative thermal oxidation system and relates to the technical field of organic waste gas treatment. The RTO regenerative thermal oxidation system comprises an oxidizer body and a PLC control system body. The oxidizer body is internally provided with a thermal oxidation chamber and three regenerative chambers. The thermal oxidation chamber is connected with a gas pipeline and provided with a burner and a burner ignition system body. A flame detector is further arranged in the thermal oxidation chamber. The flame detector and the burner ignition system body are in interlock control through the PLC control system body. The thermal oxidation chamber is further connected with a temperature detector. The temperature detector and the burner are in interlock control through the PLC control system body. The temperature detector and the burner are in interlock control, the burner can be adjusted in real time according to the temperature in an oxidizer, and then the temperature in the oxidizer can be adjusted. The flame detector detects whether flame in the oxidizer is extinguished or not, if yes, the PLC control system body controls the ignition system body to continuously ignite, and the system safety is improved.
Description
Technical field
The present invention relates to VOCs treatment technical field, be specifically related to the regenerative oxidation system of a kind of high security.
Background technology
RTO, is a kind of efficiently VOCs treatment equipment.With traditional catalysis burning, direct-fired thermal oxidation furnace (TO) phase
Ratio, has the thermal efficiency high (>=95%), operating cost is low, can process the features such as large-wind-volume low-concentration waste gas, when concentration is slightly higher, also
Secondary waste heat recovery can be carried out, be substantially reduced production and operation cost.
RTO (Regenerative Thermal Oxidizer is called for short RTO), heat accumulating type oxidation furnace.Its principle is at height
Under temperature, combustible exhaust gas is oxidized to oxide and the water of correspondence, thus purifies waste gas, and discharged when reclaiming waste gas decomposition
Heat, waste gas decomposition efficiency reaches more than 99%, and heat recovery efficiency reaches more than 95%.RTO agent structure is by combustor, pottery
The compositions such as porcelain filling bed and switching valve.According to client's actual demand, select different energy recovery modes and switching valve mode.
Existing regenerator oxidation furnace is more to the thermal efficiency, waste gas resolution ratio research, and tends to ignore body of heater peace
The attention of full property, such as, lack and temperature, the monitoring of pressure, and furnace flame be there will be Quench.Such as Authorization Notice No. CN
The patent document of 204329040 U discloses kind of novel RTO accumulation of heat incinerator by body of heater, magnetic layers of balls, honeycomb heat accumulation body I, storage
Hot cell I, Fuel Control System, burner I, thermocouple, relief valve, burner hearth, heat exchanger I, burner II, chimney, air control system for air,
Regenerator II, wicket, waste gas filter, exhaust piping, flue, heat exchanger II, blower fan I, II, two four-way electromagnetics of blower fan
Reversal valve, burner III, burner IV, honeycomb heat accumulation body II and pipeline composition.Four burners are arranged in a certain way, it is achieved that flame
Shunting make burner hearth in Temperature Distribution evenly, it is to avoid cause the generation of temperature mode nitrogen oxides because local temperature is too high.
By waste gas filter, magnetic layers of balls twice waste gas filter progress, to the filtration of bulky grain thing and reduce honeycomb heat accumulation body
Corrosion, extend the life-span of honeycomb heat accumulation body, improve the efficiency of exhaust-gas treatment.Utilize heat exchanger that the waste heat of flue gas is carried out
Recycle.But this regenerative oxidation stove is not directed to the consideration of safety in stove.
Summary of the invention
The technical problem to be solved in the present invention be to provide one can real-time monitoring in-furnace temperature, prevent furnace flame extinguish make
Become the regenerative oxidation system of potential safety hazard.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is: a kind of RTO regenerative oxidation system, including
Body of heater and PLC control system, be provided with thermal oxidizer and three regenerator in body of heater, oxidizing chamber connects gas pipeline and at oxidizing chamber
Burner and burner ignition system are set, in described oxidizing chamber, are provided with flame detector, described flame detector and burner
Ignition system realizes interlocked control by PLC control system, and thermal oxidizer is also connected with a temperature detector, and temperature detector leads to
Cross PLC control system and realize interlocked control with burner.
Further, being additionally provided with gas distributing chamber and smoke distribution room in described body of heater, each regenerator is all by pneumatic
Valve is connected with gas distributing chamber and smoke distribution room respectively, and smoke distribution room is connected with chimney by pipeline, and gas distributing chamber sets
There are waste gas inlet, regenerator to connect with thermal oxidizer, the connection pipeline of smoke distribution room and chimney is also connected with a blowback
Blower fan, back blowing machine is connected with each regenerator by being provided with the pipeline of pneumatic operated valve.
Further, also include that regenerator temperature detector, the burner of regenerator temperature detector and oxidizing chamber pass through
PLC control system realizes interlocked control, is provided with multiple thermocouple in described regenerator temperature detector, and thermocouple is at vertical direction
It is disposed in regenerator.
Further, pneumatic between pneumatic operated valve and regenerator and the smoke distribution room between regenerator and gas distributing chamber
This part of valve realizes interlocked control by PLC, is provided with and PLC control system at the waste gas inlet of described gas distributing chamber
The VOC detector connected, the gas pipeline connected with thermal oxidizer is provided with spark arrester.
Can be seen that the present invention has following advantages, temperature detector and burner interlocked control from technique scheme,
Can regulate burner and then regulation in-furnace temperature in real time according to in-furnace temperature, whether flame detector detection furnace flame extinguishes,
If extinguishing, PLC control system controls ignition system and continues igniting, and gas distributing chamber is that point railway carriage or compartment carries out flue gas and puts with waste gas blowback
Changing, gas inlet, flue gas air draft separately individually complete, and utilize the wheel body function of blowback room switching time, it is ensured that shift to an earlier date or delayed
Design is staggered action switching time, it is ensured that all waste gas all pass through for a long time, high temperature, the high temperature of " 3T " principle of high turbulent vortices
Oxidation, it is ensured that the absolutely not short circuit phenomenon in short-term in handoff procedure occurs.
Accompanying drawing explanation
Fig. 1 is the P&ID flow chart of the present invention.
Fig. 2 is the PLC control system flow chart of native system.
Detailed description of the invention
In conjunction with Fig. 1 and Fig. 2, describe a specific embodiment of the present invention in detail, but the claim of the present invention is not done
Any restriction.
As it is shown in figure 1, the oxidation accumulation of heat system of the present invention is logical mainly includes body of heater and PLC control system, set in body of heater
Having thermal oxidizer and three regenerator, be additionally provided with gas distributing chamber and smoke distribution room in body of heater, each regenerator all passes through gas
Dynamic valve is connected with gas distributing chamber and smoke distribution room respectively, and smoke distribution room is connected with chimney by pipeline, gas distributing chamber
Being provided with waste gas inlet, regenerator connects with thermal oxidizer, the connection pipeline of smoke distribution room and chimney is also connected with one instead
Hair-dryer, back blowing machine is connected with each regenerator by being provided with the pipeline of pneumatic operated valve.Three regenerator are yi word pattern horizontal row
Row.
Gas distributing chamber is that point railway carriage or compartment carries out flue gas and waste gas blowback displacement, and gas inlet, flue gas air draft separately individually complete,
Utilize the wheel body function of blowback room switching time, it is ensured that in advance or delayed design is staggered action switching time, it is ensured that all waste gas
All pass through long-time, high temperature, the high-temperature oxydation of " 3T " principle of high turbulent vortices, it is ensured that the absolutely not short circuit in short-term in handoff procedure
Phenomenon occurs.Special low-temperature flue gas back-flushing technique, had both replaced the waste gas being in low-temperature zone, it is ensured that waste gas is all through high temperature section oxygen
Change；A small amount of, the pulsed blowback of relatively high pressure of backflow flue gas can be utilized again, prevent organic low-temperature oxidation in waste gas from producing
The bee-hole of blocking heat storage is built up in raw carbon granule absorption.The periodicity reduced in maintenance work returns burning frequency, it is ensured that regenerative furnace
Long-time stable work.
Regenerative oxidation start-up:
Exhaust gas inlet valve (pneumatic operated valve between regenerator and gas distributing chamber) and blowback valve (regenerator and back-blowing
Pneumatic operated valve on machine pipeline) all close, open fume emission valve (pneumatic operated valve between regenerator and smoke distribution room) successively,
Three regenerator are heated to running status by start-up burner automatic ignition the most one by one.
Fresh air is directly entered RTO main body and preheats, and after separated in time T, air valve door automatically switches, gas
Body changes flow direction between A, B, C bed.This process operation may be trapped in the residual organic waste of RTO device interior for emptying
Gas, in order to avoid causing danger when igniting.After 5-10 minute, controlling to open combustion system by PLC, buner system starts automatically
Igniting, the temperature of thermal storage ceramic packed bed gradually rises, and after about about 3 hours, ceramic bed top reaches about 800 DEG C, and middle part reaches
To about 400 DEG C, about 100 DEG C, bottom.Now, warm terminates.
Time properly functioning, a complete thermal oxide cyclic flow is as follows:
Waste gas is drawn into regenerator A through blower fan and is preheating to about 750 DEG C, and the waste gas after preheating enters thermal oxidizer oxidation
Decomposing, under the effect of combustion-supporting fuel, in waste gas, the contained fully oxidized decomposition of Organic substance, makes oxidizing temperature maintain 800～850
About DEG C, the flue gas of generation is after the heat release of regenerator C, by smoke stack emission to air.
Back blowing machine extraction partial fume purges to regenerator B, gets rid of the waste gas of residual in regenerator B.During switching
Between arrive after, by automaton, open the smoke draining valve of regenerator B, simultaneously close off the smoke evacuation air valve of regenerator C
Door, then open the exhaust gas inlet valve of regenerator C, close the exhaust gas inlet valve of regenerator A, the waste gas opening regenerator A blows
Sweep valve, after certain time, close the waste gas purging valve of regenerator A.
In one cycle of operation, each valve state such as following table:
| Regenerator | A | B | C | A | B | C | A | B | C |
| Exhaust gas inlet valve | Open | Close | Close | Close | Close | Open | Close | Open | Close |
| Exhanst gas outlet valve | Close | Close | Open | Close | Open | Close | Open | Close | Close |
| Waste gas purging valve | Close | Open | Close | Open | Close | Close | Close | Close | Open |
In one cycle of operation, each regenerator state such as following table:
Thermal oxidizer liner uses ceramic fibre, and outermost layer is with steel plate as protective layer, and regenerator uses honeycomb regenerator pottery.
Ceramic material can be that cordierite, mullite, oxidation be siliceous, corundum mullite rock, fine and close cordierite, fine and close mullite
Deng.
Oxidizing chamber connects gas pipeline and arranges furnace lifting combustion system at oxidizing chamber, and furnace lifting combustion system is split type, by
Cyclelog, ignition transformer, ignitor, photoconductive resistance, nozzle composition.Photoconductive resistance and ignition system (Motor for ignition
Form with ignition transformer) realize interlocked control by PLC control system, thermal oxidizer is also connected with a temperature detector, main
If thermocouple, temperature detector realizes interlocked control, each accumulation of heat by PLC control system and burner (mainly nozzle)
Room also is provided with temperature detector, and the temperature detector of each regenerator is provided with multiple thermocouple, and each thermocouple is arranged on accumulation of heat
The upper and lower diverse location in room, for detecting the temperature of regenerator different parts, regenerator temperature detector and the burner of oxidizing chamber
Realizing interlocked control by PLC control system, the temperature signal fed back by thermocouple, PLC control system is burnt by regulation
Device automatic control and adjustment, the pneumatic operated valve between pneumatic operated valve and regenerator and smoke distribution room between regenerator and gas distributing chamber
This part realizes interlocked control by PLC.PLC control system is provided with fault-signal module, and fault-signal module is with pneumatic
Valve interlocked control.
Blower fan additionally configures according to furnace pressure, and after burner starts, burner runs locking lamp instruction and runs.When
Such as occurring accident extinguishing in furnace lifting running, photoconductive resistance can't detect flame, and cyclelog autostop, fault export
And run locking, ignition trigger program can be restarted after time delay unlocks.Thermal oxidizer flame detector and burning
Device ignition system interlocked control, 3 seconds missing of ignition, and electromagnetic valve is automatically switched off, and lights a fire after purging 3 minutes again.
The VOC detector being connected with PLC control system it is provided with at the waste gas inlet of gas distributing chamber.With thermal oxidizer even
Logical gas pipeline is provided with spark arrester.VOC detector it is provided with, when exhaust gas concentration reaches LEL at exhaust gas inlet
When 20%, by regulation desorption exhaust pipe valve, it is ensured that security of system, spark arrester is used to stop inflammable gas, liquid
Propagation of flame and prevent tempering and the safety device that sets off an explosion.Be commonly mounted in conveying or discharge flammable explosive gas storage tank and
On pipeline.
Native system uses PLC to automatically control, and is provided with centralized Control and controls on the spot, and system is responsible for exhaust-gas treatment facilities
Each power-equipment is implemented power supply and automatically controls.To the temperature of the running status of key equipment, key point in oxidation treatment device
Monitored with pressure.For ensureing the properly functioning of exhaust treatment system, the design is by gathering and transmission temperature, the ginseng of pressure
Number variable signal reaches the safety protection function of automatic control oxidation and Self-control interlock.
It is understood that above with respect to the specific descriptions of the present invention, be merely to illustrate the present invention and be not limited to this
Technical scheme described by inventive embodiments.It will be understood by those within the art that, still the present invention can be carried out
Amendment or equivalent, to reach identical technique effect；As long as meet use needs, all protection scope of the present invention it
In.
Claims (10)
1. a RTO regenerative oxidation system, including body of heater and PLC control system, is provided with thermal oxidizer and three accumulation of heats in body of heater
Room, oxidizing chamber connects gas pipeline and arranges burner and burner ignition system at oxidizing chamber, it is characterised in that: described oxidation
Indoor are provided with flame detector, and described flame detector and burner ignition system realize interlocked control by PLC control system,
Thermal oxidizer is also connected with a temperature detector, and temperature detector realizes interlocked control by PLC control system and burner.
RTO regenerative oxidation system the most according to claim 1, it is characterised in that: it is additionally provided with gas distribution in described body of heater
Room and smoke distribution room, each regenerator is all connected with gas distributing chamber and smoke distribution room respectively by pneumatic operated valve, and flue gas divides
Cloth room is connected with chimney by pipeline, and gas distributing chamber is provided with waste gas inlet, and regenerator connects with thermal oxidizer, smoke distribution
Being also connected with a back blowing machine on the connection pipeline of room and chimney, back blowing machine is by being provided with the pipeline of pneumatic operated valve and each accumulation of heat
Room connects.
RTO regenerative oxidation system the most according to claim 1, it is characterised in that: also include regenerator temperature detector, store
The burner of hot cell temperature detector and oxidizing chamber realizes interlocked control by PLC control system.
RTO regenerative oxidation system the most according to claim 3, it is characterised in that: set in described regenerator temperature detector
Having multiple thermocouple, thermocouple is in vertical direction is disposed on regenerator.
RTO regenerative oxidation system the most according to claim 1, it is characterised in that: described three regenerator are yi word pattern water
Flat raft arranges.
RTO regenerative oxidation system the most according to claim 2, it is characterised in that: between regenerator and gas distributing chamber
This part of pneumatic operated valve between pneumatic operated valve and regenerator and smoke distribution room realizes interlocked control by PLC.
RTO regenerative oxidation system the most according to claim 6, it is characterised in that: the gas inlet of described gas distributing chamber
The VOC detector being connected with PLC control system it is provided with at Kou.
RTO regenerative oxidation system the most according to claim 1, it is characterised in that: the gas pipeline connected with thermal oxidizer
It is provided with spark arrester.
RTO regenerative oxidation system the most according to claim 1, it is characterised in that: thermal oxidizer liner uses ceramic fibre,
Outermost layer is with steel plate as protective layer, and regenerator uses honeycomb regenerator pottery.
RTO regenerative oxidation system the most according to claim 1, it is characterised in that: described PLC control system is provided with fault
Signaling module, fault-signal module and pneumatic operated valve interlocked control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369176.3A CN106051792A (en) | 2016-05-30 | 2016-05-30 | RTO (regenerative thermal oxidizer) regenerative thermal oxidation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369176.3A CN106051792A (en) | 2016-05-30 | 2016-05-30 | RTO (regenerative thermal oxidizer) regenerative thermal oxidation system |
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| CN106051792A true CN106051792A (en) | 2016-10-26 |
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Family Applications (1)
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| CN201610369176.3A Pending CN106051792A (en) | 2016-05-30 | 2016-05-30 | RTO (regenerative thermal oxidizer) regenerative thermal oxidation system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525092A (en) * | 2017-10-18 | 2017-12-29 | 西安昱昌环境科技有限公司 | Rotary RTO temperature control system and method |
| CN109028108A (en) * | 2017-01-26 | 2018-12-18 | 化学热处理技术股份有限公司 | Technique and device for waste gas purification |
| CN109404937A (en) * | 2018-12-01 | 2019-03-01 | 江苏振达环保科技有限公司 | A kind of RTO exhaust gas combustion-supporting system |
| CN110888372A (en) * | 2019-12-10 | 2020-03-17 | 清远市精旺环保设备有限公司 | Multi-parameter self-adaptive combustor controller |
| CN112169535A (en) * | 2020-09-30 | 2021-01-05 | 广州骁庆科技有限公司 | Extraction device and extraction method for coal mine ventilation air methane |
| CN114234213A (en) * | 2021-12-29 | 2022-03-25 | 南京宇清环境科技有限公司 | Online energy-saving heat-storage catalytic combustion waste gas purification intelligent monitoring system and method |
| CN114427686A (en) * | 2022-02-11 | 2022-05-03 | 中科卓异环境科技(东莞)有限公司 | Combustion device and volatile organic compound treatment method |
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| JP2002303415A (en) * | 2001-04-03 | 2002-10-18 | Chugai Ro Co Ltd | Method for removing high boiling point substance in regenerative combustion type gas treating apparatus |
| CN201706514U (en) * | 2010-05-20 | 2011-01-12 | 江苏大信环境科技有限公司 | Heat accumulating type waste gas incinerator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028108A (en) * | 2017-01-26 | 2018-12-18 | 化学热处理技术股份有限公司 | Technique and device for waste gas purification |
| CN107525092A (en) * | 2017-10-18 | 2017-12-29 | 西安昱昌环境科技有限公司 | Rotary RTO temperature control system and method |
| CN109404937A (en) * | 2018-12-01 | 2019-03-01 | 江苏振达环保科技有限公司 | A kind of RTO exhaust gas combustion-supporting system |
| CN110888372A (en) * | 2019-12-10 | 2020-03-17 | 清远市精旺环保设备有限公司 | Multi-parameter self-adaptive combustor controller |
| CN112169535A (en) * | 2020-09-30 | 2021-01-05 | 广州骁庆科技有限公司 | Extraction device and extraction method for coal mine ventilation air methane |
| CN114234213A (en) * | 2021-12-29 | 2022-03-25 | 南京宇清环境科技有限公司 | Online energy-saving heat-storage catalytic combustion waste gas purification intelligent monitoring system and method |
| CN114427686A (en) * | 2022-02-11 | 2022-05-03 | 中科卓异环境科技(东莞)有限公司 | Combustion device and volatile organic compound treatment method |
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