CN104760957B - The gas recovery system of silicon carbide smelting technique - Google Patents
The gas recovery system of silicon carbide smelting technique Download PDFInfo
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- CN104760957B CN104760957B CN201510029854.7A CN201510029854A CN104760957B CN 104760957 B CN104760957 B CN 104760957B CN 201510029854 A CN201510029854 A CN 201510029854A CN 104760957 B CN104760957 B CN 104760957B
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Abstract
The present invention relates to a kind of gas recovery system of silicon carbide smelting technique includes being in charge of gas recovery system, for filtering and collecting the waste gas of each branch line, detect oxygen concentration simultaneously；House steward's gas recovery system, concentrates the waste gas being in charge of gas recovery system collection described in each, by the concentration of oxygen in detected gas, controls waste gas high altitude discharge or enters gas pipeline；Gas delivery system, collects the waste gas of described gas pipeline transmission, then filter and detected gas concentration after be transported to by snorkel and use gas unit.Real-time monitoring of the present invention simultaneously controls the concentration of oxygen in waste gas, prevent substantial amounts of carbon monoxide and oxygen mix that situation about exploding occurs, safety and the property loss of workman are ensured, simultaneously secondary make use of the substantial amounts of carbon monoxide waste gas producing in silicon carbide smelting technique, and this gas be transported to each use gas department.
Description
Technical field
The present invention relates to gas recovery system is and in particular to a kind of waste gas for detecting and reclaiming silicon carbide smelting technique
Recovery system.
Background technology
Begin with linear type slot type resistance furnace silicon carbide smelting, going through over more than 100 year so far from American Acheson in 1891
History, there are family more than 200 of silicon carbide smelting enterprise, more than 220 ten thousand tons of yearly productive capacity in China.Carborundum processes Zhi Sha micropowder manufacturing enterprise
It is mainly distributed on Henan, Shandong, Jiangsu, Jilin, Heilungkiang etc. to save.
Carborundum (SiC) is to be that raw material is formed by resistance furnace pyrolytic semlting with quartz sand, coal.Because coal does not burn
But smelted by resistance stove heat, so producing substantial amounts of carbon monoxide, basic concentration reaches 70% about, abroad mainly looks forward to
Industry substantially achieves closing and smelts, and China's silicon carbide smelting almost all is open smelting, and carbon monoxide is all in line, leads
Air pollution and personnel's injury are caused.Carbon monoxide can combine with the hemoglobin in blood, due to an oxygen after entering human body
Change the binding ability that carbon and Hb BC hemoglobin binding capacity are much stronger than oxygen and hemoglobin, so enable be combined with oxygen blood red
Protein quantity drastically reduces, thus causing body tissue anoxia, leads to human body death by suffocation.So the sector is positive
Realize closed smelting, carbon monoxide waste gas all reclaims, and reaches the requirement of energy-conservation, reduction of discharging, environmental protection.But in the process reclaiming
In, the oxygen mix of substantial amounts of carbon monoxide and in the air, such as not accordingly detection, control method, then easily explode,
Lead to casualties and property loss.
Content of the invention
It is an object of the invention to provide a kind of gas recovery system of silicon carbide smelting technique, real-time monitoring simultaneously controls waste gas
The concentration of middle oxygen, prevents substantial amounts of carbon monoxide from exploding with oxygen mix, recycling silicon carbide smelting simultaneously
The substantial amounts of carbon monoxide producing in technique.
The purpose of the present invention is to be achieved through the following technical solutions：
A kind of gas recovery system of silicon carbide smelting technique is it is characterised in that include：It is in charge of gas recovery system, use
In the waste gas filtering and collecting each branch line, detect oxygen concentration simultaneously；House steward's gas recovery system, concentrates described in each
It is in charge of the waste gas of gas recovery system collection, by the concentration of oxygen in detected gas, control waste gas high altitude discharge or entrance
Gas pipeline；Gas delivery system, collects the waste gas of described gas pipeline transmission, then passes through after filtration detected gas concentration
Snorkel is transported to uses gas unit.
Further, described gas recovery system of being in charge of includes connecting the gas-distributing pipe of carborundum resistance furnace, described gas-distributing pipe
Connect and reclaim valve, described recovery valve connects fine filter by trachea, described fine filter is connected respectively by trachea
Connect the first electrically operated valve and moisture trap, described moisture trap connects automatic drain device and air pump respectively by trachea,
Described air pump connects gas analyzer for O2 by trachea, and described first electrically operated valve is fixedly connected gas main.
Further, it is provided with spark arrester between described fine filter and moisture trap.
Further, house steward's gas recovery system includes some described gas mains, and every described gas main is all connected with second
Electrically operated valve, described second electrically operated valve connects air exhauster by trachea, and described air exhauster connects the 3rd electricity respectively by trachea
Movable valve, the 4th electrically operated valve and electromagnetic valve, described 3rd electrically operated valve connecting gas transmission pipe road, described 4th electrically operated valve passes through
Trachea connects high altitude discharge mouth, and described electromagnetic valve connects gas-detecting device and described gas pipeline respectively by trachea.
Further, it is provided with first pressure sensor between described second electrically operated valve and air exhauster.
Further, it is equipped with temperature sensor before described 3rd electrically operated valve and the 4th electrically operated valve.
Further, described gas pipeline is provided with gas flowmeter.
Further, described gas delivery system includes the 5th electrically operated valve connecting described gas pipeline, described
5th electrically operated valve connects spray column by trachea, is provided with first and diffuses between described 5th electrically operated valve and described spray column
Pipe, described spray column connects second gas detection means by trachea, and described second gas detection means is connected by trachea and adds
Pressure fan, described booster fan by trachea be sequentially connected the second exhaust stack, gas flow sensor, second pressure sensor with
Described snorkel.
Further, described spray column and second gas detection means are equipped with bypass air flue, on described bypass air flue all
It is provided with bypass valve.
Beneficial effects of the present invention are：Real-time monitoring of the present invention simultaneously controls the concentration of oxygen in waste gas it is therefore prevented that substantial amounts of
Carbon monoxide and oxygen mix and there is situation about exploding, ensured safety and the property loss of workman, simultaneously secondary make use of
The substantial amounts of carbon monoxide waste gas producing in silicon carbide smelting technique, and this gas is transported to each uses gas department.
Brief description
Below according to accompanying drawing, the present invention is described in further detail.
Fig. 1 is the pipeline schematic diagram being in charge of gas recovery system described in the embodiment of the present invention；
Fig. 2 is the pipeline schematic diagram of house steward's gas recovery system described in the embodiment of the present invention；
Fig. 3 is the pipeline schematic diagram of gas delivery system described in the embodiment of the present invention.
In figure：
1st, carborundum resistance furnace；2nd, reclaim valve；3rd, fine filter；4th, the first electrically operated valve；5th, spark arrester；6th, air water
Separator；7th, automatic drain device；8th, air pump；9th, gas analyzer for O2；10th, bronchus；11st, hub；12nd, gas main；13rd,
Two electrically operated valves；14th, air exhauster；15th, first pressure sensor；16th, the 3rd electrically operated valve；17th, gas pipeline；18th, the 4th electricity
Movable valve；19th, high altitude discharge mouth；20th, electromagnetic valve；21st, first gas detection means；22nd, gas flowmeter；23rd, temperature sensing
Device；24th, the 5th electrically operated valve；25th, spray column；26th, second gas detection means；27th, bypass valve；28th, the first exhaust stack；29、
First booster fan；30th, the second booster fan；31st, the second exhaust stack；32nd, gas flow sensor；33rd, second pressure sensing
Device；34th, snorkel.
Specific embodiment
As Figure 1-3, the gas recovery system of a kind of silicon carbide smelting technique described in the embodiment of the present invention, including point
Pipe gas recovery system, for filtering and collecting the waste gas of each branch line, detects oxygen concentration simultaneously；House steward's waste gas recovery
System, concentrates the waste gas being in charge of gas recovery system collection described in each, by the concentration of oxygen in detected gas, controls waste gas
High altitude discharge or entrance gas pipeline 17；Gas delivery system, collects the waste gas of described gas pipeline 17 transmission, then filters
And be transported to by snorkel 34 after detected gas concentration and use gas unit.
As shown in figure 1, described gas recovery system of being in charge of includes connecting the recovery valve 2 of carborundum resistance furnace 1 air vent,
Described recovery valve 2 connects fine filter 3 by trachea, and for the dust-filtering of gas, described fine filter 3 passes through gas
Pipe connects the first electrically operated valve 4 and spark arrester 5 respectively, and described spark arrester 5 is used for preventing spreading of pipeline flame, plays protection
The effect of equipment, described spark arrester 5 connects moisture trap 6 by trachea, and described moisture trap 6 is connected respectively by trachea
Automatic drain device 7 and air pump 8, described waste gas takes off liquid by moisture trap 6, and the liquid then accumulating passes through automatic drain device
7 discharges, described air pump 8 connects, by trachea, the concentration that gas analyzer for O2 9 detects oxygen, and described first electrically operated valve 4 connects
Bronchus 10, some described bronchus 10 all connect gas main 12 by hub 11.
As shown in Fig. 2 house steward's gas recovery system includes some described gas mains 12, every described gas main 12 is all connected with
Second electrically operated valve 13, described second electrically operated valve 13 by trachea connect air exhauster 14, described second electrically operated valve 13 with take out
Be provided with first pressure sensor 15 between blower fan 14, described air exhauster 14 by trachea connect respectively the 3rd electrically operated valve 16,
Four electrically operated valves 18 and electromagnetic valve 20, described 3rd electrically operated valve 16 connecting gas transmission pipe road 17, described 4th electrically operated valve 18 leads to
Cross trachea and connect high altitude discharge mouth 19, it is defeated with described that described electromagnetic valve 20 connects first gas detection means 21 respectively by trachea
Feed channel 17, described gas pipeline 17 is provided with gas flowmeter 22；Described 3rd electrically operated valve 16 and the 4th electrically operated valve 18
Before be equipped with temperature sensor 23, for detecting tracheal strips temperature, if temperature is too high easily makes gas burst, cause danger.
Described first gas detection means 21 detects CO, the O in pipeline2、CH4、H2The content of four kinds of gases, thus draw
The concentration of oxygen, when oxygen concentration is higher than 4%, converter air exhauster 14 reduces rotating speed；After changing rotating speed, oxygen concentration is still high
When 4%, described 4th electrically operated valve 18 is opened, by exceeded gas high altitude discharge；When oxygen concentration is less than 4%, the 3rd is electronic
Valve 16 is opened, and acceptable gas enter gas pipeline 17.
As shown in figure 3, described gas delivery system includes connecting the 5th electrically operated valve 24 of described gas pipeline 17, described
5th electrically operated valve 24 connects spray column 25 by trachea, and for purification gas, the rear and front end of described spray column 25 is equipped with
Valve, for protecting and controlling spray column 25, described spray column 25 is equipped with bypass air flue, institute with second gas detection means 26
State and be equipped with bypass valve 27 on bypass air flue, bypass valve 27 is opened when the hypertonia in main trachea, alleviate main endotracheal pressure
Power, plays the effect protecting main trachea；It is provided with the first exhaust stack 28 between described 5th electrically operated valve 24 and described spray column 25,
For carrying out overpressure protection to upstream device, higher to pressure, gas is diffused flow velocity faster, and exhaust stack should arrange resistance
Firearm 5.
Described spray column 25 connects second gas detection means 26 by trachea, before described second gas detection means 26
Two ends are equipped with valve afterwards, and for controlling gas to enter second gas detection means 26, described second gas detection means 26 is led to
Cross trachea and connect booster fan, described booster fan is controlled by frequency conversion tank system, and described booster fan is connected successively by trachea
Connect the second exhaust stack 31, gas flow sensor 32, second pressure sensor 33 and described snorkel 34, gas pressurizes in blower fan
Afterwards, pressure is 5KP, and then gas enters steam power plant by snorkel 34 or other use gas place, when pipeline pressure increases to 7KP
When it is believed that being broken down with gas place, then frequency conversion tank system reduce booster fan rotating speed, to ensure safety.
Real-time monitoring of the present invention and control oxygen in waste gas concentration it is therefore prevented that substantial amounts of carbon monoxide and oxygen mix and
There is the situation of blast, ensured safety and the property loss of workman, simultaneously secondary make use of in silicon carbide smelting technique produces
Substantial amounts of carbon monoxide waste gas, and by this gas be transported to each use gas department, real-time monitoring overpressure simultaneously, when pipeline pressure
When power is too high, by reducing booster fan rotating speed, realize reducing manifold pressure, to ensure the safety of whole system.
The present invention is not limited to above-mentioned preferred forms, and anyone can show that under the enlightenment of the present invention other are various
The product of form, however, making any change in its shape or structure, every have skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (6)
1. a kind of gas recovery system of silicon carbide smelting technique is it is characterised in that include：
It is in charge of gas recovery system, for filtering and collecting the waste gas of each branch line, detect oxygen concentration simultaneously；
House steward's gas recovery system, concentrates the waste gas being in charge of gas recovery system collection described in each, by oxygen in detected gas
The concentration of gas, controls waste gas high altitude discharge or enters gas pipeline；
Gas delivery system, collects the waste gas of described gas pipeline transmission, then passes through to supply gas after filtration detected gas concentration
Pipe is transported to uses gas unit；
Described gas recovery system of being in charge of includes connecting the gas-distributing pipe of carborundum resistance furnace, and described gas-distributing pipe connects recovery valve,
Described recovery valve connects fine filter by trachea, and described fine filter connects the first electrically operated valve respectively by trachea
With moisture trap, described moisture trap connects automatic drain device and air pump respectively by trachea, and described air pump passes through
Trachea connects gas analyzer for O2, and described first electrically operated valve is fixedly connected gas main；
House steward's gas recovery system includes some gas mains, and every described gas main is all connected with the second electrically operated valve, and described second
Electrically operated valve connects air exhauster by trachea, and described air exhauster connects the 3rd electrically operated valve, the 4th electrodynamic valve respectively by trachea
Door and electromagnetic valve, described 3rd electrically operated valve connecting gas transmission pipe road, described 4th electrically operated valve connects high altitude discharge by trachea
Mouthful, described electromagnetic valve connects gas-detecting device and described gas pipeline respectively by trachea；
Described gas delivery system includes the 5th electrically operated valve connecting described gas pipeline, and described 5th electrically operated valve passes through gas
Pipe connects spray column, is provided with the first exhaust stack between described 5th electrically operated valve and described spray column, and described spray column passes through gas
Pipe connects second gas detection means, and described second gas detection means connects booster fan, described booster fan by trachea
Second exhaust stack, gas flow sensor, second pressure sensor and described snorkel are sequentially connected by trachea.
2. gas recovery system according to claim 1 it is characterised in that：Described fine filter and moisture trap it
Between be provided with spark arrester.
3. gas recovery system according to claim 1 it is characterised in that：Between described second electrically operated valve and air exhauster
It is provided with first pressure sensor.
4. gas recovery system according to claim 1 it is characterised in that：Described 3rd electrically operated valve and the 4th electrodynamic valve
It is equipped with temperature sensor in front of the door.
5. gas recovery system according to claim 1 it is characterised in that：Described gas pipeline is provided with gas flow
Meter.
6. gas recovery system according to claim 1 it is characterised in that：Described spray column and second gas detection means
It is equipped with bypass air flue, described bypass air flue is equipped with bypass valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510029854.7A CN104760957B (en) | 2015-01-21 | 2015-01-21 | The gas recovery system of silicon carbide smelting technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510029854.7A CN104760957B (en) | 2015-01-21 | 2015-01-21 | The gas recovery system of silicon carbide smelting technique |
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| CN104760957A CN104760957A (en) | 2015-07-08 |
| CN104760957B true CN104760957B (en) | 2017-03-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106499954A (en) * | 2016-11-03 | 2017-03-15 | 北京航天试验技术研究所 | A kind of hydrogen manages safe venting system concentratedly |
| CN109231213B (en) * | 2018-08-28 | 2023-07-25 | 平罗县滨河碳化硅制品有限公司 | Environment-friendly energy-saving mountain-shaped silicon carbide smelting tail gas recovery device and recovery method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61232213A (en) * | 1985-04-08 | 1986-10-16 | Bridgestone Corp | Production of silicon carbide |
| CN101337673A (en) * | 2007-07-05 | 2009-01-07 | 贾玉东 | Refining furnace of silicon carbide for recovering smelting waste gases |
| CN102557030A (en) * | 2011-12-09 | 2012-07-11 | 邵水源 | Tail gas collecting system of silicon carbide smelting furnace |
| CN104129787A (en) * | 2014-08-18 | 2014-11-05 | 宋克纯 | Silicon carbide smelting equipment applied to tail gas recovery |
-
2015
- 2015-01-21 CN CN201510029854.7A patent/CN104760957B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61232213A (en) * | 1985-04-08 | 1986-10-16 | Bridgestone Corp | Production of silicon carbide |
| CN101337673A (en) * | 2007-07-05 | 2009-01-07 | 贾玉东 | Refining furnace of silicon carbide for recovering smelting waste gases |
| CN102557030A (en) * | 2011-12-09 | 2012-07-11 | 邵水源 | Tail gas collecting system of silicon carbide smelting furnace |
| CN104129787A (en) * | 2014-08-18 | 2014-11-05 | 宋克纯 | Silicon carbide smelting equipment applied to tail gas recovery |
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| CN104760957A (en) | 2015-07-08 |
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