CN201155766Y

CN201155766Y - Micro differential pressure micro dynamic power methane combustion apparatus

Info

Publication number: CN201155766Y
Application number: CNU2007200573812U
Authority: CN
Inventors: 陈力生; 梁多强
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-24
Filing date: 2007-09-24
Publication date: 2008-11-26
Anticipated expiration: 2017-09-24

Abstract

The utility model relates to the field of environmental protection, in particular to a micro pressure difference and micro power methane incineration device which can be used in the exhaust treatment. The incineration device comprises an anaerobic reaction tank or a closed refuse landfill which is provided with an air exhaust well pipe; wherein, the air exhaust well pipe is connected with a methane branch pipe which is connected with a gas accumulator tank; the gas accumulator tank is connected with a torch pipe, on the top of which a burner and an overpressure protection electromagnetic valve are arranged. The burner and the overpressure protection electromagnetic valve are respectively connected with an electronic pulse igniter. A pressure sensor is arranged on the gas accumulator tank and respectively connected with the electronic pulse igniter and the overpressure protection electromagnetic valve; and a pressure safety valve is arranged on the methane branch pipe. All kinds of poisonous and harmful exhaust gas can be treated through the combustion method; wherein, methane can be combusted by heat to achieve purification rate by above 90 percent, thereby reducing the environmental pollution and avoiding the impact on human settlement and health.

Description

Minute-pressure is poor, microkinetic methyl hydride combustion device

Technical field

The utility model relates to the environmental protection field, belongs to specifically that the minute-pressure of handling waste gas is poor, microkinetic methyl hydride combustion device.

Background technology

Global warming, caused the concern of various circles of society, signed " the United Nations's weather framework convention " the Chinese government in 1993, checked and approved Kyoto Protocol in 2002 again, in order to fulfil pact, international organizations such as China and United Nations Development Programme, economic society affairs portion of the United Nations carry out cooperation in control greenhouse gas emission, realization garbage harmless, resource field; Wherein methane molecule influences greenhouse effects the most, and methane molecule is 21 times an of carbon dioxide molecule, how to reduce discharging methane and reduces contaminated environment; The methane master derives from landfill, according to China is a populous nation, and municipal refuse increases rapidly, and the municipal refuse amount of clearing every year is above 1.18 hundred million tons at present, for example the rubbish productivity ratio of Shenzhen has surpassed 2.62 kilograms for each person every day, surpasses the Bai Keni city of California, USA; Predicted 2015, China's municipal refuse generation will reach 1.79 hundred million tons.

More serious situation is owing to can produce rubbish landfill gas behind the garbage loading embeading, various volatile organic waste gas VOCS such as its gas main component is that methane accounts for 45～60%, carbon dioxide accounts for 40～53%, hydrogen sulfide, mercaptan account for 1%, ammonia 0.1～0.5%, hydrogen 0.2%, and wherein main component is that methane and carbon dioxide account for more than 90% of total tolerance; Methane is a kind of flammable explosive gas, when the aerial concentration of methane reaches 5.3～20% these scopes, explosion limit just, if run into naked light or vibrations, thunderbolt just might be blasted, increase along with municipal refuse, landfill gas output is also increasing, but because most of landfill yards do not have the gas treatment measure, be in the uncontrollable discharge state, not only serious environment pollution security incident also frequently occurs, in recent years, Shanghai, Beijing, Chongqing, the landfill gas explosion accident all took place in cities such as Yueyang, and calendar year 2001 Zhongshan city tiger hole refuse landfill and Kaiping City's flavor thing reach the accident that gas burst all takes place to cause owing to thunderbolt in soy sauce factory.And most landfill yards are in dispersion, the outlying and little drawback of disposal quantity of refuse, do not possess the condition that rubbish landfill gas is used to generate electricity.

Refuse landfill after sealing 180～500 days begins to produce methane and various organic exhaust gas, and the gas gas production rate of each landfill yard is different.Analyze from Mathematical Modeling: the sealing back was the aerogenesis peak in 5～15 years, later gradual slow, and overall process takes 80～100 years at least, and rubbish gas production per ton is 5.9～18.7m ², be example with the landfill yard of one 50 ten thousand stere: annual gas production 607 ten thousand steres, the waste gas that has 16600 cubic metres every day is in discharging.

According to expert determination: except that methane, also have 116 kinds of various volatile organic waste gas in the gas,, also directly influence human settlement, healthy and live except bring various unpleasant stenches to the resident.

For this reason, National Environmental general bureau has put into effect relevant policies, issue on October 23rd, 2002 " Chinese city garbage loading embeading gas is collected and utilized national action scheme ".

The utility model content

The purpose of this utility model is to address the aforementioned drawbacks and a kind of environmental protection is provided and handles poor, the microkinetic methyl hydride combustion device of minute-pressure of toxic waste gas.

The following mode of the utility model realizes: comprise in the refuse landfill of anaerobic reation pool or sealing the well casing of bleeding is housed; it is characterized in that: the described well casing of bleeding is connected with the biogas arm; the biogas arm connects the gas buffer jar; the gas buffer jar is connected with flare stack; the top is provided with burner and overpressure protection magnetic valve on flare stack; burner and overpressure protection magnetic valve are connected on the electronic impulse ignition apparatus; the gas buffer jar is provided with pressure sensor; pressure sensor is connected with the overpressure protection magnetic valve with electronic impulse ignition apparatus respectively, and the pressure type safety valve is housed on the biogas arm.

On the described flare stack pipe back-fire relief check-valves is arranged.

Described flare stack is fixed with observation ward, and Safety water seal is arranged in observation ward, and Safety water seal is connected in the flare stack lower end by a pipe.

On the described gas buffer jar Pressure gauge is set.

Be connected to flow control valve, pressure-reducing valve and stop valve respectively on described gas buffer jar and the pipe that flare stack is linked to each other.

Described pressure sensor links to each other with the overpressure protection magnetic valve with electronic impulse ignition apparatus, and when accident was flame-out in the burning, pressure sensor can output signal make closed electromagnetic valve, and Ran methane gas can not directly not discharged.

Described biogas arm is provided with the pressure type safety valve.

The beneficial effects of the utility model are: 1, adopt combustion system to handle various toxic harmful exhaust gas, wherein methane reaches to the purification efficiency more than 90% by flame combustion, reduces environmental pollution, avoids influencing human settlement and healthy.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

As shown in Figure 1; comprise in the refuse landfill 15 of anaerobic reation pool or sealing the well casing 16 of bleeding is housed; its described well casing 16 of bleeding is connected with biogas arm 14; biogas arm 14 connects gas buffer jar 13; gas buffer jar 13 is connected with flare stack 3; the top is provided with burner 1 and overpressure protection magnetic valve 10 on flare stack 3; burner 1 and overpressure protection magnetic valve 10 are connected on the electronic impulse ignition apparatus 2; gas buffer jar 13 is provided with pressure sensor 8; pressure sensor 8 is connected with overpressure protection magnetic valve 10 with electronic impulse ignition apparatus 2 respectively, and pressure type safety valve 11 is housed on biogas arm 14.

On described flare stack 3 pipes back-fire relief check-valves 4 is arranged.

Described flare stack 3 is fixed with observation ward 17, and Safety water seal 12 is arranged in observation ward 17, and Safety water seal 12 is connected in flare stack 3 lower ends by a pipe.

On the described gas buffer jar 13 Pressure gauge 9 is set.

Be connected to flow control valve 5, pressure-reducing valve 6 and stop valve 7 respectively on described gas buffer jar 13 and the pipe that flare stack 3 is linked to each other.

The toxic harmful exhaust gas of the refuse landfill 15 of anaerobic reation pool or sealing flows to biogas arm 14 from the well casing 16 of bleeding, again by biogas arm 14 inflow gas surge tanks 13, when the pressure in the gas buffer jar 13 is kept a steady state value P 1, pressure sensor 8 action launching electronic impulse ignition apparatus 2, electronic impulse ignition apparatus 2 produces high-tension ignition, overpressure protection magnetic valve 10 is open-minded simultaneously, and malicious harmful exhaust enters flare stack 3, burns and the malicious harmful exhaust that burns by 1 of burner; When dropping to a steady state value P 2 along with the pressure in the gas buffer jar 13, pressure sensor 8 is in closed condition, makes overpressure protection magnetic valve 10 closures, and the electronics pulsation stops ignition procedure towards igniter, and burner 1 stops.

The water level of Safety water seal 12 will be higher than methane static pressure 200 to 300MM water columns, play and intercept air when entering the effect of system and unexpected tempering, play the effect of back-fire relief, play the effect of draining rainwater and intercepting air when wherein the Safety water seal 12 of flare stack 3 bottoms is flat, prevent flame during with unexpected tempering, enter in anaerobic reation pool or the refuse landfill.

Illustrate: with the annual 0.07m of generation of every kilogram of rubbish ³Landfill gas is calculated, if the whole nation has 3% landfill yard to adopt the processing of burning of methane automatic burning device, can dispose 2.8 billion cubic meter gases, can reduce discharging 120,000 tons in methane every year, its effect is equivalent to 2,500,000 tons of reducing emission of carbon dioxide, therefore extremely is fit to the national conditions that China's garbage loading embeading gas is handled.

Claims

1; minute-pressure is poor; microkinetic methyl hydride combustion device; comprise in the refuse landfill (15) of anaerobic reation pool or sealing the well casing of bleeding (16) is housed; it is characterized in that: the described well casing of bleeding (16) is connected with biogas arm (14); biogas arm (14) connects gas buffer jar (13); gas buffer jar (13) is connected with flare stack (3); go up the top at flare stack (3) and be provided with burner (1) and overpressure protection magnetic valve (10); burner (1) and overpressure protection magnetic valve (10) are connected on the electronic impulse ignition apparatus (2); gas buffer jar (13) is provided with pressure sensor (8); pressure sensor (8) is connected with overpressure protection magnetic valve (10) with electronic impulse ignition apparatus (2) respectively, and pressure type safety valve (11) is housed on biogas arm (14).

2, poor, the microkinetic methyl hydride combustion device of minute-pressure according to claim 1 is characterized in that: on described flare stack (3) pipe back-fire relief check-valves (4) is arranged.

3, poor, the microkinetic methyl hydride combustion device of minute-pressure according to claim 1, it is characterized in that: described flare stack (3) is fixed with observation ward (17), Safety water seal (12) is arranged in observation ward (17), and Safety water seal (12) is connected in flare stack (3) lower end by a pipe.

4, poor, the microkinetic methyl hydride combustion device of minute-pressure according to claim 1 is characterized in that: Pressure gauge (9) is set on the described gas buffer jar (13).

5, poor, the microkinetic methyl hydride combustion device of minute-pressure according to claim 1 is characterized in that: be connected to flow control valve (5), pressure-reducing valve (6) and stop valve (7) respectively on described gas buffer jar (13) and the pipe that flare stack (3) is linked to each other.

6, poor, the microkinetic methyl hydride combustion device of minute-pressure according to claim 1; it is characterized in that: described pressure sensor (8) links to each other with overpressure protection magnetic valve (10) with electronic impulse ignition apparatus (2); when accident is flame-out in the burning; pressure sensor (8) can output signal cut out magnetic valve (10), and Ran methane gas can not directly not discharged.