CN101413669A - Waste gas heating power incineration process flow - Google Patents

Abstract

The invention discloses a waste gas thermal force incineration process flow which comprises the following steps: (1) autoignition is carried out in a combustion chamber until the temperature reaches 760-820DEG C; (2) drying line waste gas of 80 DEG C is sent to a preheater to be preheated to 360DEG C from a high temperature draught fan and then is transmitted to the combustion chamber of 760-820DEG C to stay at 0.3-0.5m/s; (3) the gas which is burnt and purified enters a heat interchanger through a preheating chamber, and the tap water of the heat interchanger is warmed up to produce the temperature of water for life; (4) after heat exchange, the gas is exhausted into the atmosphere through the draught fan. Compared with the waste gas thermal force combustion process of the prior art, the waste gas thermal force incineration process flow can lead organic waste gas to be fully burnt into CO2, H2O, N and the like in the combustion chamber of 760-820DEG C, thus improving the purifying quality of the waste gas; the gas which is burnt and purified is exhausted into the atmosphere after being transferred heat by using the heat interchanger, and the excess heat of the gas which is burnt and purified is fully utilized, thus saving the energy and obtaining good economic effect.

Description

Waste gas heating power incineration process flow

Technical field

The present invention relates to a kind of burned waste gas technology.

Background technology

The waste gas heating power combustion process can be divided into for three steps: the auxiliary fuel that 1. burns provides pre-thermal energy; 2. high-temperature fuel gas mixes with waste gas to reach reaction temperature; 3. waste gas fully burning under reaction temperature.Under the sufficient situation of oxygen supply, it is the necessary condition of flame combustion that reaction temperature, residence time and turbulent flow are mixed.Be enough to burn most of foul smell and small size particle at 650 ℃ of resident 0.3s, large-size particles is then needed higher temperature and long residence time, for making gas abundant turbulent flow in the combustion chamber, the flow velocity of waste gas should be at 4～8m/s.The waste gas heating power incineration process flow of available technology adopting can not fully burn by waste gas, the waste gas purification poor effect.

Summary of the invention

At the defective that exists in the prior art, the invention provides a kind of waste gas heating power incineration process flow, this incineration process flow not only makes waste gas fully burn, improved the depuration quality of waste gas, and make full use of the waste heat that burning purifies back gas, energy-conserving and environment-protective reduce production costs, and obtain good economic effect.

For achieving the above object, technical solution of the present invention is:

The equipment that this waste gas heating power incineration technology is used comprises high temperature draught fan, preheater, combustion chamber, preheating chamber, heat exchanger and the air-introduced machine that is connected in regular turn, and its waste gas heating power incineration process flow may further comprise the steps: 1. auto-ignition combustion to 760 ℃～820 ℃ in the combustion chamber; 2. 80 ℃ of drying line waste gas are sent into preheater by high temperature draught fan and be preheating to 360 ℃ of combustion chambers of sending into 760 ℃～820 ℃ again, and resident 0.3～0.5m/s; 3. the purified gas that burns enters heat exchanger through preheating chamber, and with the running water of heat exchanger heat production, domestic water temperature; 4. the gas after the heat exchange enters atmosphere through air-introduced machine.

The usefulness of technique scheme is:

Compare with prior art waste gas heating power combustion process, waste gas heating power incineration process flow of the present invention can become CO with organic exhaust gas completing combustion in 760 ℃～820 ℃ combustion chamber₂, H₂O, N etc. have improved the depuration quality of waste gas; The purified gas that will burn enters atmosphere after via the heat exchanger heat exchange again, making full use of the waste heat that burning purifies back gas, has saved the energy, obtains good economic effect.

Description of drawings

The equipment that Fig. 1 uses for waste gas heating power incineration technology of the present invention;

Fig. 2 is waste gas heating power incineration process flow figure of the present invention.

The specific embodiment

Specific embodiment explanation the present invention in conjunction with the accompanying drawings now.

The equipment that waste gas heating power incineration process flow of the present invention as shown in Figure 1 uses, it is connected with high temperature draught fan 1, preheater 2, precombustion chamber, combustion chamber 4, preheating chamber, blast pipe 6 in regular turn.

Described precombustion chamber mainly is made up of a cylinder that offers through hole, is provided with pre-burners in it; Preheater 2 connects high temperature draught fan 1 and precombustion chamber, and the vertical center axis of this preheater 2 is positioned at 1/2nd places of pre-burners flame maximum horizontal jet length; Combustion chamber 4 mainly is made up of a cylinder that offers through hole, is provided with burner in it, and a ring flange connects combustion chamber 4 and precombustion chamber; Preheating chamber is mainly laid by seamless steel pipe and is formed, and its externally connected exhaust pipe 6 is provided with baffle plate between this preheating chamber and the combustion chamber 4; Described blast pipe 6 is connected with heat exchanger 7, and this heat exchanger 7 also is connected with an air-introducedmachine 8.

As shown in Figure 2: waste gas heating power incineration process flow of the present invention may further comprise the steps:

Embodiment 1:

1. auto-ignition combustion to 760 ℃ in the combustion chamber;

2. under the high temperature draught fan effect, 80 ℃ of drying line waste gas are sent into preheater by high temperature draught fan be preheating to 360 ℃ of combustion chambers of sending into 760 ℃ again, under residence time 0.3m/s situation, organic exhaust gas completing combustion is become CO₂, H₂O, N etc. reach splendid waste gas purification effect;

3. the purified gas that burns enters heat exchanger through preheating chamber, the running water of heat exchanger is warmed to temperature required, for produce, the usefulness of life, the waste heat of gas has been saved the energy after making full use of burning and purifying.

4. the gas after the heat exchange just enters atmosphere through air-introduced machine.

Embodiment 2:

1. auto-ignition combustion to 800 ℃ in the combustion chamber;

2. under the high temperature draught fan effect, 80 ℃ of drying line waste gas are sent into preheater by high temperature draught fan be preheating to 360 ℃ of combustion chambers of sending into 800 ℃ again, under residence time 0.4m/s situation, organic exhaust gas completing combustion is become CO₂, H₂O, N etc. reach splendid waste gas purification effect;

3. the purified gas that burns enters heat exchanger through preheating chamber, the running water of heat exchanger is warmed to temperature required, for produce, the usefulness of life, the waste heat of gas has been saved the energy after making full use of burning and purifying;

4. the gas after the heat exchange just enters atmosphere through air-introduced machine.

Embodiment 3:

1. auto-ignition combustion to 820 ℃ in the combustion chamber;

2. under the high temperature draught fan effect, 80 ℃ of drying line waste gas are sent into preheater by high temperature draught fan be preheating to 360 ℃ of combustion chambers of sending into 820 ℃ again, under residence time 0.5m/s situation, organic exhaust gas completing combustion is become CO₂, H₂O, N etc. reach splendid waste gas purification effect;

3. the purified gas that burns enters heat exchanger through preheating chamber, the running water of heat exchanger is warmed to temperature required, for produce, the usefulness of life, the waste heat of gas has been saved the energy after making full use of burning and purifying;

4. the gas after the heat exchange just enters atmosphere through air-introduced machine.

Waste gas heating power incineration process flow of the present invention is compared with existing technology, and its distinct advantages is arranged: the one, The requirement that suitable environmental protection is more and more higher, especially Wind Volume, high-temperature, the waste gas of high-concentration and low-concentration Administration project is more and more, and the domestic and international market needs it, must bring huge economic benefit. The 2nd, Stand the keen competition of market economy, make enterprise place the invincible position. The 3rd, fill up domestic and international strong wind The blank of the waste gas heating power incinerator of amount, high-temperature, high and low concentration is beaten for improving product line Descend its basis, prior this product has the environmental protection of international advanced science and technology level and produces Product, waste gas purification quality height is the important weapon of protection high-quality atmosphere, waste heat can utilize, and saves The energy reduces production costs, and obtains significant economic effect, social effect.

Claims (1)

1, waste gas heating power incineration process flow, the equipment that this waste gas heating power incineration technology is used comprises high temperature draught fan, preheater, combustion chamber, preheating chamber, heat exchanger and the air-introduced machine that is connected in regular turn, it is characterized in that: may further comprise the steps:

1. auto-ignition combustion to 760 ℃～820 ℃ in the combustion chamber;

2. 80 ℃ of drying line waste gas are sent into preheater by high temperature draught fan and be preheating to 360 ℃ of combustion chambers of sending into 760 ℃～820 ℃ again, and resident 0.3～0.5m/s;

3. the purified gas that burns enters heat exchanger through preheating chamber, and the running water of heat exchanger is heated to production, domestic water temperature;

4. the gas after the heat exchange enters atmosphere through air-introduced machine.

Images