CN208312362U - A kind of carbon black low-heating-value tail gas boiler exhaust gas safety simultaneously burns device - Google Patents

Abstract

A kind of carbon black low-heating-value tail gas boiler exhaust gas safety simultaneously burns device, is applied to before tail-gas combustion stove, including tail gas main pipe, tail gas branch pipe, tail gas runner and engine manifold after branch pipe, tail gas；One end of engine manifold and tail gas runner is arranged on tail-gas combustion stove, one end of the other end connection tail gas main pipe of tail gas runner, and branch pipe connects after branch pipe, tail gas before the other end and tail gas of tail gas main pipe；The engine manifold is equipped with a U-tube section, and tail gas water seal is equipped in U-tube section, and the top of tail gas water seal is equipped with water compensating valve, and bottom is equipped with discharging valve；Before tail gas on the inlet end connection engine manifold of branch pipe and on the inlet end connection engine manifold of branch pipe behind the front end of tail gas water seal, tail gas and positioned at the rear end of tail gas water seal；Branch pipe is equipped with the first valve before tail gas, and branch pipe is equipped with the second valve after tail gas.The utility model and while burning tail gas will not generate deflagration phenomenon, realize safety in production.

Description

A kind of carbon black low-heating-value tail gas boiler exhaust gas safety simultaneously burns device

Technical field

The utility model relates to boiler exhaust gas and field is burnt, specially a kind of carbon black low-heating-value tail gas boiler exhaust gas safety is simultaneously Burn device.

Background technique

Production of carbon black is always accompanied by the tail gas containing combustible gas, needs to remove the tail gas of the combustible contained to tail Gas carries out burning processing.But conventionally, as the calorific value of carbon black tail gas only 1000 kilocalories/cubic meter or so, in low temperature When it is nonflammable, therefore and boiler must be subjected to baker with coal gas before burning tail gas, the tail gas for reaching 400 DEG C or more to furnace temperature can When combustion condition, it just can be carried out tail gas and burn power generation.

But the prior art and burn tail gas using moment formula, there is very big insecurity factor in design in tail gas burner, It needs to improve this.

Summary of the invention

According to background technique it is found that the prior art and burn tail gas using moment formula there are many deficiencies, concrete analysis As follows: 1. coal gas are insufficient, and rising is very slow when frequent boiler combustion room temperature reaches 300 DEG C or so, prolonged using the coal gas time It is long, increase the input amount of coal gas fuel；2. gas burner is in the innermost layer of tail gas burner, flame is placed in the middle, and tail gas runner is in coal Around gas, flow area is very broad, and only partial tail gas can burn instantaneously contacting with gas burner when burning tail gas, Remaining a large amount of tail gas disperse can cause the detonation of tail gas fuel, there is very big insecurity factor in burner hearth；3. present tail Gas control valve door is butterfly valve, can only play adjustment effect, and poor sealing effect can not play the effect of isolation shutdown completely.

Now will be existing and burn tail gas moment formula and be changed to gradual, a kind of carbon black low-heating-value tail gas boiler exhaust gas safety is provided And burn device.

A kind of carbon black low-heating-value tail gas boiler exhaust gas safety simultaneously burns device, is applied to tail-gas combustion stove, including tail gas main pipe, Branch pipe, tail gas runner and engine manifold after branch pipe, tail gas before tail gas；One end of engine manifold and tail gas runner is arranged at tail gas On combustion furnace, the other end of tail gas runner connects one end of tail gas main pipe, branch pipe, tail gas before the other end and tail gas of tail gas main pipe Branch pipe connects afterwards；The engine manifold is equipped with a U-tube section, is equipped with tail gas water seal in U-tube section, the top of tail gas water seal is set There is water compensating valve, bottom is equipped with discharging valve；The inlet end of branch pipe connects the front end on engine manifold and being located at tail gas water seal before tail gas, After tail gas on the inlet end connection engine manifold of branch pipe and positioned at the rear end of tail gas water seal；Branch pipe is equipped with the first valve before tail gas, Branch pipe is equipped with the second valve after tail gas.

Further, the other end of the tail gas runner is equipped with nozzle, and protrudes into tail-gas combustion stove, and tail gas runner is cut Area is small, and is distributed in around the coal gas burner of tail-gas combustion stove；Guaranteeing can be around coal gas burner when tail gas sprays, and makes Obtaining can burn when furnace temperature is lower on a small quantity in advance, guarantee safety.

Further, the caliber of the engine manifold is 1400 millimeters, branch pipe after branch pipe and tail gas before tail gas main pipe, tail gas Caliber be 250 millimeters, and the material of branch pipe is preferably stainless steel material after branch pipe and tail gas before tail gas main pipe, tail gas.

Further, the connection before the engine manifold and tail gas after branch pipe and tail gas between branch pipe, using welding, and And preservative treatment is carried out in weld；Guarantee the good seal of pipeline and is not easy to corrode.

The utility model has the advantages that compared with prior art, the utility model and while burning tail gas will not generate deflagration phenomenon, realize peace Full production；Furnace temperature grows steadily, and is conducive to the smooth temperature rise and thermal expansion of boiler, safer to the equipment of boiler；And burn tail gas Its operation can be calm and unhurried afterwards, without any confusion.

Detailed description of the invention

Fig. 1: the structural schematic diagram of the present apparatus；

Fig. 2: the distribution schematic diagram of tail gas runner；

Fig. 3: the effect picture of present apparatus precombustion；

Fig. 4: the effect picture of present apparatus steady operation；

In figure: 1- tail gas main pipe；Branch pipe before 2- tail gas；Branch pipe after 3- tail gas；4- tail gas runner；5- engine manifold；6- tail Air water envelope；7- water compensating valve；8- discharging valve；The first valve of 9-；The second valve of 10-；11- tail-gas combustion stove.

Specific embodiment

Now a specific embodiment of 1~4 pair of the utility model is further elaborated with reference to the accompanying drawings.

A kind of carbon black low-heating-value tail gas boiler exhaust gas safety simultaneously burns device, is applied to tail-gas combustion stove 11, including tail gas is dry Branch pipe 3, tail gas runner 4 and engine manifold 5 after branch pipe 2, tail gas before pipe 1, tail gas.

The engine manifold 5 is connected on burning furnace outer wall, and engine manifold 5 is equipped with a U-tube section, is set in U-tube section There is tail gas water seal 6.

The top of tail gas water seal 6 is equipped with water compensating valve 7, and bottom is equipped with discharging valve 8.

The inlet end of branch pipe 2 connects the front end on engine manifold 5 and being located at tail gas water seal 6 before tail gas, branch pipe 3 after tail gas Inlet end connects the rear end on engine manifold 5 and being located at tail gas water seal 6.

Branch pipe 2 connects with the other end of branch pipe 3 after tail gas and converges before tail gas, and is connected to one end of tail gas main pipe 1, tail gas One end of the other end connection tail gas runner 4 of main pipe 1.

Branch pipe 2 is equipped with the first valve 9 before tail gas, and branch pipe 3 is equipped with the second valve 10 after tail gas.

The other end of tail gas runner 4 protrudes into tail-gas combustion stove, and the nozzle of tail gas is spurted in connection, the tail gas runner 3 Sectional area is small, and is distributed in around coal gas burner, as shown in Fig. 2.

In the present embodiment, the caliber of engine manifold 1 is 1400 millimeters, before tail gas main pipe 1, tail gas after branch pipe 2 and tail gas The caliber of branch pipe 3 is 250 millimeters, and the material of branch pipe 3 is preferably stainless steel after branch pipe 2 and tail gas before tail gas main pipe 1, tail gas Material.

Connection before engine manifold 5 and tail gas after branch pipe 2 and tail gas between branch pipe 3, can be used and can guarantee leakproofness Welding, and preservative treatment is carried out in weld.

Working principle:

Firstly, the sealing water level of confirmation tail gas water seal 6 is in ordinary water level before work, the second valve 10, which is in, closes shape State；

Then the first valve 9 is opened, branch pipe 2 can take gas from engine manifold 5 before tail gas at this time, and tail gas is imported to the tail of small diameter tube It sprays, is sprayed on around coal gas burner in flow channel 4 and from nozzle；Boiler combustion room temperature reaches 300 DEG C or so and furnace temperature at this time Rise slowly, although the burning point of tail gas is not achieved in the furnace temperature for being not up to 400 DEG C at 300 DEG C or so, that is the instrument because of furnace temperature Measuring point is on the furnace wall far from gas burner, and when furnace temperature shows 300 DEG C or so, actually the temperature of gas burner is at 1000 DEG C Left and right；Since tail gas is around nozzle coal gas burner, multifuel combustion can be smooth by fire box temperature around gas burner for a small amount of tail gas 600 DEG C or more are risen to, at this moment again and a large amount of tail gas is burnt and would not generate deflagration phenomenon, so around gas burner and burning tail gas It is perfectly safe, as shown in Fig. 3；

When work rises to furnace temperature, the discharging valve 8 of 6 lower part of tail gas water seal is opened, releases the water seal of tail gas water seal 6, is opened Second valve 10 simultaneously closes the first valve 9, and branch pipe 3 can take gas from engine manifold 5 after tail gas at this time, and tail-gas combustion stove enters steady operation State, as shown in Fig. 4.

In the state of emergency, discharging valve 8 is closed, opens water compensating valve 7, water is injected to tail gas water seal 6, due to branch pipe after tail gas 3 be to take gas from engine manifold 5, and branch pipe 2 since the first valve 9 is in close state can not also take gas before tail gas at this time, so burning The supplement that furnace cannot get combustion tail gas will stop working, into safe condition.

Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this The various changes and improvements that the technical solution of utility model is made should all fall into the protection that the utility model claims book determines In range.

Claims (5)

1. a kind of carbon black low-heating-value tail gas boiler exhaust gas safety simultaneously burns device, it is applied to tail-gas combustion stove, it is characterised in that including Branch pipe, tail gas runner and engine manifold after branch pipe, tail gas before tail gas main pipe, tail gas；One end of tail gas runner is arranged at tail gas On combustion furnace, the other end of tail gas runner connects one end of tail gas main pipe, branch pipe, tail gas before the other end and tail gas of tail gas main pipe Branch pipe connects afterwards；The engine manifold is equipped with a U-tube section, is equipped with tail gas water seal in U-tube section, the top of tail gas water seal is set There is water compensating valve, bottom is equipped with discharging valve；The inlet end of branch pipe connects the front end on engine manifold and being located at tail gas water seal before tail gas, After tail gas on the inlet end connection engine manifold of branch pipe and positioned at the rear end of tail gas water seal；Branch pipe is equipped with the first valve before tail gas, Branch pipe is equipped with the second valve after tail gas.

2. carbon black low-heating-value tail gas boiler exhaust gas safety according to claim 1 simultaneously burns device, it is characterised in that: the tail The other end of flow channel is equipped with nozzle, and protrudes into tail-gas combustion stove.

3. carbon black low-heating-value tail gas boiler exhaust gas safety according to claim 2 simultaneously burns device, it is characterised in that: the tail The sectional area of flow channel is small, and is evenly distributed on around the coal gas burner of tail-gas combustion stove.

4. carbon black low-heating-value tail gas boiler exhaust gas safety according to claim 1 simultaneously burns device, it is characterised in that: the tail The caliber of gas general pipeline is 1400 millimeters, and the caliber of branch pipe is 250 millimeters after branch pipe and tail gas before tail gas main pipe, tail gas, and tail The material of branch pipe is preferably stainless steel material after branch pipe and tail gas before gas main pipe, tail gas.

5. carbon black low-heating-value tail gas boiler exhaust gas safety according to claim 1 simultaneously burns device, it is characterised in that: the tail Connection before gas general pipeline and tail gas after branch pipe, tail gas between branch pipe carries out anti-corrosion using welding connecting mode, and in weld Processing.