CN112815351A - Boiler gas inlet system and gas inlet process for semi-coke tail gas and calcium carbide tail gas - Google Patents
Boiler gas inlet system and gas inlet process for semi-coke tail gas and calcium carbide tail gas Download PDFInfo
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- CN112815351A CN112815351A CN202110184067.5A CN202110184067A CN112815351A CN 112815351 A CN112815351 A CN 112815351A CN 202110184067 A CN202110184067 A CN 202110184067A CN 112815351 A CN112815351 A CN 112815351A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
- F23K5/005—Gaseous fuel from a central source to a plurality of burners
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
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Abstract
The invention provides a boiler coal gas inlet system and an inlet process for semi-coke tail gas and calcium carbide tail gas, and belongs to the technical field of boiler combustion systems and processes. The boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas ensures that mixed gas can be cleaned and the conveying resistance of a conveying pipeline is reduced.
Description
Technical Field
The invention belongs to the technical field of boiler combustion systems and processes, and particularly relates to a boiler coal gas inlet system and a boiler coal gas inlet process for semi-coke tail gas and calcium carbide tail gas.
Background
At present, a common boiler is generally only doped with single tail gas such as semi-coke tail gas or calcium carbide tail gas, and then the single semi-coke tail gas or the calcium carbide tail gas is conveyed to a boiler burner through a booster fan for combustion. The plant for producing both calcium carbide and semi-coke can produce two gases, namely calcium carbide tail gas and semi-coke tail gas, the semi-coke tail gas and the calcium carbide tail gas contain a large amount of combustible gas, the heat value is very high, and if the semi-coke tail gas and the calcium carbide tail gas are directly treated, the energy is wasted and the treatment cost is increased. Therefore, the common method is to mix the semi-coke tail gas and the calcium carbide tail gas and then send the mixture into a boiler or other combustion equipment for combustion, but the semi-coke tail gas and the calcium carbide tail gas contain many impurities such as moisture, coal tar, ammonia, water vapor and the like, and the following problems exist during combustion:
1. the semi-coke tail gas and the calcium carbide tail gas are rich in water, coal tar, ammonia and other impurities, so that the semi-coke tail gas and the calcium carbide tail gas are high in viscosity after being mixed, and are easy to bond on the pipe wall of a conveying pipeline, and the resistance of the conveying pipeline is high.
2. An independent ignition device is required to be arranged when the existing gas burner is ignited, an ignition system is complicated, and each burner cannot output power independently and uniformly, so that the load in a boiler is not uniformly distributed, and the minimum use amount of coal gas is limited.
3. The nozzle on the gun head of the existing gas burner is provided with a circle of gas nozzles around the circumference of the nozzle, the aperture of the nozzle is small, and the nozzle is easily blocked by mixed gas of semi-coke tail gas and calcium carbide tail gas, so that the overhaul period of a boiler is shortened, and the workload of maintenance personnel is increased.
Disclosure of Invention
Aiming at the problem that the resistance of a conveying pipeline is large due to the fact that the existing semi-coke tail gas and calcium carbide tail gas contain a large amount of impurities such as moisture, coal tar and ammonia gas, the invention provides a boiler gas inlet system and a gas inlet process for the semi-coke tail gas and the calcium carbide tail gas. The specific technical scheme is as follows:
the boiler gas inlet system for the semi-coke tail gas and the calcium carbide tail gas comprises a calcium carbide tail gas inlet pipe, a semi-coke tail gas inlet pipe, a first mixed gas inlet pipe, a second mixed gas inlet pipe, a liquid seal structure, a burner group inlet pipe and a burner group, wherein the calcium carbide tail gas inlet pipe and the semi-coke tail gas inlet pipe are both communicated with the first mixed gas inlet pipe, the burner group is communicated with the burner group inlet pipe, and the burner group inlet pipe is communicated with the second mixed gas inlet pipe;
the liquid seal structure includes liquid seal case, liquid seal structure intake pipe, liquid seal structure outlet duct, liquid seal structure overflow pipe and liquid seal structure notes liquid pipe all communicate with the inner chamber of liquid seal case, liquid seal structure intake pipe and first gas mixture intake pipe intercommunication, liquid seal structure outlet duct and second gas mixture intake pipe intercommunication, contain liquid seal liquid in the inner chamber of liquid seal case, liquid seal structure intake pipe extends to below the liquid level of liquid seal liquid, liquid seal structure outlet duct sets up more than the liquid level of liquid seal liquid, liquid seal structure overflow pipe sets up between liquid seal structure intake pipe and liquid seal structure outlet duct.
Further limit, the liquid seal structure still includes liquid seal structure discharge pipe, liquid seal structure discharge pipe and the inner chamber intercommunication of liquid seal case, just liquid seal structure discharge pipe sets up the bottom at the liquid seal case.
The boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas further comprises a water-sealed ammonia water tank, and the liquid-sealed structure overflow pipe and the liquid-sealed structure discharge pipe are communicated with the water-sealed ammonia water tank.
Above-mentioned a boiler coal gas air intake system for blue charcoal tail gas and carbide tail gas still includes gas mixture ammonia water discharge pipe, gas mixture ammonia water discharge pipe and second gas mixture intake pipe intercommunication, just gas mixture ammonia water discharge pipe connects the lower tip in second gas mixture intake pipe, gas mixture ammonia water discharge pipe and water seal ammonia water pond intercommunication, gas mixture ammonia water discharge pipe sets up between liquid seal structure and combustor group intake pipe.
Further, a mixed gas regulating valve is arranged on the second mixed gas inlet pipe and is arranged between the burner group inlet pipe and the mixed gas ammonia water discharge pipe.
Above-mentioned a boiler coal gas air intake system for blue charcoal tail gas and carbide tail gas still includes gas mixture diffusion pipe and diffusion pipe, combustor group and gas mixture diffusion pipe intercommunication, gas mixture diffusion pipe and second gas mixture intake pipe all communicate with diffusion pipe.
The boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas further comprises a gas chamber, the calcium carbide tail gas inlet pipe and the semi-coke tail gas inlet pipe are communicated with the gas chamber, and the first mixed gas inlet pipe is communicated with the gas chamber.
The burner is further limited, the burner group comprises a plurality of burners, the burners are communicated with an air inlet pipe of the burner group, the burners are communicated with a mixed gas diffusing pipe, a burner gun head is arranged on each burner, a plurality of side air injection holes and a central air injection hole are arranged on each burner gun head, the central point of the central air injection hole is coincided with the central line axis of the burner gun head, and the side air injection holes are arranged on the outer side of the central air injection hole along the radial direction of the central air injection hole.
A boiler gas inlet process for semi-coke tail gas and calcium carbide tail gas comprises the following steps: the semi-coke tail gas and the calcium carbide tail gas respectively enter a gas chamber, pressure balance, cooling and mixing are carried out in the gas chamber to form mixed gas, the mixed gas is discharged from the gas chamber and then enters a first mixed gas inlet pipe, the mixed gas enters liquid sealing liquid in a liquid sealing box through the first mixed gas inlet pipe, coal tar, moisture and ammonia gas in the mixed gas are cleaned in the liquid sealing liquid, and then the mixed gas is discharged from the liquid sealing box and enters a second mixed gas inlet pipe; the liquid seal liquid in the liquid seal tank is in a dynamic balance state, redundant liquid seal liquid flows into the water seal ammonia water tank along the overflow pipe of the liquid seal structure, and the liquid seal liquid containing coal tar and ammonia gas deposited at the bottom of the liquid seal tank flows into the water seal ammonia water tank along the discharge pipe of the liquid seal structure; ammonia water in the mixed gas in the second mixed gas inlet pipe is deposited at the bottom of the second mixed gas inlet pipe and flows into the water-sealed ammonia water tank along the mixed gas ammonia water discharge pipe; the mixed gas flows into the gas inlet pipe of the burner group through the mixed gas regulating valve and enters the burner group through the gas inlet pipe of the burner group to be combusted.
Further defined, the steps further include: when the burner group breaks down, the mixer in the burner group is discharged into the diffusing pipe along the mixed gas diffusing pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a boiler coal gas inlet system for semi-coke tail gas and calcium carbide tail gas, which comprises a calcium carbide tail gas inlet pipe, a semi-coke tail gas inlet pipe, a first mixed gas inlet pipe, a second mixed gas inlet pipe, a liquid seal structure, a burner group inlet pipe and a burner group, wherein the calcium carbide tail gas inlet pipe and the semi-coke tail gas inlet pipe are both communicated with the first mixed gas inlet pipe, the burner group is communicated with the burner group inlet pipe, the burner group inlet pipe is communicated with the second mixed gas inlet pipe, the liquid seal structure comprises a liquid seal box, a liquid seal structure inlet pipe, a liquid seal structure outlet pipe, a liquid seal structure overflow pipe and a liquid seal structure injection pipe, the liquid seal structure inlet pipe, the liquid seal structure outlet pipe, the liquid seal structure overflow pipe and the liquid seal structure injection pipe are all communicated with the inner cavity of the liquid seal box, the liquid seal structure inlet pipe is communicated with the first mixed gas inlet pipe, the inner cavity of the liquid seal box is filled with liquid seal liquid, the liquid seal structure air inlet pipe extends to the position below the liquid level of the liquid seal liquid, the liquid seal structure air outlet pipe is arranged above the liquid level of the liquid seal liquid, and the liquid seal structure overflow pipe is arranged between the liquid seal structure air inlet pipe and the liquid seal structure air outlet pipe. The gas mixture of blue charcoal tail gas and carbide tail gas washs in the liquid seal liquid of liquid seal incasement, wash away the coal tar in the gas mixture, the aqueous ammonia, impurity such as water and vapor, the coal tar deposit that washs is at liquid seal bottom of the case portion, the gas mixture of sanitization discharges from the liquid seal incasement, liquid seal structure overflow pipe can guarantee that the liquid level of liquid seal liquid is all the time in liquid seal structure intake pipe below and liquid seal structure outlet duct top, and annotate the liquid pipe through the liquid seal structure and constantly feed liquor to the liquid seal incasement, constantly go out liquid through the liquid seal structure overflow pipe and can guarantee that the liquid seal liquid in the liquid seal incasement is in dynamic balance state all the time, ensure to be able to wash the gas mixture totally, reduce pipeline's conveying resistance. The other effect of liquid seal structure can also be when combustor or boiler break down, and the gas mixture that gets into in the liquid seal case from liquid seal structure outlet duct can't flow out from liquid seal structure intake pipe, plays the effect of closed pipeline, and this sealing effect can not have the condition of gas leakage, and the sealing effect of valve is far more effectual.
2. The boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas further comprises a water-sealed ammonia water tank and a liquid-sealed structure discharge pipe, and liquid-sealed liquid containing coal tar and ammonia water deposited at the bottom of the liquid-sealed tank is timely discharged into the water-sealed ammonia water tank through the liquid-sealed structure discharge pipe, so that the mixed gas can be further cleaned.
3. The boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas also comprises a mixed gas ammonia water discharge pipe, and the ammonia water at the bottom in the second mixed gas inlet pipe is timely discharged to the water-sealed ammonia water tank through the mixed gas ammonia water discharge pipe, so that the flow resistance of the mixed gas in the second mixed gas inlet pipe is reduced.
4. The boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas also comprises a mixed gas ammonia water discharge pipe, a mixed gas discharge pipe and a discharge pipe, wherein the burner group is communicated with the mixed gas discharge pipe, the mixed gas discharge pipe and the second mixed gas inlet pipe are both communicated with the discharge pipe, and the mixed gas in the burner group and the second mixed gas inlet pipe is discharged through the discharge pipe when the boiler or the burner breaks down or is overhauled, so that the safety of maintenance personnel is ensured.
5. The boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas also comprises a gas chamber, wherein the gas chamber is communicated with the cooling tower, and can balance the pressure of the semi-coke tail gas inlet pipe and the pressure of the calcium carbide tail gas inlet pipe, and mix and cool the semi-coke tail gas and the calcium carbide tail gas.
6. The burner group comprises a plurality of burners, the gas inlet pipe of the burner group is provided with the burner group flow regulating valve, the flow of each burner can be synchronously and uniformly regulated through the burner group flow regulating valve, the load in the boiler is uniformly distributed, and the minimum use amount of coal gas is not limited.
7. The burner gun head is provided with a plurality of side jet holes and a central jet hole, the central point of the central jet hole is superposed with the central line axis of the burner gun head, the side jet holes are arranged on the outer side of the central jet hole along the radial direction of the central jet hole, the aperture of the central jet hole is larger than that of the side jet holes, larger impurities can be ejected through the central jet hole, and the blocking rate of the side jet holes is effectively reduced.
Drawings
FIG. 1 is a schematic connection diagram of a boiler gas intake system for semi-coke tail gas and calcium carbide tail gas according to the present invention;
FIG. 2 is a schematic view of the connection of a gas burner group and a gas station group;
FIG. 3 is a schematic view of the structure of the gas burner;
FIG. 4 is a side view of FIG. 3;
the device comprises a 1-calcium carbide tail gas inlet pipe, a 2-semi-coke tail gas inlet pipe, a 3-gas chamber, a 41-first mixed gas inlet pipe, a 42-second mixed gas inlet pipe, a 5-liquid seal structure, a 51-liquid seal structure inlet pipe, a 52-liquid seal structure outlet pipe, a 53-liquid seal structure overflow pipe, a 54-liquid seal structure discharge pipe, a 55-liquid seal structure liquid injection pipe, a 6-water seal ammonia water tank, a 7-mixed gas ammonia water discharge pipe, an 8-emission pipe, a 9-mixed gas regulating valve, a 10-burner group inlet pipe, an 11-burner group, a 111-burner, a 112-burner head, a 1121-central gas injection hole, a 1122-side gas injection hole and a 12-mixed gas emission pipe.
Detailed Description
The technical solutions of the present invention will be further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.
The invention relates to a boiler coal gas inlet system for semi-coke tail gas and calcium carbide tail gas, which comprises a calcium carbide tail gas inlet pipe 1, a semi-coke tail gas inlet pipe 2, a first mixed gas inlet pipe 41, a second mixed gas inlet pipe 42, a liquid seal structure 5, a burner group inlet pipe 10 and a burner group 11, wherein the calcium carbide tail gas inlet pipe 1 and the semi-coke tail gas inlet pipe 2 are both communicated with the first mixed gas inlet pipe 41, the burner group 11 is communicated with the burner group inlet pipe 10, and the burner group inlet pipe 10 is communicated with the second mixed gas inlet pipe 42; the liquid seal structure 5 comprises a liquid seal box, a liquid seal structure air inlet pipe 51, a liquid seal structure air outlet pipe 52, a liquid seal structure overflow pipe 53 and a liquid seal structure liquid injection pipe 55, the liquid seal structure air inlet pipe 51, the liquid seal structure air outlet pipe 52, the liquid seal structure overflow pipe 53 and the liquid seal structure liquid injection pipe 55 are both communicated with the inner cavity of the liquid seal box, the liquid seal structure air inlet pipe 51 is communicated with a first mixed gas inlet pipe 41, the liquid seal structure air outlet pipe 52 is communicated with a second mixed gas inlet pipe 42, liquid seal liquid is contained in the inner cavity of the liquid seal box, the liquid seal structure air inlet pipe 51 extends to the position below the liquid level of the liquid seal liquid, the liquid seal structure air outlet pipe 52 is arranged above the liquid level of the liquid seal liquid, and the liquid seal structure overflow pipe 53 is arranged between the liquid seal structure air inlet. The liquid seal structure 5 further comprises a liquid seal structure discharge pipe 55, the liquid seal structure discharge pipe 54 is communicated with the inner cavity of the liquid seal box, and the liquid seal structure discharge pipe 54 is arranged at the bottom of the liquid seal box.
The boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas further comprises a water-sealed ammonia water tank 6, and the liquid-sealed structure overflow pipe 53 and the liquid-sealed structure discharge pipe 54 are communicated with the water-sealed ammonia water tank 6.
Above-mentioned a boiler coal gas air intake system for blue charcoal tail gas and carbide tail gas still includes gas mixture ammonia water discharge pipe 7, gas mixture ammonia water discharge pipe 7 and second gas mixture intake pipe 42 intercommunication, and gas mixture ammonia water discharge pipe 7 is connected at the lower tip of second gas mixture intake pipe 42, gas mixture ammonia water discharge pipe 7 and water seal ammonia water tank 6 intercommunication, gas mixture ammonia water discharge pipe 7 sets up between liquid seal structure 5 and combustor group intake pipe 10. The second mixed gas inlet pipe 42 is provided with a mixed gas regulating valve 9, and the mixed gas regulating valve 9 is arranged between the burner group inlet pipe 10 and the mixed gas ammonia water discharge pipe 7.
Above-mentioned a boiler coal gas air intake system for blue charcoal tail gas and carbide tail gas still includes gas mixture diffusion pipe 12 and diffusion pipe 8, combustor group 11 and gas mixture diffusion pipe 12 intercommunication, gas mixture diffusion pipe 12 and second gas mixture intake pipe 42 all with diffusion pipe 8 intercommunication. Above-mentioned a boiler coal gas air intake system for blue charcoal tail gas and carbide tail gas still includes gas chamber 3, carbide tail gas intake pipe 1 and blue charcoal tail gas intake pipe 2 all communicate with gas chamber 3, first mist intake pipe 41 and 3 intercommunications of gas chamber. The burner group 11 comprises a plurality of burners 111, the burners 111 are all communicated with the burner group air inlet pipe 10, the burners 111 are also all communicated with the mixed gas diffusion pipe 12, a burner tip 112 is arranged on the burner 111, a plurality of side air injection holes 1122 and a central air injection hole 1121 are arranged on the burner tip 112, the central point of the central air injection hole 1121 coincides with the central line axis of the burner tip 112, and the side air injection holes 1122 are arranged outside the central air injection hole 1121 along the radial direction of the central air injection hole 1121.
The invention relates to a boiler gas intake process for semi-coke tail gas and calcium carbide tail gas, which comprises the following steps: the semi-coke tail gas and the calcium carbide tail gas respectively enter a gas chamber 3, pressure balance, cooling and mixing are carried out in the gas chamber 3 to form a mixed gas, the mixed gas is discharged from the gas chamber 3 and then enters a first mixed gas inlet pipe 41, the mixed gas enters liquid sealing liquid in a liquid sealing box through the first mixed gas inlet pipe 41, coal tar, moisture and ammonia gas in the mixed gas are cleaned in the liquid sealing liquid, and then the mixed gas is discharged from the liquid sealing box and enters a second mixed gas inlet pipe 42; the liquid seal liquid in the liquid seal box is in a dynamic balance state, redundant liquid seal liquid flows into the water seal ammonia water pool 6 along the overflow pipe 53 of the liquid seal structure, and the liquid seal liquid containing coal tar and ammonia gas deposited at the bottom of the liquid seal box flows into the water seal ammonia water pool 6 along the discharge pipe 54 of the liquid seal structure; the ammonia water in the mixed gas in the second mixed gas inlet pipe 42 is deposited at the bottom of the second mixed gas inlet pipe 42 and flows into the water-sealed ammonia water tank 6 along the mixed gas ammonia water discharge pipe 7; the mixture flows into the burner group air inlet pipe 10 through the mixture adjusting valve 9, and enters the burner group 11 through the burner group air inlet pipe 10 for combustion.
The steps further include: in the event of a failure of the burner group, the mixer in the burner group 11 is discharged along the mixture-diffusing pipe 12 into the second mixture-intake pipe 42.
Example 1
Referring to fig. 1, the boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas of the invention comprises a calcium carbide tail gas inlet pipe 1, a semi-coke tail gas inlet pipe 2, a gas chamber 3, a first mixed gas inlet pipe 41, a second mixed gas inlet pipe 42, a liquid seal structure 5, a water seal ammonia water tank 6, a mixed gas ammonia water discharge pipe 7, a burner group inlet pipe 10, a burner group 11 and a mixed gas discharge pipe 12; the liquid seal structure 5 comprises a liquid seal box, a liquid seal structure air inlet pipe 51, a liquid seal structure air outlet pipe 52, a liquid seal structure overflow pipe 53, a liquid seal structure liquid injection pipe 55 and a liquid seal structure discharge pipe 54; carbide tail gas intake pipe 1 and blue charcoal tail gas intake pipe 2 all communicate with the air inlet of gas chamber 3, be connected with the cooling tower on the gas chamber 3, the cooling tower is used for cooling the gas mixture in the gas chamber 3, first gas mixture intake pipe 41 communicates with the gas outlet of gas chamber 3, liquid seal structure intake pipe 51 communicates with first gas mixture intake pipe 41, liquid seal structure intake pipe 51 communicates with the inner chamber of liquid seal box, contain the liquid seal liquid that is used for the liquid seal in the liquid seal box, the liquid seal liquid is water, the gas outlet of liquid seal structure intake pipe 51 extends to below the liquid level of liquid seal liquid, liquid seal structure outlet pipe 52 communicates with the inner chamber of liquid seal box, the air inlet of liquid seal structure outlet pipe 52 sets up above the liquid level of liquid seal liquid, liquid seal structure outlet pipe 52 communicates with second gas mixture 42, liquid seal structure overflow pipe 53 communicates with the inner chamber of liquid seal box, the export of liquid seal structure overflow pipe 53 sets up between the gas outlet of liquid seal structure intake pipe 51 and the air inlet of liquid seal structure outlet pipe 52 The overflow pipe 53 of the liquid seal structure is communicated with the water seal ammonia water pool 6, the liquid injection pipe 55 of the liquid seal structure is communicated with the inner cavity of the liquid seal box, liquid seal liquid is injected into the liquid seal box through the liquid injection pipe 55 of the liquid seal structure, the bottom of the liquid seal box is provided with a discharge pipe 54 of the liquid seal structure, and the discharge pipe 54 of the liquid seal structure is communicated with the water seal ammonia water pool 6; a mixed gas ammonia water discharge pipe 7, a mixed gas regulating valve 9 and a mixed gas discharge pipe 12 are sequentially arranged on the second mixed gas inlet pipe 42 from front to back, the second mixed gas inlet pipe 42 is communicated with the water-sealed ammonia water tank 6 through the mixed gas ammonia water discharge pipe 7, and an air inlet of the mixed gas ammonia water discharge pipe 7 is connected to the lower end part of the second mixed gas inlet pipe 42; the mixed gas regulating valve 8 is arranged on the second mixed gas inlet pipe 42, the flow of the second mixed gas inlet pipe 42 is regulated through the mixed gas regulating valve 9, and the second mixed gas inlet pipe 42 is communicated with the burner group inlet pipe 10; referring to fig. 2-4, 8 burners 111 are arranged on the burner group, 8 burners 111 are all communicated with the burner group air inlet pipe 10, 8 burners 111 are all communicated with the second mixed gas air inlet pipe 42 through the mixed gas diffusing pipe 12, the mixed gas diffusing pipe 12 is communicated with the diffusing pipe 8, and the diffusing pipe 8 is also communicated with the second mixed gas air inlet pipe 42; the burner 111 is provided with a burner tip 112, the burner tip 112 is provided with a central air injection hole 1121 and 6 side air injection holes 1122, the diameter of the central air injection hole 1121 is 120 mm, the diameter of the side air injection holes 1122 is 25 mm, the center of the central air injection hole 1121 coincides with the centerline axis of the burner tip 112, the 6 side air injection holes 1122 are arranged outside the central air injection hole 1121 along the radial direction of the central air injection hole 1121, and the 6 side air injection holes 1122 are uniformly distributed along the radial direction of the central air injection hole 1121.
The gas mixture of blue charcoal tail gas and carbide tail gas washs in the liquid seal liquid in the liquid seal case, wash away the coal tar in the gas mixture, the aqueous ammonia, impurity such as water and vapor, the coal tar deposit that washs is at liquid seal bottom of the case portion, the gas mixture of sanitization discharges from the liquid seal incasement, liquid seal structure overflow pipe 53 can guarantee that the liquid level of liquid seal liquid is all the time in liquid seal structure intake pipe 51 below and liquid seal structure outlet duct 52 top, and annotate liquid pipe 55 through the liquid seal structure and constantly feed liquor in to the liquid seal incasement, constantly go out liquid through liquid seal structure overflow pipe 53 and can guarantee that the liquid seal liquid in the liquid seal case is in dynamic balance state all the time, ensure to be able to wash the gas mixture totally, reduce pipeline's transport resistance. The other function of the liquid seal structure 5 can also be that when the burner 111 or the boiler breaks down, the mixed gas entering the liquid seal box from the liquid seal structure gas outlet pipe 52 can not flow out from the liquid seal structure gas inlet pipe 51, so as to play a role of sealing the pipeline, and the sealing function can not have the gas leakage condition, and the sealing effect is better than that of the valve.
Example 2
In this embodiment 1, the boiler gas inlet system for semi-coke tail gas and calcium carbide tail gas realizes a boiler gas inlet process for semi-coke tail gas and calcium carbide tail gas, and includes the steps of respectively feeding semi-coke tail gas and calcium carbide tail gas into a gas chamber 3, and performing pressure balancing, cooling and mixing in the gas chamber 3 to form a mixed gas; the mixed gas is discharged from the gas chamber 3 and then enters a first mixed gas inlet pipe 41, enters the liquid sealing liquid in the liquid sealing box through the first mixed gas inlet pipe 41, and is cleaned of impurities such as coal tar, moisture, ammonia gas and the like in the mixed gas, and then the mixed gas is discharged from the liquid sealing box and enters a second mixed gas inlet pipe 42; the liquid seal liquid in the liquid seal tank is always in a dynamic balance state under the conditions that liquid is continuously fed from the liquid inlet and liquid is continuously discharged from the liquid seal structure overflow pipe 53, redundant liquid seal liquid flows into the water seal ammonia water tank 6 along the liquid seal structure overflow pipe 53, the liquid seal liquid containing coal tar and ammonia gas deposited at the bottom of the liquid seal tank flows into the water seal ammonia water tank 6 along the liquid seal structure discharge pipe 54, ammonia water in the mixed gas in the second mixed gas inlet pipe 42 is deposited at the bottom of the second mixed gas inlet pipe 42 and flows into the water seal ammonia water tank 6 along the mixed gas ammonia water discharge pipe 7, and the liquid seal liquid, the liquid seal liquid containing coal tar and ammonia gas and the ammonia water are recovered through the water seal ammonia water tank 6, so that the liquid seal liquid and the ammonia water are prevented from polluting the environment due to random flow; the mixed gas in the second mixed gas inlet pipe 42 flows into the burner group inlet pipe 10 through the mixed gas regulating valve 9, and the mixed gas in the burner group inlet pipe 10 enters the burner group 11 through the burner group flow regulating valve, namely enters each burner 111 and is combusted in the burner 111; when the combustor 111 or the boiler breaks down or needs to be overhauled, the mixer in the combustor 111 enters the diffusing pipe 8 along the mixed gas diffusing pipe 12, the mixed gas in the second mixed gas inlet pipe 42 enters the diffusing pipe 8, and the mixed gas is evacuated through the diffusing pipe 8, so that the situation that a large amount of mixed gas is accumulated in the combustor 111 to cause physical injury to maintenance personnel is avoided.
The liquid sealing liquid is not limited to water, and any liquid capable of recovering coal tar, ammonia, water vapor and the like can be used; the number of burners 111 is not limited to the above description, and may be increased or decreased according to the actual performance of the boiler; the diameters of the central gas injection holes 1121 and the diameters of the side gas injection holes 1122 in the burner tip 112 may be set according to practical circumstances, and are not limited to the above-defined values.
Claims (10)
1. A boiler coal gas air intake system for blue charcoal tail gas and carbide tail gas, characterized by, including carbide tail gas intake pipe (1), blue charcoal tail gas intake pipe (2), first gas mixture intake pipe (41), second gas mixture intake pipe (42), liquid seal structure (5), burner group intake pipe (10) and burner group (11), carbide tail gas intake pipe (1) and blue charcoal tail gas intake pipe (2) all communicate with first gas mixture intake pipe (41), burner group (11) and burner group intake pipe (10) communicate, burner group intake pipe (10) and second gas mixture intake pipe (42) communicate;
the liquid seal structure (5) comprises a liquid seal box, a liquid seal structure air inlet pipe (51), a liquid seal structure air outlet pipe (52), a liquid seal structure overflow pipe (53) and a liquid seal structure liquid injection pipe (55), the liquid seal structure air inlet pipe (51), the liquid seal structure air outlet pipe (52), the liquid seal structure overflow pipe (53) and the liquid seal structure liquid injection pipe (55) are all communicated with the inner cavity of the liquid seal box, the liquid seal structure air inlet pipe (51) is communicated with the first mixed gas inlet pipe (41), the gas outlet pipe (52) of the liquid seal structure is communicated with the second gas mixture inlet pipe (42), the inner cavity of the liquid seal box is filled with liquid seal liquid, the air inlet pipe (51) of the liquid seal structure extends to the position below the liquid level of the liquid seal liquid, the liquid seal structure air outlet pipe (52) is arranged above the liquid level of the liquid seal liquid, and the liquid seal structure overflow pipe (53) is arranged between the liquid seal structure air inlet pipe (51) and the liquid seal structure air outlet pipe (52).
2. The boiler coal gas inlet system for semi-coke tail gas and calcium carbide tail gas as set forth in claim 1, wherein the liquid seal structure (5) further comprises a liquid seal structure discharge pipe (54), the liquid seal structure discharge pipe (54) is communicated with an inner cavity of the liquid seal box, and the liquid seal structure discharge pipe (54) is arranged at the bottom of the liquid seal box.
3. The boiler coal gas intake system for semi-coke tail gas and calcium carbide tail gas as claimed in claim 2, wherein the boiler coal gas intake system for semi-coke tail gas and calcium carbide tail gas further comprises a water-sealed ammonia water tank (6), and the liquid-sealed structure overflow pipe (53) and the liquid-sealed structure discharge pipe (54) are both communicated with the water-sealed ammonia water tank (6).
4. The boiler coal gas intake system for semi-coke tail gas and calcium carbide tail gas as claimed in claim 3, wherein the boiler coal gas intake system for semi-coke tail gas and calcium carbide tail gas further comprises a mixed gas ammonia water discharge pipe (7), the mixed gas ammonia water discharge pipe (7) is communicated with the second mixed gas intake pipe (42), the mixed gas ammonia water discharge pipe (7) is connected to the lower end portion of the second mixed gas intake pipe (42), the mixed gas ammonia water discharge pipe (7) is communicated with the water-sealed ammonia water tank (6), and the mixed gas ammonia water discharge pipe (7) is arranged between the liquid-sealed structure (5) and the combustor group intake pipe (10).
5. The boiler coal gas inlet system for semi-coke tail gas and calcium carbide tail gas as claimed in claim 4, characterized in that a mixed gas regulating valve (9) is arranged on the second mixed gas inlet pipe (42), and the mixed gas regulating valve (9) is arranged between the burner group inlet pipe (10) and the mixed gas ammonia water discharge pipe (7).
6. The boiler coal gas inlet system for semi-coke tail gas and calcium carbide tail gas as set forth in any one of claims 1 to 5, further comprising a mixed gas diffusion pipe (12) and a diffusion pipe (8), wherein the burner group (11) is communicated with the mixed gas diffusion pipe (12), and the mixed gas diffusion pipe (12) and the second mixed gas inlet pipe (42) are both communicated with the diffusion pipe (8).
7. The boiler coal gas inlet system for semi-coke tail gas and calcium carbide tail gas as claimed in claim 6, further comprising a coal gas cabinet (3), wherein the calcium carbide tail gas inlet pipe (1) and the semi-coke tail gas inlet pipe (2) are both communicated with the coal gas cabinet (3), and the first mixed gas inlet pipe (41) is communicated with the coal gas cabinet (3).
8. The boiler coal gas inlet system for semi-coke tail gas and calcium carbide tail gas as claimed in claim 7, wherein the burner group (11) comprises a plurality of burners (111), the burners (111) are all communicated with the burner group gas inlet pipe (10), the burners (111) are also all communicated with the mixed gas diffusion pipe (12), a burner head (112) is arranged on the burner (111), a plurality of side air injection holes (1122) and a central air injection hole (1121) are arranged on the burner head (112), the central point of the central air injection hole (1121) coincides with the centerline axis of the burner head (112), the side air injection holes (1122) are arranged on the outer side of the central air injection hole (1121) along the radial direction of the central air injection hole (1121), and the aperture of the central air injection hole (1121) is larger than that of the side air injection holes (1122).
9. A boiler gas inlet process for semi-coke tail gas and calcium carbide tail gas is characterized by comprising the following steps: semi-coke tail gas and calcium carbide tail gas respectively enter a gas chamber (3), pressure balance, cooling and mixing are carried out in the gas chamber (3) to form mixed gas, the mixed gas is discharged from the gas chamber (3) and then enters a first mixed gas inlet pipe (41), the mixed gas enters liquid sealing liquid in a liquid sealing box through the first mixed gas inlet pipe (41), coal tar, moisture and ammonia gas in the mixed gas are cleaned in the liquid sealing liquid, and then the mixed gas is discharged from the liquid sealing box and enters a second mixed gas inlet pipe (42); the liquid seal liquid in the liquid seal box is in a dynamic balance state, redundant liquid seal liquid flows into the water seal ammonia water pool (6) along an overflow pipe (53) of the liquid seal structure, and the liquid seal liquid containing coal tar and ammonia gas deposited at the bottom of the liquid seal box flows into the water seal ammonia water pool (6) along a discharge pipe (54) of the liquid seal structure; ammonia water in the mixed gas in the second mixed gas inlet pipe (42) is deposited at the bottom of the second mixed gas inlet pipe (42) and flows into the water-sealed ammonia water tank (6) along the mixed gas ammonia water discharge pipe (7); the mixed gas flows into the gas inlet pipe (10) of the burner group through the mixed gas regulating valve (9) and enters the burner group (11) through the gas inlet pipe (10) of the burner group for combustion.
10. The boiler gas inlet process for semi-coke tail gas and calcium carbide tail gas as claimed in claim 9, wherein the steps further comprise: when the burner group fails, the mixer in the burner group (11) is discharged into the diffusing pipe (8) along the mixed gas diffusing pipe (12).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110184067.5A CN112815351A (en) | 2021-02-10 | 2021-02-10 | Boiler gas inlet system and gas inlet process for semi-coke tail gas and calcium carbide tail gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110184067.5A CN112815351A (en) | 2021-02-10 | 2021-02-10 | Boiler gas inlet system and gas inlet process for semi-coke tail gas and calcium carbide tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117287686A (en) * | 2023-09-26 | 2023-12-26 | 新疆新伊碳能环保科技股份有限公司 | Low-calorific-value semi-coke tail gas high-parameter power generation and heat supply system |
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2021
- 2021-02-10 CN CN202110184067.5A patent/CN112815351A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117287686A (en) * | 2023-09-26 | 2023-12-26 | 新疆新伊碳能环保科技股份有限公司 | Low-calorific-value semi-coke tail gas high-parameter power generation and heat supply system |
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