Visual multi-channel heating operation combined nozzle with ignition function

Abstract

A visible multi-channel heating operation combined nozzle with an ignition function relates to the technical field of petrochemical engineering, and comprises a heating auxiliary nozzle and a multi-channel operation nozzle arranged along the peripheral direction of the outer side of the heating auxiliary nozzle; an air inlet, a fuel gas inlet, a visible flame detector and an igniter are arranged on the heating auxiliary nozzle; the multi-channel operation nozzle is provided with a first steam inlet, a liquid hydrocarbon inlet, an oxygen inlet, a second steam inlet and a cooling water jacket, the cooling water jacket is provided with a cooling water inlet and a cooling water outlet, steam is introduced into the heating auxiliary nozzle for protection, the gasification furnace is not damaged by ablation during operation, and the risk of lip ablation is reduced; an oxygen inlet medium provides cutting atomization power for heavy oil and liquid hydrocarbon; a medium at a steam inlet II is sprayed out at a rotary cutting angle of 5-15 degrees to protect the head of the burner; medium in the jacket forms a flow field with temperature at the head of the nozzle in a rotational flow mode, radiation heat is removed, and the nozzle is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of petroleum chemical industry, concretely relates to a visual multi-channel temperature -raising operation combined nozzle with ignition function. BACKGROUND

[0002] The existing Shell, East China University of Technology gasifier has the problems of serious burning erosion of burner lip, deformation of channel, damage of refractory brick, and damage of cooling water jacket during operation. The cooling water jacket of the burner of East China University of Technology was damaged after 9.4 days of operation. The operating dome of the Shell and East China University of Technology gasifier was overheated by more than 400℃, the burner lip was severely eroded and deformed, the internal channel was retracted to form tempering, which accelerated the damage of the burner, reduced the carbon conversion rate, and caused flash explosion at the head, and the refractory brick was damaged. The burner of East China University of Technology frequently appeared to be extinguished during the temperature -raising stage of the gasifier, which could not be judged. The integrated burner could not meet the one-time completion of the temperature -raising operation. The center oxygen channel was removed, the auxiliary burner was replaced, the temperature was raised to the ignition point of fuel gas, and the center oxygen channel was replaced with a dummy part for operation and feeding. The auxiliary burner of Shell also needs to replace the auxiliary burner with a dummy part, which increases the labor and time cost. SUMMARY

[0003] In view of the above problems of the prior art, the utility model aims to provide a visual multi-channel temperature -raising operation combined nozzle with ignition function, which can solve the above problems.

[0004] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0005] A visual multi-channel temperature -raising operation combined nozzle with ignition function, comprising a temperature -raising auxiliary nozzle and a multi-channel operation nozzle arranged along the circumferential direction of the temperature -raising auxiliary nozzle; the temperature -raising auxiliary nozzle is provided with an air inlet, a fuel gas inlet, a visual fire detector and an igniter; the multi-channel operation nozzle is provided with a steam inlet one, a liquid hydrocarbon inlet, an oxygen inlet, a steam inlet two and a cooling water jacket, and the cooling water jacket is provided with a cooling water inlet and a cooling water outlet.

[0006] Preferably, the multi-channel operation nozzle is provided with an equal distributor.

[0007] Preferably, a shut-off valve is arranged between the visual fire detector and the temperature -raising auxiliary nozzle.

[0008] Preferably, the medium flow rate through the steam inlet into the passage is 20-100 m / s; the medium flow rate through the liquid hydrocarbon inlet into the passage is 2-30 m / s; the medium flow rate through the oxygen inlet into the passage is 30-150 m / s; the medium flow rate through the steam inlet two into the passage is 10-100 m / s, and the medium of the steam inlet two is sprayed at a 5-15° rotary cutting angle; and the cooling water in the cooling water jacket forms a temperature field in a rotary flow manner.

[0009] Compared with the prior art, the utility model has the advantages that: the steam is passed into the temperature-raising auxiliary nozzle to protect the nozzle from being ablated and damaged during the operation of the gasification furnace, the steam inlet one medium prolongs the flame length and atomizes the heavy oil and liquid hydrocarbon, forms a stable flame at a certain distance from the nozzle head, reduces the risk of lip ablation, and improves the service life; the oxygen inlet medium provides the shearing atomization power of the heavy oil and liquid hydrocarbon, and improves the conversion rate; the steam inlet two medium is sprayed at a 5-15° rotary cutting angle to protect the nozzle head; the cooling water inlet and the cooling water outlet form a cooling water jacket, the medium in the jacket forms a temperature field in a rotary flow manner at the nozzle head, removes the radiant heat, protects the nozzle, and prolongs the service period. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] MARKS OF THE DRAWINGS:

[0013] 1-air inlet, 2-fuel gas inlet, 3-steam inlet one, 4-liquid hydrocarbon inlet, 5-oxygen inlet, 6-steam inlet two, 7-cooling water inlet, 8-cooling water outlet, 9-visible fire detector, 10-igniter. DETAILED DESCRIPTION

[0014] The content created by the utility model will be described in detail in the form of examples in combination with the drawings of the specification. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. EMBODIMENT

[0015] As Figure 1The utility model discloses a visual multi -pass warming operation combination nozzle with ignition function, including warming auxiliary nozzle and the multi -pass operation nozzle of setting along the outside circumference direction of warming auxiliary nozzle.

[0016] The warming auxiliary nozzle is provided with an air inlet 1, a fuel gas inlet 2, a visual flame detector 9 and an igniter 10.

[0017] The multi -pass operation nozzle is provided with a steam inlet one 3, a liquid hydrocarbon inlet 4, an oxygen inlet 5, a steam inlet two 6 and a cooling water jacket.

[0018] Further, in the embodiment, steam enters the nozzle through the steam inlet one 3, is distributed into the internal multi -pass by the equal distributor, the steam pass isolates oxygen and heavy oil, liquid hydrocarbon, alleviates the combustion of nozzle head, increases the length of combustion flame, reduces the nozzle ablation, and the medium flow rate in the pass is 50 m / s; heavy oil, liquid hydrocarbon enters the nozzle pass through the liquid hydrocarbon inlet 4, is distributed into the internal multi -pass by the equal distributor, after heavy oil, liquid hydrocarbon enter this pass, is sprayed from the nozzle head and is atomized by steam and oxygen, improves the length of combustion flame, reduces the nozzle ablation, prevents the overtemperature of gasifier dome, and the medium flow rate in the pass is 20 m / s; oxygen enters the nozzle through the oxygen inlet 5, is distributed into the internal multi -pass by the equal distributor, this pass provides power for the atomization and cutting of heavy oil, liquid hydrocarbon, and the medium flow rate in the pass is 120 m / s; steam enters the nozzle through the steam inlet two 6, is distributed into the internal multi -pass by the equal distributor, and the medium in the steam inlet two 6 is sprayed at a 15 ° rotary cutting angle to protect the burner head; the cooling water in the cooling water jacket forms a temperature flow field in the form of rotary flow, removes radiant heat, protects the nozzle and prolongs the service life.

[0019] Heavy oil, liquid hydrocarbon contains heavy metal and sulfur, which can cause wear and corrosion of the nozzle, the nozzle head is provided with an arc transition angle and a cooling water jacket, and the cooling water enters in the form of rotary flow to ensure the cooling water flow rate and heat exchange effect, that is, to avoid the wear and corrosion of heavy oil and liquid hydrocarbon to the nozzle pass wall and to ensure the safety of the nozzle, and at the same time, the angle of the arc transition angle is adjusted to adjust the medium flow rate and flow rate of each pass to cut and atomize heavy oil and liquid hydrocarbon, and improve the conversion rate of heavy oil and liquid hydrocarbon in the gasifier.

[0020] Working principle: the temperature-assisted nozzle is ignited by the igniter 10 after mixing fuel gas and air, and heats the gasifier by burning outside the head of the temperature-assisted nozzle. The visible flame detector 9 is used to observe the flame burning condition downward. When the temperature-assisted nozzle reaches the maximum allowable load, the multi-channel operation nozzle is started, and the temperature-assisted nozzle is used to ignite the multi-channel operation nozzle. At this time, the steam inlet one 3 and the steam inlet two 6 of the multi-channel operation nozzle are connected to air medium as the cooling medium of the multi-channel operation nozzle, the oxygen inlet 5 is connected to air, and the liquid hydrocarbon inlet 4 is connected to fuel gas as the heat source for heating and warming up before starting the gasifier.

[0021] The visible flame detector 9 behind the temperature-assisted nozzle has an interlocking closing function. When the gasifier is running, the temperature-assisted nozzle channel, the steam inlet one 3 and the steam inlet two 6 are switched to steam as the cooling protection and cutting power source; the oxygen inlet 5 is switched from air to oxygen; and the liquid hydrocarbon inlet 4 is switched from fuel gas to heavy oil and liquid hydrocarbon.

[0022] The temperature-assisted nozzle is connected to steam protection, which is not ablated and damaged during the operation of the gasifier. The steam inlet one 3 medium prolongs the flame length and atomizes heavy oil and liquid hydrocarbon, forms a stable flame at a certain distance from the nozzle head, reduces the risk of lip ablation, and improves the service life. The oxygen inlet 5 medium provides the cutting and atomization power of heavy oil and liquid hydrocarbon, and improves the conversion rate. The steam inlet two 6 medium sprays at an angle of 5-15° to protect the burner head. The cooling water inlet 7 and the cooling water outlet 8 form a cooling water jacket, and the medium in the cooling water jacket forms a temperature field with a rotational flow at the nozzle head, removes the radiant heat, protects the nozzle, and prolongs the service life.

[0023] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and application concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A visible, multi-channel heating and operation combined nozzle with ignition function, characterized in that: It includes a heating auxiliary nozzle and a multi-channel operating nozzle arranged along the outer circumference of the heating auxiliary nozzle; the heating auxiliary nozzle is provided with an air inlet (1), a fuel gas inlet (2), a visible flame detector (9) and an igniter (10); the multi-channel operating nozzle is provided with a steam inlet one (3), a liquid hydrocarbon inlet (4), an oxygen inlet (5), a steam inlet two (6) and a cooling water jacket, and the cooling water jacket is provided with a cooling water inlet (7) and a cooling water outlet (8).

2. The visible multi-channel heating and operation combined nozzle with ignition function as described in claim 1, characterized in that: The multi-channel operating nozzle is equipped with an equal volume distributor.

3. The visible multi-channel heating and operation combined nozzle with ignition function as described in claim 1, characterized in that: A shut-off valve is provided between the visible flame detector (9) and the heating auxiliary nozzle.

4. The visible multi-channel heating and operation combined nozzle with ignition function as described in claim 1, characterized in that: The medium entering the channel through steam inlet one (3) has a flow rate of 20 m / s-100 m / s; the medium entering the channel through liquid hydrocarbon inlet (4) has a flow rate of 2 m / s-30 m / s; the medium entering the channel through oxygen inlet (5) has a flow rate of 30 m / s-150 m / s; the medium entering the channel through steam inlet two (6) has a flow rate of 10 m / s-100 m / s, and the medium from steam inlet two (6) is ejected at a 5-15° swirl angle; the cooling water in the cooling water jacket forms a warm flow field in a swirling manner.

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