CN102155785A

CN102155785A - Novel direct-exchanging reinforced-discharging type water jacket furnace

Info

Publication number: CN102155785A
Application number: CN2010101933597A
Authority: CN
Inventors: 雒定明; 刘文广; 陈玉梅; 刘俊; 谢兵; 焦建国
Original assignee: China National Petroleum Corp Engineering Design Co Ltd
Current assignee: China National Petroleum Corp Engineering Design Co Ltd
Priority date: 2010-06-07
Filing date: 2010-06-07
Publication date: 2011-08-17

Abstract

The invention discloses a novel direct-exchanging reinforced-discharging type water jacket furnace, which comprises a water jacket furnace shell, wherein an immersion burner and a chimney are arranged on the upper part of the water jacket furnace shell; a smoke collecting box is arranged at the bottom of the immersion burner; the immersion burner and the smoke collecting box are immersed into water; a heat exchange coiled pipe is arranged at the bottom of the water jacket furnace shell; the lower end and the upper end of the heat exchange coiled pipe are connected with a material inlet and a material outlet respectively; and a heat exchange pipe bundle is manufactured into the coiled pipe by directly bending a seamless steel pipe. The invention has the advantages that: the furnace has a good heat exchange effect, high heat efficiency and high environmental performance, greatly reduces the fuel gas consumption of the water jacket furnace, has the smoke discharging temperature of lower than 100 DEG C and makes discharging convenient; structures such as a flame pipe, a smoke discharging flue and the like are eliminated, so that the volume of an equipment shell is reduced; a metal heat transfer surface does not exist, so that accidents caused by damages to a heat transfer flame pipe are prevented; and the heat exchange pipe bundle is manufactured into the coiled pipe by directly bending the seamless steel pipe, so that manufacturing difficulty and manufacturing cost are reduced, fluid resistance is reduced, and heat efficiency is improved.

Description

Novelly directly change forced-ventilated water jacket furnace

Technical field

The present invention relates to a kind of burning heater, especially relate to the water jacket furnace that a kind of water is cooked heat transfer medium heating natural gas.

Background technology

From the gas pressure height of underground mining, carry for ease of ground, need the throttling step-down.But throttling step-down process must cause the gas medium temperature and descend, and when temperature drops to water dew point when following, the impurity such as some hydrates in the natural gas will freeze, and it is stifled to form ice in conveyance conduit, causes pipeline breaking.Take place for anti-stagnant ice is stifled, so in advance will be with water jacket furnace to the natural gas heat temperature raising.Water jacket furnace realizes that to the heat temperature raising mode that adds hot water commonly used of natural gas the existing mode that adds hot water is the fire-tube type heating.The structure of fire-tube type water jacket furnace as shown in Figure 1, comprise housing 1, water 2, heat exchange coil 3, material outlet 4, high pressure elbow 5, material inlet 6, smokejack 7, fire tube 8, long flame 9, air intlet 10, burner 11, fuel gas import 12, chimney 13, oxygen analyzer 14.The burner 1 that is installed in water jacket furnace housing 1 below has air intlet 10 and fuel gas import 12, and the heat that long flame 9 produces is passed to water 2 by fire tube 8; High-temperature flue gas is discharged from the chimney 13 that has oxygen analyzer 14 after smokejack 7 and water 2 further heat exchange, and exhaust gas temperature is not less than 250 ° of C; The natural gas cold fluid flows into from material inlet 6, flows through the high pressure heat-exchanging tube bundle, be heated after water 2 carry out heat exchange after, flow out from material outlet 4, enter the process unit of appointment.

The fire-tube type water jacket furnace mainly utilizes the mode and the water 2 of partition heating to carry out heat exchange by fire tube 8, and secondly also by smokejack 7 and water heat exchange, the heat exchange effect is limited, causes exhaust gas temperature up to 250 ℃, and heat loss is big; And fire tube 8 is subjected to hyperthermia radiation for a long time, and is fragile; Simultaneously, because the water jacket furnace housing bottom is laid with chimney, fire tube and smokejack, remaining space is narrow and small, and the high pressure heat-exchanging tube bundle is can only be by bending radius little and make the big high pressure elbow 5 of assembling difficulty and be connected with heat exchange coil 3; Moreover, fire tube 8 is arranged in the water jacket furnace housing, structures such as flue 7 cause heat-exchanging tube bundle comb difficulty, and the apparatus casing volume enlarges markedly, the cost height.

Summary of the invention

In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of novel forced-ventilated water jacket furnace that directly changes, with high-temperature flue gas and the direct bubbling heat exchange of water, exhaust gas temperature is controlled at below 100 ℃, has cancelled the heat transfer fire tube, good effect of heat exchange, thermal efficiency height.

The technical solution adopted for the present invention to solve the technical problems is: a kind of novel forced-ventilated water jacket furnace that directly changes, comprise the water jacket furnace housing, on water jacket furnace housing top submerged burner and chimney are set, described submerged burner bottom is provided with the collection cigarette case, and submerged burner and collection cigarette case all immerse in the water; Arrange heat exchange coil at the water jacket furnace housing bottom, the lower end of heat exchange coil is connected material inlet and material outlet respectively with the upper end; Described heat exchange coil directly adopts seamless steel pipe to bend by heat-exchanging tube bundle and forms.

On described inner wall of stack, oxygen analyzer is set.

Compared with prior art, good effect of the present invention is: adopt the collection cigarette case to be immersed in the water, make high-temperature flue gas and water directly carry out the bubbling heat exchange, good effect of heat exchange, thermal efficiency height reduces the fuel gas consumption of water jacket furnace greatly, exhaust gas temperature is lower than 100 ℃, is convenient to discharging, and the feature of environmental protection is good; Cancel structures such as fire tube and smokejack, reduced the apparatus casing volume; Simultaneously, do not have the metal heat transfer face, avoided the heat transfer fire tube to be destroyed and accidents caused owing to cancelled conducting heat and use fire tube; And because the water jacket furnace housing bottom has been cancelled the laying of chimney, fire tube and smokejack, reserve enough spaces and arranged heat exchange coil, making heat-exchanging tube bundle directly to adopt seamless steel pipe to bend forms, this making has not only reduced manufacture difficulty and manufacturing cost, and can also reduce fluid resistance, improve the thermal efficiency.

Description of drawings

The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:

Fig. 1 is the structural representation of existing fire-tube type water jacket furnace;

Fig. 2 is a structural representation of the present invention.

The specific embodiment

A kind of novel forced-ventilated water jacket furnace that directly changes as shown in Figure 2, comprises submerged burner 21, air intlet 22, fuel gas import 23, chimney 24, oxygen analysis 25, water 26, collection cigarette case 27, material outlet 28, material inlet 29, heat exchange coil 30, water jacket furnace housing 31 and agitator 32.

Water 26 is housed in water jacket furnace housing 31, and submerged burner 21 is installed in water jacket furnace housing 31 tops, has air intlet 22 and fuel gas import 23, and submerged burner 21 bottoms are provided with collection cigarette case 27, and submerged burner 21 and collection cigarette case 27 all immerse in the water; Be provided with chimney 24 on water jacket furnace housing 31 tops; Arrange heat exchange coil 30 in water jacket furnace housing 31 bottoms, material inlet 29 connects with the lower end of heat exchange coil 30, and material outlet 28 connects with the upper end of heat exchange coil 30.Heat exchange coil directly adopts seamless steel pipe to bend by heat-exchanging tube bundle and forms.

In order easily the discharging flue gas to be carried out check and analysis, can on chimney 24 inwalls, oxygen analyzer 25 be set.

In order to accelerate the water circulation, strengthen the heat exchange effect, agitator 32 can also be set in the bottom of water jacket furnace housing 31.

Operation principle of the present invention is: the collection cigarette case 27 of high-temperature flue gas from be immersed in water 26 that submerged burner 21 burning produces overflows, high-temperature flue gas directly with the water heat exchange after, become low-temperature flue gas, from chimney 24 discharges; The natural gas cold fluid flows into from material inlet 29, carries out heat exchange by heat exchange coil 30 and heated water 26, and the natural gas fluid after the heating flows out from material outlet 28 and enters the process unit of appointment.

Claims

1. one kind is novelly directly changed forced-ventilated water jacket furnace, comprises the water jacket furnace housing, and it is characterized in that: on water jacket furnace housing top submerged burner and chimney are set, described submerged burner bottom is provided with the collection cigarette case, and submerged burner and collection cigarette case all immerse in the water; Arrange heat exchange coil at the water jacket furnace housing bottom, the lower end of heat exchange coil is connected material inlet and material outlet respectively with the upper end; Described heat exchange coil directly adopts seamless steel pipe to bend by heat-exchanging tube bundle and forms.

2. the novel forced-ventilated water jacket furnace that directly changes according to claim 1 is characterized in that: on described inner wall of stack oxygen analyzer is set.