CN2506879Y

CN2506879Y - Natural gas gasifying tip

Info

Publication number: CN2506879Y
Application number: CN 01265765
Authority: CN
Inventors: 黄崇锡; 张相武; 杜炜东
Original assignee: SHAANXI YANGLING ASTRONAUTICS WATER SAVING SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: SHAANXI YANGLING ASTRONAUTICS WATER SAVING SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2001-10-23
Filing date: 2001-10-23
Publication date: 2002-08-21
Anticipated expiration: 2011-10-23

Abstract

The utility model relates to a natural gas gasifying burner which can spray oxygen and natural gas into a converter for burning. The utility model consists of a central tube which is sleeved at the same axis and has a streamline and shrunk style mixed air outlet in the front, an intermediate ring tube and an outer ring tube. A steam ring tube is arranged on the outside of the outer ring tube, and a cooling water jacket tube with a closed front-end is arranged on the outside of the steam ring tube. A positioning ring is arranged between each ring tube for an axial and a radial positioning. When in operation, two ways of oxygen (or fuel gas) are respectively in the outer ring tube and the central tube and one way of fuel gas (or oxygen) is in the intermediate ring tube, and the three ways of air are impacted and mixed at a certain angle on the outlet of the burner, and then the mixed air is under a peroxidizing coefficient sprayed to a converter for burning. The utility model has the advantages that the efficiency is high; the use is reliable; the service life is long; the pollution is less and the economical effect is distinct, etc.

Description

The natural gas gasifying burner

The utility model belongs to the petrochemical iy produced equipment technical field, relates to a kind of Ammonia Production equipment combustor nozzle, particularly a kind ofly oxygen and natural gas can be crossed oxygen quotient and be sprayed into the natural gas gasifying burner that reburner burns by certain.

Burner is the critical component of pressure gasification process in the production of synthetic ammonia, and it is worked under high temperature, high pressure.Present Ammonia Production device well known in the art all is to adopt heavy oil partial oxidation process to produce, owing to exist heavy oil price height, consume defective such as big and seriously polluted, restricted the production efficiency and the economic benefit of manufacturing enterprise to a great extent, simultaneously also there is very big destruction in socio-ecological environment.In recent years, because domestic and international rise in oil price, be that the cost of the synthesis ammonia plant of raw material also rises thereupon significantly with oil, force manufacturing enterprise to have to change raw material route in the hope of basing oneself upon and develop in new environment.The fast development of building along with present domestic gas engineering and to the raising day by day of environmental requirement, natural gas progressively becomes the important energy source in gas-producing area and gas transmission line city along the line, replaces heavy oil will become enterprise undoubtedly as the Ammonia Production raw material optimal selection with natural gas.Under this background, whether can transform synthesis ammonia production method as the gas by partial oxidation of natural method by heavy oil partial oxidation process the original production apparatus structure not being done under the precondition of bigger change, need problem to be solved with regard to becoming this area person skilled.

The purpose of this utility model is the problems referred to above of existing at the present technique field, provides a kind of rational in infrastructure, dependable performance, efficient height, the life-span is long, pollution-free and use good in economic efficiency natural gas gasifying burner.

Be used to realize that the technical solution of foregoing invention purpose is such: the natural gas gasifying burner that is provided is a kind of burner of employing three flow channel type spout structures, it is by coaxial being nested with and anterior central tube with streamline shrinkage type mixed gas outlet portion from the inside to the outside, middle endless tube and outer endless tube constitute, endless tube is provided with a steam loop outside, outside steam loop, be provided with the cooling water pipe of a preceding end closure, adorn a ring-type watershed partition in cooling jacket tube passage interpolation, utilize this watershed partition that the cooling water pipe internal channel is divided into cooling water inlet passage and exit passageway two parts.All adopt locating ring to carry out axially and radial location in the practical structures between each endless tube.During work, two-way oxygen (or fuel gas) is in outer endless tube and central tube respectively, one road fuel gas (or oxygen) is at middle endless tube, three road gases clash at a certain angle mutually in burner export department, fully mix, and sprayed into reburner under the oxygen quotient and burn, be converted into available gas hydrogen and carbon monoxide most through after the combustion reaction suitable the mistake, carbon monoxide is converted into hydrogen again, and hydrogen and nitrogen finally generate synthetic ammonia.In the product design; concrete condition according to furnace pressure and furnace temperature; be protection burner and near the safe and reliable work in furnace wall; endless tube is set up a steam loop outward outside; outside the burner steam loop, set up a cooling water pipe; by mode, reach protection burner outer wall and head and do not burnt out and improve the purpose in burner life-span like this with high-pressure cooling water mandatory cooling burner outer wall and head.For eliminating the thermal stress that each runner fluid temperature (F.T.) difference causes, also adopted corresponding thermal compensation version on the burner.

Below with reference to accompanying drawing behind the literary composition the utility model content is described further, this accompanying drawing is the structural representation of a specific embodiment of the utility model.

Referring to accompanying drawing, this natural gas gasifying burner is made of the coaxial central tube that is nested with 1, middle endless tube 2, outer endless tube 3, steam loop 4 and cooling water pipe 5 from the inside to the outside, and presses the setting of notch cuttype arrangement mode.Be respectively equipped with on endless tube 3 and steam loop 4 rear walls outside an air inlet 31 that is used to import oxygen (or fuel gas) and and the air inlet 41 of input steam, be provided with an air inlet 21 that is used to import fuel gas (or oxygen) in middle endless tube 2 rear ends.Middle endless tube 2 and outside an expansion loop 7 all is housed on the endless tube 3.Cooling water pipe 5 is nested with outside steam loop 4 walls, and design has a ring-type watershed partition 6 in cooling water pipe 5, thus this sleeve pipe internal channel is separated into the intake channel and the exit passageway that enter and reflux for cooling water.Number in the figure 51 is the cooling water inlet, and 52 is coolant outlet, and 8 is axial and radial location ring.

Natural gas gasifying burner described in the utility model has the efficient height, use is reliable, the life-span is long, it is few to pollute With advantages such as remarkable in economical benefits, the The actual running results of product shows: the effective product that adopts equipment behind this burner The gas rate has on average reached 95%, and the production cost of every ton of synthetic ammonia of preresearch estimates can fall when producing for the synthesis of ammonia Low more than 10%, former be used for when burning oil purifying flushing water that available gas removes carbon black change burn natural gas after Need not re-use, thereby greatly save water power consumption, and burner long-time doing in the high temperature stove baked also after stopping The scaling loss metaboly can not appear. In view of the high speed that China will enter natural gas in following 10 years is from now on sent out Exhibition period is by " extra large gas disembarkation ", " enforcement of the engineering schemes such as West-east Gas and Liquefied Natural Gas Import To improve greatly the proportion of China's natural gas in the primary energy structure, so the utility model product Succeed in developing petrochemical industry is carried out that oil changes that gas, coal change the gas technological transformation and even to effective utilization of natural gas energy resource All has very important effect.

Claims

1, a kind of natural gas gasifying burner, it is characterized in that it is by coaxial being nested with and anterior central tube (1), middle endless tube (2) and outer endless tube (3) formation with streamline shrinkage type mixed gas outlet portion from the inside to the outside, endless tube (3) is provided with a steam loop (4) outside, outside steam loop (4), be provided with the cooling water pipe (5) of a preceding end closure, a ring-type watershed partition of plug-in mounting (6) in cooling water pipe (5) passage utilizes this watershed partition (6) that cooling water pipe (4) internal channel is divided into cooling water inlet passage and exit passageway two parts.

2, natural gas gasifying burner as claimed in claim 1, it is characterized in that central tube (1), middle endless tube (2), outer endless tube (3), steam loop (4) and cooling water pipe (5) press the coaxial setting of notch cuttype arrangement mode, all adopt locating ring to carry out axially and radial location between each endless tube, respectively be provided with an air inlet (31,41) on endless tube (3) and steam loop (4) rear wall outside, be provided with air inlet (21) in middle endless tube (2) rear end.

3, natural gas gasifying burner as claimed in claim 1, it is characterized in that middle endless tube (2) and outside an expansion loop (7) all is housed on the endless tube (3).