CN201132102Y

CN201132102Y - Ammine-burning device for recovering sulfur

Info

Publication number: CN201132102Y
Application number: CNU2007203028983U
Authority: CN
Inventors: 朱元彪; 陈奎; 李俊杰; 戚元庆; 袁炎均; 冯鲁苗; 杨晓鸣
Original assignee: ZHENHAI PETROCHEMICAL ENGINEERING Co Ltd
Current assignee: Zhenhai Petrochemical Engineering Co., Ltd.
Priority date: 2007-12-11
Filing date: 2007-12-11
Publication date: 2008-10-15
Anticipated expiration: 2017-12-11

Abstract

The utility model relates to an ammonia burning device use for sulfur recovery. The ammonia burning device comprises a reaction chamber (1) used for mixing gases and a burner nozzle (2) mechanism used for burning the gases, and is characterized in that only one burner nozzle (2) mechanism and only one reaction chamber (1) are provided, the burner nozzle mechanism (2) is connected with a first pre-heater (3) used for heating acidic gas and a second pre-heater (4) used for heating the air through gas pipes, the burner nozzle (2) mechanism is connected with the tapered inlet opening (11) of the reaction chamber (1), and the tapered inlet opening (11) is contracted from outside to inside. Compared with the prior art, the ammonia burning device has the advantages that because the structure of a burner nozzle and a reaction chamber is adopted, the structure is simplified, and the production cost, the processing cost and the running cost of the equipment can be greatly reduced; ammoniacal acidic gas and clean acidic gas are mixed together to enter the burner nozzle, and thus complex control brought by two ways of acidic gas can be avoided, therefore, the requirement on the overall control is reduced.

Description

Sulphur recovery is with burning ammonia device

Technical field

The utility model relates to a kind of burning ammonia device, relates in particular to a kind of burning ammonia device that is applied to sulfur recovery system.

Background technology

At present, the burning ammonia technology of sulfur recovery facility mainly contains a burner two reative cells and two burners, one reative cell what use, and its principle is all the same, sour gas by with air burning three minutes one H in the sour gas ₂S changes into SO ₂, impurity completing combustions such as ammonia, hydrocarbon, mercaptan, cyanogen generate CO in the sour gas ₂, H ₂O, N ₂Deng, make reacting gas in reacting furnace, reach the maximum sulphur conversion ratio about 70% of thermodynamical equilibrium, impurity completing combustion does not influence the device operation and guarantees product quality in the sour gas simultaneously.Ammonia in the sour gas must generate N by with air burning it thoroughly being decomposed ₂And H ₂If O is NH in the gas after the burning ₃Content is below 100～150PPM, and it just can not bring any influence to sulfur recovery facility.The completing combustion of ammonia component mainly depends on burner and reative cell in the sour gas, and the performance of burning ammonia depends primarily on three factors: ignition temperature is height, certain time of staying, the mixed effect of vortex attitude enough, and oxygen content has determined the growing amount of NO.

Though above-mentioned two kinds of schemes have solved broken ammonia problem in the sulfur recovery facility sour gas well, effect is not very desirable in the actual application.Wherein, a burner two reative cells mainly contain following weak point: at first, the cleaning sour gas is had special requirement, require sour gas not hydrocarbonaceous, ammonia, cyanogen, mercaptan etc., otherwise can cause carbon distribution and generate amine salt; Secondly, two road sour gas enter reative cell separately, to the control complexity with air mass flow of how distributing of two road sour gas; At last, reaction temperature requires to be controlled at 1300 ℃.Two burners, one reative cell mainly contains following weak point: at first, the material of burner is had very high requirement, because sour gas ignition temperature height, the burner material is selected difficult; Secondly, need two burner investments high; Moreover two road sour gas enter burner separately, to the control complexity with air mass flow of how distributing of two road sour gas; At last, reaction temperature requires to be controlled at 1300～1700 ℃.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of control simple at the above-mentioned state of the art, and with low cost and respond well sulphur recovery is with burning ammonia device.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this sulphur recovery is with burning ammonia device, comprise reative cell that is used for the gas mixing and the burner mechanism that is used to burn, it is characterized in that described burner mechanism and reative cell are to single, burner mechanism is connected with second preheater that is used to heat first preheater of sour gas and is used to add hot-air by wireway, burner mechanism is connected with the taper import of reative cell, and this taper import ecto-entad bore dwindles.

Further, have in the described burner mechanism and can make the air that enters produce the airstream deflector of screw.

As preferably, described burner mechanism specifically can comprise air gun, burning torch with sour gas import and the housing with air intlet, this housing is fixedly installed in the reative cell inlet end with air gun and burning torch, and described airstream deflector then is positioned at around the housing air gun leading section.

Compared with prior art, advantage of the present utility model is: owing to adopt a burner one reaction chamber structure, simplify the structure, make the production and processing of equipment and operating cost greatly reduce; Contain the ammonia sour gas and be mixed into one the tunnel and enter burner with the cleaning sour gas, the complexity control of having avoided two road sour gas to bring is so whole control requires to reduce; In the actual application, reaction temperature is controlled at more than 1250 ℃ just passable, and the broken ammonia of situation that reaches 30% volume ratio at ammonia concentration in the sour gas is respond well.

Description of drawings

Fig. 1 is the present embodiment applicating flow chart.

Fig. 2 is the example structure schematic diagram.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment: with reference to figure 1, contain the ammonia sour gas with the cleaning sour gas mixes with, enter the first preheater device 3, burner mechanism 2, the other end are all introduced by wireway in the heating back, air is through second preheater 4, burner mechanism 2 is introduced by wireway in heating back, and sour gas fully mixes through the vortex attitude with air and since its pressure drop ratio in mixed process common want height, mixed effect has obtained reinforcement, makes NH in the sour gas ₃All oxidation generates N ₂And H ₂O, the control temperature is more than 1250 ℃, and the sour gas air distribution makes reaction gas be in the oxygen deprivation state, H in the control mist ₂S/SO ₂Molecular proportion is 2.Final reaction gas enters next processing step from boiler 5.

With reference to figure 2, in the present embodiment, burner 2 mechanisms and reative cell 1 are to single, and burner 2 mechanisms are connected with the taper import 11 of reative cell 1, and taper import 11 ecto-entad bores dwindle.Taper import 11 can make the burning gases that flow along wall at reative cell 5 obtain again distributing, and has guaranteed the abundant mixing of burning gases.

Burner 9 mechanisms comprise air gun 6, burning torch 7 and housing 8, air gun 6 has sour gas import 61, housing 8 has air intlet 81, housing 8 is fixedly installed in reative cell 1 inlet end with air gun 6 and burning torch 7, one airstream deflector 9 is positioned at around housing 8 air guns 6 leading sections, and airstream deflector 9 can make the air that enters produce screw.

Claims

1, a kind of sulphur recovery is with burning ammonia device, comprise reative cell (1) that is used for the gas mixing and burner (2) mechanism that is used to burn, it is characterized in that described burner mechanism (2) and reative cell (1) are single, burner mechanism (2) is connected with second preheater (4) that is used to heat first preheater (3) of sour gas and is used to add hot-air by wireway, burner mechanism (2) is connected with the taper import (11) of reative cell (1), and this taper import (11) ecto-entad bore dwindles.

2, sulphur recovery according to claim 1 is characterized in that having in the described burner mechanism (2) airstream deflector (9) that can make the air generation screw that enters with burning ammonia device.

3, sulphur recovery according to claim 2 is with burning ammonia device, it is characterized in that described burner mechanism (2) comprises air gun (6), burning torch (7) with sour gas import (61) and the housing (8) with air intlet (81), this housing (8) is fixedly installed in reative cell (1) inlet end with air gun (6) and burning torch (7), and described airstream deflector (9) then is positioned at around housing (8) air gun (6) leading section.