CN203043843U - Ejector for ammonia preparation through urea pyrolysis - Google Patents
Ejector for ammonia preparation through urea pyrolysis Download PDFInfo
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- CN203043843U CN203043843U CN 201220189181 CN201220189181U CN203043843U CN 203043843 U CN203043843 U CN 203043843U CN 201220189181 CN201220189181 CN 201220189181 CN 201220189181 U CN201220189181 U CN 201220189181U CN 203043843 U CN203043843 U CN 203043843U
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- phase arm
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Abstract
The utility model relates to an ejector for ammonia preparation through urea pyrolysis. The ejector comprises a liquid-phase main pipe, a gas-phase main pipe, at least two liquid-phase branch pipes and gas-phase branch pipes, wherein the liquid-phase main pipe is provided with a solution inlet; the gas-phase main pipe is sleeved at the periphery of the liquid-phase main pipe, a gap is formed between the inner wall of the gas-phase main pipe and the outer wall of the liquid-phase main pipe, and the gas-phase main pipe is provided with a gas inlet; one end of each liquid-phase branch pipe is communicated with the liquid-phase main pipe, and the other end of each liquid-phase branch pipe is provided with a liquid ejection hole; and the gas-phase branch pipes and the liquid-phase branch pipes are arranged in a matching manner, each gas-phase branch pipe is sleeved at the periphery of each liquid phase branch pipe, one end of each gas-phase branch pipe is communicated with the gas-phase main pipe, and the other end of each gas-phase branch pipe is provided with a gas ejection hole. According to the ejector disclosed by the utility model, an ejection effect of a plurality of traditional ejectors can be achieved just by adopting one ejector; and the ejector is simple and easy to mount.
Description
Technical field
The application belongs to the out of stock field of flue gas, is specifically related to a kind of injector for urea pyrolysis ammonia processed.
Background technology
Nitrogen oxide (NO
x) be one of main atmosphere pollution, at the NO that removes commonly used
xMethod in, selective catalytic reduction (SCR) is because having the NO of removing
xThe efficient height, the advantage that the reducing agent consumption is few and obtained widely using.Selective catalytic reduction (SCR) namely utilize reducing agent selectively with flue gas in NO
xNitrogen (the N of reaction and generation nontoxic pollution-free
2) and water (H
2O) reach the purpose of denitration environmental protection.The reducing agent of using in the SCR technology has liquefied ammonia, ammoniacal liquor and urea.Wherein, the advantage that urea is safe owing to having, raw material sources extensive and be easy to transport and store has obtained using widely.A kind of process for producing ammonia from urea and device thereof are disclosed as Chinese patent literature CN101125666A, this technology is injected to urea liquid in the pyrolysis chamber by atomizer, utilize oil gun to keep the indoor temperature of pyrolysis at 300-650 ℃, make urea fully decompose generation ammonia.Be horizontally arranged with in this pyrolysis chamber and decompose the storehouse, be provided with and the gapped dividing plate of Lower Hold in the storehouse, top of decomposing the storehouse, be provided with and push up the gapped dividing plate in storehouse at Lower Hold, dividing plate laterally is interspersed, and has increased the time of staying of urea.
But in the above-mentioned process for producing ammonia from urea, the structure of urea pyrolysis installation is comparatively complicated, and cost is higher, and needs special thermal source that decomposition chamber is heated, so operating cost is also higher.In order to solve this technical problem, Chinese patent literature CN202061539U discloses a kind of coal fired power plant flue gas denitrification system, comprise the outer amino material formulations prepared from solutions system of boiler that is positioned at, the outer amino substance solution of boiler that is positioned at that is connected with described preparation system is supplied with and control device, and a plurality of amino material solution jet group that is positioned at the boiler reversal chamber, described amino material solution jet group supply with described amino substance solution and control device between be connected by amino material solution conveyor tube road, and described amino material solution jet group to be arranged in flue-gas temperature be in 300-700 ℃ the boiler reversal chamber.This denitrating system is because the flue-gas temperature of injector group present position is 300-700 ℃, so urea sprays into and be decomposed into ammonia herein, need special urea pyrolysis installation and thermal source be set, and greatly reduces the cost of device and the operating cost of technology.
But in the above-mentioned denitrating system, for the atomizing effect that guarantees urea, the transformation efficiency that improves ammonia need arrange a plurality of injector groups, this just makes that the installation of injector group is comparatively complicated, even and do not have simple in structure in the prior art and can realize the injection apparatus that a plurality of nozzles are worked simultaneously.
The utility model content
The utility model need arrange a plurality of injector groups in order to solve urea-spray device of the prior art for the atomizing effect that guarantees urea, the transformation efficiency that improves ammonia, this just makes the installation complicated problems comparatively still of injector group, and then provides a kind of simple in structure and can realize the injector that is used for urea pyrolysis ammonia processed that a plurality of nozzles are worked simultaneously.
The technical scheme of the injector for urea pyrolysis ammonia processed described in the utility model is:
A kind of injector for urea pyrolysis ammonia processed comprises:
Liquid phase is responsible for, and described liquid phase is responsible for and is provided with the solution entrance;
Gas phase is responsible for, and described gas phase is responsible for and is sleeved on the periphery that described liquid phase is responsible for, and is provided with the gap between the outer wall that the inwall that described gas phase is responsible for and described liquid phase are responsible for, and described gas phase is responsible for and is provided with the gas access;
Described injector also is provided with:
The liquid phase arm, described liquid phase arm is at least two, and an end of described liquid phase arm is responsible for described liquid phase and is connected, and the other end of described liquid phase arm is provided with liquid ejection outlet;
The gas phase arm, described gas phase arm and the supporting setting of described liquid phase arm, described gas phase arm is sleeved on described liquid phase arm periphery, and an end of described gas phase arm is responsible for described gas phase and is connected, and the other end of described gas phase arm is provided with gas ejection ports.
The opening direction of a plurality of described gas ejection ports and a plurality of described liquid ejection outlets is consistent.
Described injector also is provided with cooling tube, described cooling tube is provided with the cooling medium entrance and exit, described cooling tube is sleeved on the periphery that described gas phase is responsible for, described cooling tube is provided with perforate, and the jet of described liquid phase arm and described gas phase arm extends to the outside of described cooling tube by described perforate.
Described gas phase is responsible for and is responsible for described liquid phase is coaxial setting, and described gas phase arm is coaxial setting with described liquid phase arm; Described liquid ejection outlet and described gas ejection ports are coaxial opening.
Described liquid phase arm is responsible for perpendicular to described liquid phase; Described gas phase arm is responsible for perpendicular to described gas phase.
Described solution entrance, gas access, cooling medium entrance and exit are positioned at the same end of described injector, and described gas phase arm and described liquid phase arm are positioned at the other end of described injector.
Described injector is provided with telescoping mechanism.
Described telescoping mechanism comprises:
Be connected the Knucle-gear that arranges with the lateral wall of close described solution entrance one end of described injector, described Knucle-gear is two, is symmetricly set on the both sides of described injector;
With two straight chains of described two supporting settings of Knucle-gear, described Knucle-gear is suitable for rotating along described straight chain.
Described telescoping mechanism also is provided with:
Jacket casing, described jacket casing are socketed in described injector near an end of described solution entrance, and described two Knucle-gears are arranged on the lateral wall of described jacket casing;
Power set, described power set drive described Knucle-gear and move along described straight chain.
The diameter ratio of the described liquid phase person in charge and described liquid phase arm is greater than 10; The diameter ratio of the described gas phase person in charge and described gas phase arm is greater than 10.
The diameter ratio of the described liquid phase person in charge and described liquid phase arm is greater than 30; The diameter ratio of the described gas phase person in charge and described gas phase arm is greater than 30.
Injector advantage for urea pyrolysis ammonia processed described in the utility model is:
(1) injector for urea pyrolysis ammonia processed described in the utility model, be provided with the liquid phase person in charge, the gas phase person in charge, described gas phase is responsible for and is sleeved on the periphery that described liquid phase is responsible for, and is provided with the gap between the outer wall that the inwall that described gas phase is responsible for and described liquid phase are responsible for; Also be provided with the liquid phase arm and with the gas phase arm of the supporting setting of described liquid phase arm.The utility model is by arranging plural liquid phase arm and gas phase arm, the contact area that injector sprays into the interior urea liquid of stove and flue gas is big, mix fully, resolution ratio and the utilization rate of urea are higher, and adopt an injector can reach the jeting effect of a plurality of conventional injector, equipment is simple, is easy to install.
(2) injector for urea pyrolysis ammonia processed described in the utility model; be provided with cooling tube; described cooling tube is to be enclosed within outside the described gas phase person in charge; can lead to compressed air or water in the cooling tube; reduce the temperature of injector; protect described injector to avoid high temperature to damage, prolong the service life of injector.
(3) injector for urea pyrolysis ammonia processed described in the utility model, the opening direction that a plurality of described gas ejection ports and a plurality of described liquid ejection outlets are set is consistent.This setup makes the injection of urea liquid can be in stove spray to a direction simultaneously, thereby the heating temperature that guarantees urea liquid is even, has effectively prevented urea liquid because the flow field is inhomogeneous etc. former thereby low temperature crystallization and high temperature sintering problem take place.
(4) injector for urea pyrolysis ammonia processed described in the utility model, described injector is provided with telescoping mechanism, and described telescoping mechanism can go deep into whole injector or withdraw from the stove, so that the cleaning of injector, maintenance and replacing.
(5) injector for urea pyrolysis ammonia processed described in the utility model arranges described liquid phase and is responsible for the diameter ratio of described liquid phase arm and described gas phase and is responsible for diameter ratio with described gas phase arm all greater than 10; And further be preferably greater than 30.Reason is, by this setup, makes that the urea liquid flow of each arm ejection is the same on the injector, and atomizing effect too.
Description of drawings
Content of the present utility model is easier clearly to be understood in order to make, below in conjunction with specific embodiments and the drawings, the utility model is described in further detail, wherein,
Shown in Figure 1 is the injector device schematic diagram for urea pyrolysis ammonia processed described in the utility model;
Shown in Figure 2 is the injector device schematic diagram that is used for urea pyrolysis ammonia processed that is provided with telescoping mechanism described in the utility model;
Reference numeral is expressed as among the figure:
The 1-liquid phase is responsible for, and the 2-gas phase is responsible for, 3-gas phase arm, 4-liquid phase arm, 5-cooling tube, 6-solution entrance, the 7-gas access, 8-cooling medium entrance, the 9-gas phase is responsible for liquid phase and is responsible for hold-down nut, the hold-down nut that 10-cooling tube and gas phase are responsible for, 11-Knucle-gear, 12 straight chains, 13-jacket casing.
The specific embodiment
The injector that is used for urea pyrolysis ammonia processed described in the present embodiment comprises as shown in Figure 1:
Liquid phase is responsible for 1, and described liquid phase is responsible for 1 and is provided with solution entrance 6;
Gas phase is responsible for 2, and the described gas phase person in charge 2 is sleeved on described liquid phase and is responsible for 1 periphery, is provided with the gap between the described gas phase person in charge's 2 inwall and the described liquid phase person in charge's 1 the outer wall, and described gas phase is responsible for 2 and is provided with gas access 7; Described gas phase is responsible for the liquid phase person in charge and is fixedlyed connected by hold-down nut 9;
Liquid phase arm 4, described liquid phase arm 4 is at least two, and an end of described liquid phase arm 4 is responsible for 1 with described liquid phase and is connected, and the other end of described liquid phase arm 4 is provided with liquid ejection outlet;
Gas phase arm 3, described gas phase arm 3 and described liquid phase arm 4 supporting settings, described gas phase arm 3 is sleeved on described liquid phase arm 4 peripheries, and an end of described gas phase arm 3 is responsible for 2 with described gas phase and is connected, and the other end of described gas phase arm 3 is provided with gas ejection ports.
As preferably, described liquid ejection outlet is set present embodiment and described gas ejection ports is coaxial opening, and the opening direction of a plurality of described gas ejection ports and a plurality of described liquid ejection outlets is consistent.As selectable embodiment, the opening of described gas ejection ports and described liquid ejection outlet also can be towards different directions or disalignment setting; Same as preferred, the person in charge of gas phase described in the present embodiment 2 is responsible for 1 also coaxial setting with described liquid phase, and described liquid phase arm 4 is responsible for 1 perpendicular to described liquid phase; Described gas phase arm 3 is responsible for 2 perpendicular to described gas phase.The person in charge 1 of liquid phase described in the present embodiment is 15 with the diameter ratio of described liquid phase arm 4.
Described injector also is provided with cooling tube 5, described cooling tube 5 is provided with cooling medium entrance 8 and outlet, described cooling tube 5 is sleeved on described gas phase and is responsible for 2 periphery, described cooling tube 5 is provided with perforate, the openend of described liquid phase arm 4 and described gas phase arm 3 extends to the outside of described cooling tube 5 by described perforate, and described cooling tube is responsible for gas phase and is fixedlyed connected by hold-down nut 10.
The course of work of the injector described in the present embodiment is:
Feed urea liquids from the described liquid phase person in charge's 1 solution entrance 6, feed compressed air from the described gas phase person in charge's 2 gas access 7, described urea liquid is by the liquid ejection outlet ejection of described liquid phase arm 4, compressed air is by the gas ejection ports ejection of gas phase arm 3 simultaneously, under the compressed-air actuated effect of ejecting, the liquid that liquid ejection outlet comes out is atomized.Feed cooling water by described cooling medium entrance 8 simultaneously, described cooling water flows out back recirculation from described cooling medium outlet to be used, and described injector is cooled off, and protects described injector to avoid high temperature to damage, and prolongs the service life of injector.
The injector that is used for urea pyrolysis ammonia processed described in the present embodiment comprises as shown in Figure 2:
Liquid phase is responsible for 1, and described liquid phase is responsible for 1 and is provided with solution entrance 6;
Gas phase is responsible for 2, and the described gas phase person in charge 2 is sleeved on described liquid phase and is responsible for 1 periphery, is provided with the gap between the described gas phase person in charge's 2 inwall and the described liquid phase person in charge's 1 the outer wall, and described gas phase is responsible for 2 and is provided with gas access 7; Described gas phase is responsible for the liquid phase person in charge and is fixedlyed connected by hold-down nut 9;
Liquid phase arm 4, described liquid phase arm 4 is at least two, and an end of described liquid phase arm 4 is responsible for 1 with described liquid phase and is connected, and the other end of described liquid phase arm 4 is provided with liquid ejection outlet;
Gas phase arm 3, described gas phase arm 3 and described liquid phase arm 4 supporting settings, described gas phase arm 3 is sleeved on described liquid phase arm 4 peripheries, and an end of described gas phase arm 3 is responsible for 2 with described gas phase and is connected, and the other end of described gas phase arm 3 is provided with gas ejection ports.
Described liquid ejection outlet is set present embodiment and described gas ejection ports is coaxial opening, and the opening direction of a plurality of described gas ejection ports and a plurality of described liquid ejection outlets is consistent; The described gas phase person in charge 2 is responsible for 1 also coaxial setting with described liquid phase, and described liquid phase arm 4 is responsible for 1 perpendicular to described liquid phase; Described gas phase arm 3 is responsible for 2 perpendicular to described gas phase.The person in charge 1 of liquid phase described in the present embodiment is 100 with the diameter ratio of described liquid phase arm 4.
Described injector is provided with cooling tube 5, described cooling tube 5 is provided with cooling medium entrance 8 and outlet, described cooling tube 5 is sleeved on described gas phase and is responsible for 2 periphery, described cooling tube 5 is provided with perforate, and the openend of described liquid phase arm 4 and described gas phase arm 3 extends to the outside of described cooling tube 5 by described perforate.The entrance of solution described in the present embodiment 6, gas access 7, cooling medium entrance 8 and outlet are positioned at the same end of described injector, described gas phase arm 3 and described liquid phase arm 4 are positioned at the other end of described injector, and described cooling tube is responsible for gas phase and is fixedlyed connected by hold-down nut 10.
Also being provided with the described telescoping mechanism of telescoping mechanism on the described injector comprises: be connected the Knucle-gear 11 that arranges with the lateral wall of close described solution entrance 6 one ends of described injector, described Knucle-gear 11 is two, is symmetricly set on the both sides of described injector; Two straight chains with described two Knucle-gear 11 supporting settings, described Knucle-gear 11 is suitable for rotating along described straight chain, described telescoping mechanism also is provided with jacket casing 13, described jacket casing 13 is socketed in described injector near an end of described solution entrance 6, and described two Knucle-gears 11 are arranged on the lateral wall of described jacket casing 13.As selectable embodiment, described telescoping mechanism also can not arrange jacket casing 13, and described Knucle-gear 11 is directly installed on the sidewall of described injector.Telescoping mechanism also is provided with power set, and described power set drive described Knucle-gear 11 and move along described straight chain 12, and power set described in the present embodiment are motor.
The course of work of the injector described in the present embodiment is:
Feed urea liquids from the described liquid phase person in charge's 1 solution entrance 6, feed compressed air from the described gas phase person in charge's 2 gas access 7, described urea liquid is by the liquid ejection outlet ejection of described liquid phase arm 4, compressed air is by the gas ejection ports ejection of gas phase arm 3 simultaneously, under the compressed-air actuated effect of ejecting, the liquid that liquid ejection outlet comes out is atomized.Feed cooling water by described cooling medium entrance 8 simultaneously, described cooling water flows out back recirculation from described cooling medium outlet to be used, and described injector is cooled off, and protects described injector to avoid high temperature to damage, and prolongs the service life of injector.
Injector described in the present embodiment, when described injector breaks down need overhaul the time, can drive described Knucle-gear 11 by described motivation mechanism moves along the direction of described straight chain 12 outside burner hearth, thereby described injector is shifted out burner hearth to be overhauled, after maintenance finishes, move to the direction in the burner hearth along described straight chain 12 driving described Knucle-gear 11 by described motivation mechanism, described injector is pushed back burner hearth again.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (10)
1. injector that is used for urea pyrolysis ammonia processed comprises:
Liquid phase is responsible for, and described liquid phase is responsible for and is provided with the solution entrance;
Gas phase is responsible for, and described gas phase is responsible for and is sleeved on the periphery that described liquid phase is responsible for, and is provided with the gap between the outer wall that the inwall that described gas phase is responsible for and described liquid phase are responsible for, and described gas phase is responsible for and is provided with the gas access;
It is characterized in that described injector also is provided with:
The liquid phase arm, described liquid phase arm is at least two, and an end of described liquid phase arm is responsible for described liquid phase and is connected, and the other end of described liquid phase arm is provided with liquid ejection outlet;
The gas phase arm, described gas phase arm and the supporting setting of described liquid phase arm, described gas phase arm is sleeved on described liquid phase arm periphery, and an end of described gas phase arm is responsible for described gas phase and is connected, and the other end of described gas phase arm is provided with gas ejection ports.
2. the injector for urea pyrolysis ammonia processed according to claim 1 is characterized in that, the opening direction of a plurality of described gas ejection ports and a plurality of described liquid ejection outlets is consistent.
3. the injector for urea pyrolysis ammonia processed according to claim 1 and 2, it is characterized in that, described injector also is provided with cooling tube, described cooling tube is provided with the cooling medium entrance and exit, described cooling tube is sleeved on the periphery that described gas phase is responsible for, described cooling tube is provided with perforate, and the jet of described liquid phase arm and described gas phase arm extends to the outside of described cooling tube by described perforate.
4. the injector for urea pyrolysis ammonia processed according to claim 3 is characterized in that, described gas phase is responsible for and is responsible for described liquid phase is coaxial setting, and described gas phase arm is coaxial setting with described liquid phase arm;
Described liquid ejection outlet and described gas ejection ports are coaxial opening;
Described liquid phase arm is responsible for perpendicular to described liquid phase; Described gas phase arm is responsible for perpendicular to described gas phase.
5. the injector for urea pyrolysis ammonia processed according to claim 4, it is characterized in that, described solution entrance, gas access, cooling medium entrance and exit are positioned at the same end of described injector, and described gas phase arm and described liquid phase arm are positioned at the other end of described injector.
6. the injector for urea pyrolysis ammonia processed according to claim 5 is characterized in that, described injector is provided with telescoping mechanism.
7. the injector for urea pyrolysis ammonia processed according to claim 6 is characterized in that, described telescoping mechanism comprises:
Be connected the Knucle-gear that arranges with the lateral wall of close described solution entrance one end of described injector, described Knucle-gear is two, is symmetricly set on the both sides of described injector;
With two straight chains of described two supporting settings of Knucle-gear, described Knucle-gear is suitable for rotating along described straight chain.
8. the injector for urea pyrolysis ammonia processed according to claim 7 is characterized in that, described telescoping mechanism also is provided with:
Jacket casing, described jacket casing are socketed in described injector near an end of described solution entrance, and described two Knucle-gears are arranged on the lateral wall of described jacket casing;
Power set, described power set drive described Knucle-gear and move along described straight chain.
9. the injector for urea pyrolysis ammonia processed according to claim 8 is characterized in that, the diameter ratio of the described liquid phase person in charge and described liquid phase arm is greater than 10; The diameter ratio of the described gas phase person in charge and described gas phase arm is greater than 10.
10. the injector for urea pyrolysis ammonia processed according to claim 9 is characterized in that, the diameter ratio of the described liquid phase person in charge and described liquid phase arm is greater than 30; The diameter ratio of the described gas phase person in charge and described gas phase arm is greater than 30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220189181 CN203043843U (en) | 2012-04-28 | 2012-04-28 | Ejector for ammonia preparation through urea pyrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220189181 CN203043843U (en) | 2012-04-28 | 2012-04-28 | Ejector for ammonia preparation through urea pyrolysis |
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| Publication Number | Publication Date |
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| CN203043843U true CN203043843U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220189181 Expired - Lifetime CN203043843U (en) | 2012-04-28 | 2012-04-28 | Ejector for ammonia preparation through urea pyrolysis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173718A (en) * | 2018-11-08 | 2019-01-11 | 华能国际电力股份有限公司 | Calcium method-based combined desulfurization, denitrification and demercuration method and device |
-
2012
- 2012-04-28 CN CN 201220189181 patent/CN203043843U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173718A (en) * | 2018-11-08 | 2019-01-11 | 华能国际电力股份有限公司 | Calcium method-based combined desulfurization, denitrification and demercuration method and device |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Ejector for ammonia preparation through urea pyrolysis Effective date of registration: 20150211 Granted publication date: 20130710 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Beijing Lowcarbon Environment Protection Technology Co., Ltd. Registration number: 2015990000136 |
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Granted publication date: 20130710 |
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