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Ammonia oxidation furnace water wall

An ammonia oxidation furnace and water-cooled wall technology, which is applied in the field of water-cooled walls, can solve problems such as container wall damage, and achieve the effects of increasing stability, reducing temperature and prolonging service life.

Active Publication Date: 2016-03-30
OSCHATZ ENERGY & ENVIRONMENT NANJING
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the oxidation catalytic reaction of ammonia is a strong exothermic reaction, the temperature of the flue gas here can reach above 800oC. If the outer wall of the container directly contacts the flue gas, it will cause damage to the container wall. The existing technology has not yet solved this problem.

Method used

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  • Ammonia oxidation furnace water wall
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Embodiment Construction

[0022] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 , 2 , Shown in 3, the water-cooled wall of the ammonia oxidation furnace includes: the condensation wall 3 made up of a plurality of condensation pipes 301 placed inside the container wall 1 of the ammonia oxidation furnace, connected between the steam drum and the condensation pipe 301 and used for temporarily storing condensation The water header 5, the header 5 is composed of: an inlet header 501, an outlet header 502; a plurality of connection pipes 2 connected between the header 5 and the condensation wall 3, connected between the connection pipe 2 and the condensation pipe 301 Between the condensing pipes 301 and the reflux member, connecting the condensing pipes 301 and used to block the leakage of flue gas; the central axis of the condensing pipe 301 is perpendicular to the central axis of the ammonia oxid...

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Abstract

The invention discloses a water-cooled wall of an ammonia oxidation furnace. The water-cooled wall comprises a condensing wall which comprises a plurality of condensing pipes and is arranged on the inner side of a container wall of the ammonia oxidation furnace, a header which is connected between a steam drum and the condensing pipes and used for temporarily storing condensate, a plurality of connecting pipes connected between the header and the condensing wall, a reflux piece for connecting a loop and a blocking piece which is used for connecting the condensing pipes and blocking flue gas from being in contact with the container wall; the central axis of the condensing pipes is vertical to the central axis of the ammonia oxidation furnace. The invention provides the water-cooled wall which is used for protecting the container wall of the ammonia oxidation furnace and can absorb heat in the high-temperature flue gas.

Description

technical field [0001] A water-cooled wall, especially a water-cooled wall for an ammonia oxidation furnace. Background technique [0002] The ammonia oxidation furnace is a device for ammonia and oxygen in the air to form nitrides through catalytic reaction. It is conical in shape, with a porous gas distribution plate in the upper part, a platinum mesh in the middle, a porous gas distribution plate in the lower part, and a steam superheating pipe in the lower part. Ammonia-air mixture enters from the top, under the action of platinum mesh catalyst, generates nitrogen oxides, and enters the waste heat boiler from the bottom. Since the oxidation catalytic reaction of ammonia is a strong exothermic reaction, the flue gas temperature here can reach above 800oC. If the outer wall of the container directly contacts the flue gas, it will cause damage to the container wall. The prior art has not solved this problem. Contents of the invention [0003] In order to solve the defici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/28
Inventor 王正兴王倩倩
Owner OSCHATZ ENERGY & ENVIRONMENT NANJING
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