CN210457492U

CN210457492U - Urea hydrolyzer

Info

Publication number: CN210457492U
Application number: CN201921027716.5U
Authority: CN
Inventors: 韩复林
Original assignee: Tianjin Yiyade Environmental Technology Co Ltd
Current assignee: Tianjin Yiyade Environmental Technology Co Ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-05-05
Anticipated expiration: 2029-07-03

Abstract

The utility model discloses a urea hydrolyzer, which comprises a hydrolyzer shell, wherein the hydrolyzer shell is provided with a safety valve port, a pressure gauge port, a standby outlet, a pressure change port, a liquid level meter port, a waste liquid outlet, a sewage discharge port, a urea solution inlet, supporting legs, a manhole, a hole cover, a handle and a heating port, the heating port is in flange connection with a steam heater, the steam heater is provided with a steam inlet, a steam condensate outlet, a heating pipe group and a switch handle, the hydrolyzer shell is provided with a demister mounting port, the demister mounting port is in flange connection with a demister, the demister is connected with an ammonia outlet and a gas-liquid separation net, the gas-liquid separation net is provided with a supporting boss, the demister mounting port is connected with an ammonia pipeline, the input end of the ammonia pipeline is connected with a runner box, the runner box is connected with two gas inlet hoppers, an inner, the L-shaped retainer ring is fixedly connected with a rotating shaft, and the rotating shaft is connected with a rotating wheel and stirring blades.

Description

Urea hydrolyzer

Technical Field

The utility model belongs to ammonia production facility field, concretely relates to urea hydrolysising device.

Background

A large amount of Nitrogen Oxides (NOX) can be generated in the production process of a power plant, the environment is greatly polluted, denitration treatment is mainly adopted at present, ammonia is used as a reducing agent in the SCR denitration process, the preparation method mainly comprises three modes of liquid ammonia evaporation, urea hydrolysis and urea pyrolysis, and the urea hydrolysis method has the advantages of high safety, small occupied area, low operation cost and the like, so the method is gradually popularized in the field of flue gas denitration in two years.

However, the urea solution distributor of the traditional hydrolyzer is positioned at the bottom of the shell of the hydrolyzer and is connected with the inner wall of the shell of the hydrolyzer, so that the pollution discharge of the hydrolyzer is not facilitated, the urea has biuret impurities, the biuret can be accumulated continuously along with the addition of the urea solution, the biuret solubility is low, the biuret can be deposited at the bottom of the shell of the hydrolyzer when the concentration is too high, and if the urea solution distributor is positioned at the bottom of the shell of the hydrolyzer, the impurity discharge is not facilitated; moreover, because the common hydrolysis technology adopts steam heating, the reaction speed is low, the efficiency is low, and the method is not suitable for large-scale industry; based on the above problems, it is urgently needed to provide a urea hydrolyzer.

SUMMERY OF THE UTILITY MODEL

To the problem that the above-mentioned background art provided, the utility model aims at: aims to provide a urea hydrolyzer. In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

the urea hydrolyzer comprises a hydrolyzer shell, wherein a safety valve port, a pressure gauge port, a spare outlet, a pressure change port, a liquid level meter port, a waste liquid outlet, a drain outlet, a urea solution inlet and four supporting legs are arranged on the hydrolyzer shell, a manhole is arranged on the hydrolyzer shell, the manhole is hinged with a manhole cover, a handle is connected on the manhole cover, a heating port is arranged on the hydrolyzer shell, the heating port is connected with a steam heater through a flange, the steam heater is provided with a steam inlet, a steam condensate outlet, a heating pipe group and a switch handle, a demister mounting port is arranged on the hydrolyzer shell, a demister is connected on the demister mounting port through a flange, the demister is connected with a demister, the demister is connected with an ammonia gas outlet, a gas-liquid separation net is arranged in the demister, a supporting boss is arranged, the defroster installing port is connected with the ammonia pipeline, ammonia pipeline input is connected with the runner box, be connected with two air intakes fill on the runner box, spacing ring and outer spacing ring in the runner box fixedly connected with, placed L shape retaining ring on the interior spacing ring, rolling bearing has been placed between interior spacing ring and the L shape retaining ring, L shape retaining ring fixedly connected with rotation axis, the rotation axis is located one and serves fixedly connected with runner in the runner box, rotation axis other end fixedly connected with stirring vane.

Further inject, safety valve port, manometer mouth, reserve export, pressure change mouth, level gauge mouth, waste liquid export and drain all are equipped with the flange, and the erection joint of being convenient for, and it is tight good to connect.

Further, the runner is in a semi-cylindrical shape with a hollow inner part, and the design is easier to generate ammonia gas to drive the runner to rotate.

Further inject, the runner is fixed to be embedded in the rotation axis, and such design increases the atress degree of runner, extension runner life.

Further inject, L shape retaining ring is wear-resisting corrosion-resistant material L shape retaining ring, and such design lets L shape retaining ring be difficult for damaging because of rotatory and interior spacing ring friction, increases life, reduces economic cost.

Adopt the beneficial effects of the utility model:

the ammonia gas drives the rotating wheel, the rotating wheel drives the rotating shaft, and the rotating shaft drives the stirring blades to stir, so that the urea keeps moving constantly, is not easy to deposit, and is beneficial to the discharge of impurities;

2, the ammonia drives the rotating wheel, the rotating wheel drives the rotating shaft, and the rotating shaft drives the stirring blades to stir, so that the heating is quicker, the ammonia is generated more quickly, the production efficiency is improved, and the practicability is high;

3, the ammonia drives the runner, and the runner drives the rotation axis, and the rotation axis drives stirring vane and carries out the structural design that stirs, does not use any electric energy just can reach rotatory stirring's effect, and the energy saving reduces economic cost.

Drawings

The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic structural diagram I of an embodiment of a urea hydrolyzer of the present invention;

FIG. 2 is a schematic structural diagram II of an embodiment of the urea hydrolyzer of the present invention;

FIG. 3 is an enlarged view of FIG. 1 at A;

FIG. 4 is an enlarged view of FIG. 3 at B;

the main element symbols are as follows:

the device comprises a hydrolyzer shell 1, a safety valve port 2, a pressure gauge port 3, a standby outlet 4, a pressure change port 5, a liquid level meter port 6, a waste liquid outlet 7, a sewage discharge port 8, a urea solution inlet 9, supporting legs 10, a manhole 11, a hole cover 12, a handle 13, a heating port 14, a steam heater 15, a steam inlet 16, a steam condensate outlet 17, a switch handle 18, a demister installation port 19, a demister 20, an ammonia outlet 21, a supporting boss 22, an ammonia pipeline 23, a runner box 24, an air inlet hopper 25, an inner limiting ring 26, an outer limiting ring 27, an L-shaped retainer ring 28, a rotating bearing 29, a rotating shaft 30, a runner 31, stirring blades 32, a heating pipe group 33 and a gas-liquid separation net 34.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the urea hydrolyzer of the present invention comprises a hydrolyzer housing 1, a safety valve port 2, a pressure gauge port 3, a standby outlet 4, a pressure change port 5, a level gauge port 6, a waste liquid outlet 7, a sewage drain 8, a urea solution inlet 9 and four supporting legs 10 are arranged on the hydrolyzer housing 1, a manhole 11 is arranged on the hydrolyzer housing 1, the manhole 11 is hinged with a manhole cover 12, a handle 13 is connected on the manhole cover 12, a heating port 14 is arranged on the hydrolyzer housing 1, the heating port 14 is flange-connected with a steam heater 15, a steam inlet 16, a steam condensate outlet 17, a heating pipe group 33 and a switch handle 18 are arranged on the steam heater 15, a demister mounting port 19 is arranged on the hydrolyzer housing 1, the demister mounting port 19 is flange-connected with a demister 20, the demister 20 is connected with, gas-liquid separation net 34 has support boss 22, support boss 22 fixed mounting is on 19 inner walls of defroster installing port, defroster installing port 19 is connected with ammonia pipeline 23, ammonia pipeline 23 input is connected with runner box 24, be connected with two air intake fill 25 on the runner box 24, spacing ring 26 and outer spacing ring 27 in the runner box 24 fixedly connected with, L shape retaining ring 28 has been placed on the interior spacing ring 26, rolling bearing 29 has been placed between interior spacing ring 26 and the L shape retaining ring 28, L shape retaining ring 28 fixedly connected with rotation axis 30, rotation axis 30 is located one of runner box 24 and serves fixedly connected with runner 31, rotation axis 30 other end fixedly connected with stirring vane 32.

In the embodiment, when the urea hydrolyzer is used, firstly, the hydrolyzer shell 1 is placed and installed at a use position through the supporting legs 10, and then all accessories are respectively connected to the safety valve port 2, the pressure gauge port 3, the standby outlet 4, the pressure change port 5, the liquid level meter port 6, the waste liquid outlet 7, the drain outlet 8 and the urea solution inlet 9 on the hydrolyzer shell 1; then, urea is injected into the hydrolyzer shell 1 through a urea solution inlet 9 on the hydrolyzer shell 1, a steam heater 15 which is connected with a heating port 14 on the hydrolyzer shell 1 through a flange is started through a switch handle 18, the steam heater 15 starts to heat steam entering from a steam inlet 16 and then flushes the steam into a heating pipe group 33 arranged in the hydrolyzer shell 1, and after the heating pipe group 33 heats the urea, condensed water generated by cooling is discharged from a steam condensed water outlet 17; the urea is heated by the heating pipe set 33 to generate ammonia gas, the ammonia gas in the hydrolyzer shell 1 enters the runner box 24 from the air inlet hopper 25 under the action of a closed space and pressure, the ammonia gas also gives pressure to the runner 31 in the runner box 24 under the action of the pressure, the runner 31 is influenced by the stress to drive the rotating shaft 30 to rotate, the rotating shaft 30 drives the fixedly connected stirring blades 32 to stir the urea in the hydrolyzer shell 1, the urea keeps moving and is not easy to precipitate, the heating speed is increased, the ammonia gas also enters the ammonia gas pipeline 23 connected with the runner box 24 while driving the runner 31 to rotate, then the ammonia gas and the liquid are separated by the gas-liquid separation net 34 arranged on the demister 20, and then the ammonia gas enters the demister 20 for demisting, and is discharged from the ammonia gas outlet 21 for collection; in the operation process of the hydrolyzer shell 1, the liquid level and the internal pressure of urea in the hydrolyzer shell 1 can be observed in real time through the arranged liquid level meter port 6 and the pressure meter port 3, and if the pressure is too high, the urea can be adjusted through the safety valve port 2 and the pressure variable port 5; after the hydrolyzer shell 1 is used, the inside of the hydrolyzer shell 1 can be emptied through a sewage outlet 8 and a waste liquid outlet 7 which are arranged on the hydrolyzer shell 1; if the hydrolyzer shell 1 has a fault, the manhole cover 12 hinged on the manhole 11 is opened through the handle 13, and people can directly enter the inside of the hydrolyzer shell 1 through the manhole 11 for maintenance.

The preferred safe valve port 2, manometer mouth 3, reserve export 4, press and change mouth 5, level gauge mouth 6, waste liquid export 7 and drain 8 all are equipped with the flange, the erection joint of being convenient for, and connect closely nature well, and in fact, also can consider other connected modes according to particular case.

The runner 31 is preferably a semi-cylindrical shape with a hollow interior, so that ammonia gas generated more easily can drive the runner to rotate.

Preferably, the fixed position of runner 31 is embedded in the rotation axis, increases the atress degree of runner, extension runner life, and in fact, also can consider other modes of consolidating the connection according to particular case.

The L-shaped check ring 28 is preferably made of wear-resistant and corrosion-resistant materials, so that the L-shaped check ring is not easy to damage due to friction between rotation and the inner limiting ring, the service life is prolonged, the economic cost is reduced, and in fact, a cushion made of wear-resistant and corrosion-resistant materials can be added according to specific conditions.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. Urea hydrolyzer, including hydrolyzer casing (1), be equipped with safe valve port (2), manometer mouth (3), reserve export (4), pressure change mouth (5), level gauge mouth (6), waste liquid outlet (7), drain (8), urea solution import (9) and supporting legs (10) on hydrolyzer casing (1), be equipped with manhole (11) on hydrolyzer casing (1), manhole (11) articulate has handhole door (12), be connected with handle (13), its characterized in that on handhole door (12): the device is characterized in that a heating port (14) is arranged on the hydrolyzer shell (1), the heating port (14) is connected with a steam heater (15), a steam inlet (16), a steam condensate outlet (17), a heating pipe group (33) and a switch handle (18) are arranged on the steam heater (15), a demister mounting port (19) is arranged on the hydrolyzer shell (1), the demister mounting port (19) is connected with a demister (20), the demister (20) is connected with an ammonia outlet (21), a gas-liquid separation net (34) is arranged in the demister (20), a support boss (22) is arranged below the gas-liquid separation net (34), the support boss (22) is fixedly arranged on the inner wall of the demister mounting port (19), the demister mounting port (19) is connected with an ammonia pipeline (23), and the input end of the ammonia pipeline (23) is connected with a runner box (24), be connected with two air intake fill (25) on runner box (24), spacing ring (26) and outer spacing ring (27) in runner box (24) fixedly connected with, placed L shape retaining ring (28) on interior spacing ring (26), rolling bearing (29) have been placed between interior spacing ring (26) and L shape retaining ring (28), L shape retaining ring (28) fixedly connected with rotation axis (30), rotation axis (30) are located runner box (24) and serve fixedly connected with runner (31), rotation axis (30) other end fixedly connected with stirring vane (32).

2. The urea hydrolyzer as claimed in claim 1, wherein: the safety valve port (2), the pressure gauge port (3), the standby outlet (4), the pressure change port (5), the liquid level meter port (6), the waste liquid outlet (7) and the sewage outlet (8) are all provided with flanges.

3. The urea hydrolyzer as claimed in claim 2, wherein: the rotating wheel (31) is in a semi-cylindrical shape with a hollow interior.

4. The urea hydrolyzer as claimed in claim 3, wherein: the fixed position of the rotating wheel (31) is embedded in the rotating shaft.

5. The urea hydrolyzer as claimed in claim 4, wherein: the L-shaped check ring (28) is made of wear-resistant and corrosion-resistant materials.