CN211190085U

CN211190085U - Granulation tower with return water circulating system

Info

Publication number: CN211190085U
Application number: CN201922097349.2U
Authority: CN
Inventors: 曾晓斌
Original assignee: Xinyangfeng Agricultural Science And Technology Co ltd
Current assignee: Xinyangfeng Agricultural Science And Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-07
Anticipated expiration: 2029-11-29

Abstract

The utility model provides a take granulation tower of return water circulation system, a set of axial fan (6) annular array is in melting casing (3) top, open tower body (1) lower part has a set of air inlet, tower body (1) top is equipped with top cap (7), top cap (7) comprise upper and lower two-layer grid plate that stagger each other, and be equipped with airflow channel between upper and lower two-layer grid plate, each grid strip of grid plate is the V-arrangement strip that the middle height both ends are low respectively, two grid plate bottoms are equipped with round water catch bowl (8) respectively, the end of giving vent to anger of steam coil pipe (5) and the outlet of two water catch bowls (8) communicate with each other with return water collecting box (2. The utility model has the advantages that: simple structure is reasonable, and the high-pressure pump's use is saved to being used for other production lines to supply water again after collecting the return water through granulation tower high-order, retrieves the steam that the granulation produced simultaneously, very big reduction manufacturing cost.

Description

Granulation tower with return water circulating system

Technical Field

The utility model relates to a compound fertilizer granulation technical field, concretely relates to take granulation tower of return water circulation system.

Background

At present, most of backwater generated in the granulating process of a prilling tower of the urea-based compound fertilizer is intensively discharged into a storage tank at the bottom of the tower for storage, then the backwater is conveyed to a sulfuric acid regeneration line through a pressure pump to supply water to the urea-based compound fertilizer, the backwater recycling is realized, when the pressure pump is opened for a long time, a large amount of electric energy is consumed every month, and meanwhile, water vapor generated in the granulating process is directly discharged, so that great waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at present, the return water that urea-based compound fertilizer produced at the in-process of prilling tower granulation is mostly concentrated and is discharged the storage in the holding vessel at the bottom of the tower, then the rethread force (forcing) pump carries the return water sulfuric acid regeneration line to it and supplies water, realize return water cyclic utilization, when the force (forcing) pump is opened for a long time, every month will consume a large amount of electric energy, the vapor direct discharge that produces in the granulation process simultaneously causes very big waste not enough, and provide a prilling tower of taking return water circulation system.

The utility model discloses a tower body, install the prilling granulator on tower body upper portion, be located the exhaust apparatus of prilling granulator top and be located the return water collecting box of prilling granulator below, prilling apparatus include the melting casing and with the communicating granulation shower nozzle of melting casing discharge gate, be equipped with steam coil in the melting casing, exhaust apparatus comprises a set of axial fan, a set of axial fan ring array is in melting casing top, open the tower body lower part has a set of air inlet, the tower body top is equipped with the top cap, the top cap comprises upper and lower two-layer grid plate that staggers each other, and be equipped with airflow channel between the upper and lower two-layer grid plate, each grid strip of grid plate is the V-arrangement strip that the high both ends in the middle of the difference are low, two grid plate bottoms are equipped with the round catch bowl respectively.

The exhaust ports of the axial flow fans are respectively inclined upwards and face the middle part of the grid plate V-shaped strip.

Each V-shaped strip of the grid plate is a hollow tube, two ends of the hollow tube are provided with openings, and the tower body is provided with two groups of airflow through holes which are respectively communicated with the V-shaped strips.

One side of the backwater collecting box is provided with a water outlet, a ball float valve is arranged on the water outlet, and the air outlet end of the steam coil pipe is positioned in the backwater collecting box and below the water outlet of the backwater collecting box.

The utility model has the advantages that: simple structure is reasonable, and the high-pressure pump's use is saved to being used for other production lines to supply water again after collecting the return water through granulation tower high-order, retrieves the steam that the granulation produced simultaneously, very big reduction manufacturing cost.

Description of the drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the side view structure of the top cover of the present invention.

Detailed Description

As shown in the attached drawing, the utility model comprises a tower body 1, a granulating device arranged on the upper part of the tower body 1, an exhaust device arranged above the granulating device and a backwater collecting box 2 arranged below the granulating device, wherein the granulating device comprises a melting shell 3 and a granulating nozzle 4 communicated with a discharge port of the melting shell 3, a steam coil pipe 5 is arranged in the melting shell 3, the exhaust device is composed of a group of axial flow fans 6, a group of axial flow fans 6 are annularly arrayed above the melting shell 3, a group of air inlets are arranged on the lower part of the tower body 1, a top cover 7 is arranged on the top of the tower body 1, the top cover 7 is composed of an, an airflow channel is arranged between the upper grid plate and the lower grid plate, each grid strip of the grid plates is a V-shaped strip with a high middle and two low ends, the bottoms of the two grid plates are respectively provided with a circle of water collecting grooves 8, and the air outlet end of the steam coil pipe 5 and the water outlets of the two water collecting grooves 8 are respectively communicated with the backwater collecting box 2.

The exhaust ports of the axial flow fans 6 are respectively inclined upwards and face the middle part of the grid plate V-shaped strip.

Each V-shaped strip of the grid plate is a hollow tube, two ends of the hollow tube are provided with openings, and the tower body 1 is provided with two groups of airflow through holes which are respectively communicated with the V-shaped strips.

A water outlet is arranged on one side of the backwater collecting box 2, a ball float valve is arranged on the water outlet, and the air outlet end of the steam coil pipe 5 is positioned in the backwater collecting box 2 and below the water outlet of the backwater collecting box 2.

The working mode and principle are as follows: the compound fertilizer mixed slurry is conveyed into a melting shell 3 through a lifter and then is sprayed out through a granulating nozzle 4, the granular slurry is pre-cooled into solid particles in the falling process, the slurry of the melting shell 3 and steam generated in the granulating process are discharged from the top of a tower body 1 through a group of axial flow fans 6, the steam is pre-cooled into water when meeting a top cover 7, each grid strip of a grid plate is a V-shaped strip with a high middle part and two low ends, condensed water flows into a water collecting tank 8 from two ends conveniently, the water drops into the water collecting tank 8 and then is discharged into a water return collecting tank 2 for collection, the V-shaped strips are hollow tubes, air flow outside the tower body 1 can cool the V-shaped strips through the hollow tubes, the top cover 7 is composed of upper and lower layers of grid plates which are staggered with each other, a gap is reserved between the upper and lower layers of grid plates, gas discharge is facilitated, and the steam in the tower body, raindrops outside the tower body 1 can be blocked by the two layers of grid plates and cannot directly fall into the tower body 1. The end of giving vent to anger of steam coil pipe 5 is located the outlet below in return water collecting box 2, and the end of giving vent to anger of steam coil pipe 5 is located the water level below of return water collecting box 2 all the time promptly, can increase steam coil pipe 5's the end pressure of giving vent to anger, improves the utilization ratio of steam, avoids unnecessary steam directly to discharge simultaneously.

Claims

1. A granulation tower with a return water circulation system is characterized by comprising a tower body (1), a granulation device arranged on the upper portion of the tower body (1), an exhaust device positioned above the granulation device and a return water collecting box (2) positioned below the granulation device, wherein the granulation device comprises a melting shell (3) and a granulation nozzle (4) communicated with a discharge port of the melting shell (3), a steam coil pipe (5) is arranged in the melting shell (3), the exhaust device consists of a group of axial flow fans (6), the group of axial flow fans (6) are annularly arrayed above the melting shell (3), a group of air inlets are formed in the lower portion of the tower body (1), a top cover (7) is arranged at the top of the tower body (1), the top cover (7) consists of an upper layer and a lower layer of grid plates which are staggered with each other, an air flow channel is arranged between the upper layer and the lower layer of grid plates, the bottoms of the two grid plates are respectively provided with a circle of water collecting grooves (8), and the air outlet end of the steam coil pipe (5) and the water outlets of the two water collecting grooves (8) are respectively communicated with the backwater collecting box (2).

2. The prilling tower with a return water circulation system according to claim 1, wherein the exhaust ports of the axial fans (6) are respectively inclined upward and toward the middle of the grid plate V-shaped strips.

3. The prilling tower with a return water circulation system as claimed in claim 1, wherein each V-shaped strip of the grid plate is a hollow tube, both ends of the hollow tube are open, and the tower body (1) is provided with two groups of air flow through holes respectively communicated with the V-shaped strips.

4. The granulation tower with the backwater circulation system as claimed in claim 1, wherein a water outlet is provided at one side of the backwater collecting tank (2), a ball float valve is provided on the water outlet, and the air outlet end of the steam coil (5) is located in the backwater collecting tank (2) and below the water outlet of the backwater collecting tank (2).