CN213679945U

CN213679945U - Recycling device for primary backwater of aluminum oxide dissolution evaporation process

Info

Publication number: CN213679945U
Application number: CN202022112637.3U
Authority: CN
Inventors: 魏春林; 骆绍山; 余世慧; 周向东; 刘家寨; 李保伟; 裴俊明; 王耀兴; 姜云礼
Original assignee: Jingxi Tiangui Aluminum Co ltd
Current assignee: Jingxi Tiangui Aluminum Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-07-13
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a recycling device for primary backwater of an alumina dissolution evaporation process, which comprises a dissolution water return pipe, an evaporation water return pipe, a buffer water tank, a reverse osmosis water tank, a demineralized water tank, a gas station waste heat boiler water supply tank, a heat supply boiler deaerator and a heat supply boiler drain tank, wherein the dissolution water return pipe is communicated with the buffer water tank, the buffer water tank is communicated with the heat supply boiler deaerator, a first branch pipe and a second branch pipe are arranged on the dissolution water return pipe, the first branch pipe is communicated with a sewage treatment pool, the second branch pipe is communicated with the reverse osmosis water tank, and valves are arranged on the first branch pipe and the second branch pipe; the evaporation water return pipe is provided with a third branch pipe, a fourth branch pipe and a fifth branch pipe, and the third branch pipe is communicated to a water supply tank of the waste heat boiler of the gas station. The utility model discloses can effectively retrieve the primary return water and the waste heat of dissolving out evaporation process, reduce the steam consumption in the production, practice thrift the cost, reach energy-concerving and environment-protective effect.

Description

Recycling device for primary backwater of aluminum oxide dissolution evaporation process

Technical Field

The utility model relates to the technical field of alumina production, in particular to a recycling device for primary backwater of an alumina dissolution evaporation process.

Background

The primary backwater of the dissolution evaporation process in the production process of the aluminum oxide cannot reach the designed quality standard of the demineralized water and cannot be recycled to the demineralized water tank, after steam is stopped, the water quality is overproof for a long time and cannot be recycled after the dissolution casing is overhauled and washed every time, a large amount of water and heat carried by the water are lost when the water is discharged, the production cost is saved, the energy is saved, the environment is protected, and the major part of recovery and even the full recovery are realized by modification.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a device for recycling primary backwater of an alumina dissolution evaporation process, which can effectively recycle the primary backwater and the waste heat of the dissolution evaporation process, reduce the steam consumption in production, save the cost and achieve the effects of energy conservation and environmental protection.

The utility model adopts the technical proposal that: the recycling device comprises a dissolving-out water return pipe, an evaporating water return pipe, a buffer water tank, a reverse osmosis water tank, a desalting water tank, a gas station waste heat boiler water supply tank, a heat supply boiler deaerator and a heat supply boiler drain tank, wherein the dissolving-out water return pipe is communicated with the buffer water tank, the buffer water tank is communicated with the heat supply boiler deaerator, a first branch pipe and a second branch pipe are arranged on the dissolving-out water return pipe, the first branch pipe is communicated with a sewage treatment tank, the second branch pipe is communicated with the reverse osmosis water tank, and valves are arranged on the first branch pipe and the second branch pipe; the evaporation return water pipe on set up third branch pipe, fourth branch pipe and fifth branch pipe, the third branch pipe communicates to gas station exhaust-heat boiler feed tank, the fourth branch pipe sets up two sub-branch pipes, a sub-branch pipe communicates to the reverse osmosis water tank, the reverse osmosis water tank communicates to the demineralized water tank through desalination equipment, another sub-branch pipe communicates to the demineralized water tank, the fifth branch pipe communicates to the heat supply boiler drain tank, the heat supply boiler drain tank communicates to heat supply boiler oxygen-eliminating device, all set up the valve on two sub-branch pipes of third branch pipe, fourth branch pipe and the fifth branch pipe.

Preferably, the second branch pipe is provided with a heat exchanger for exchanging heat with raw water.

The utility model discloses the recycle device can carry out the recovery of multichannel to the return water of dissolving out evaporation technology according to the equipment condition in the aluminium oxide production process and collect for return water and waste heat energy effectively carry out recycle, have reduced the consumption of steam in the production, have practiced thrift the cost, reach energy-concerving and environment-protective effect.

Drawings

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

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1, the utility model relates to a recycle device of alumina dissolution evaporation process primary backwater, including dissolution backwater pipe, evaporation backwater pipe, buffer tank, reverse osmosis water tank, demineralized water tank, gas station exhaust-heat boiler feed tank, heat supply boiler deaerator and heat supply boiler drain tank, dissolution backwater pipe and buffer tank communicate, buffer tank and heat supply boiler deaerator communicate, set up first branch pipe and second branch pipe on dissolution backwater pipe, first branch pipe communicates to the sewage treatment pond, the second branch pipe communicates to reverse osmosis water tank, all set up the valve on first branch pipe and the second branch pipe; set up third branch pipe, fourth branch pipe and fifth branch pipe on the evaporation wet return, the third branch pipe communicates to gas station exhaust-heat boiler feed tank, the fourth branch pipe sets up two sub-branch pipes, a sub-branch pipe communicates to the reverse osmosis water tank, the reverse osmosis water tank communicates to the demineralized water tank through desalination equipment, another sub-branch pipe communicates to the demineralized water tank, the fifth branch pipe communicates to heat supply boiler drain tank, heat supply boiler drain tank communicates to heat supply boiler oxygen-eliminating device, all set up the valve on two sub-branch pipes of third branch pipe, fourth branch pipe and the fifth branch pipe.

The utility model discloses when concrete implementation, the flow of each pipeline water-feeding is carried the realization through the water pump, and the water pump does not draw in the drawing, be provided with on the second branch pipe with the heat exchanger of raw water heat transfer, but the raw water solution raw water temperature of winter heating leads to the system water yield decline problem low, and this part is dissolved out the return water and is retrieved to the reverse osmosis water tank behind the heat exchanger and again through mixed bed desalination recovery water and surplus heat.

The utility model discloses can carry out the recovery of multichannel to the return water of dissolving out evaporation technology according to the equipment condition in the aluminium oxide production process and collect for return water and waste heat energy effectively carry out recycle, have reduced the consumption of steam in the production, have practiced thrift the cost, reach energy-concerving and environment-protective effect.

The technical solutions in the embodiments of the present invention have been clearly and completely described above, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments, and the present invention should not be construed as being limited thereto. Based on the utility model discloses deformation, change and substitution under the design all belong to the utility model discloses a protection scope.

Claims

1. A recycling device for primary backwater in an alumina dissolution evaporation process is characterized in that: the system comprises a dissolution water return pipe, an evaporation water return pipe, a buffer water tank, a reverse osmosis water tank, a desalting water tank, a gas station waste heat boiler water supply tank, a heat supply boiler deaerator and a heat supply boiler drain tank, wherein the dissolution water return pipe is communicated with the buffer water tank, the buffer water tank is communicated with the heat supply boiler deaerator, the dissolution water return pipe is provided with a first branch pipe and a second branch pipe, the first branch pipe is communicated to a sewage treatment pool, the second branch pipe is communicated to the reverse osmosis water tank, and valves are arranged on the first branch pipe and the second branch pipe; the evaporation return water pipe on set up third branch pipe, fourth branch pipe and fifth branch pipe, the third branch pipe communicates to gas station exhaust-heat boiler feed tank, the fourth branch pipe sets up two sub-branch pipes, a sub-branch pipe communicates to the reverse osmosis water tank, the reverse osmosis water tank communicates to the demineralized water tank through desalination equipment, another sub-branch pipe communicates to the demineralized water tank, the fifth branch pipe communicates to the heat supply boiler drain tank, the heat supply boiler drain tank communicates to heat supply boiler oxygen-eliminating device, all set up the valve on two sub-branch pipes of third branch pipe, fourth branch pipe and the fifth branch pipe.

2. The recycling apparatus according to claim 1, wherein: and a heat exchanger for exchanging heat with the raw water is arranged on the second branch pipe.