CN211626029U

CN211626029U - Energy-efficient magnesium carbonate static drying device

Info

Publication number: CN211626029U
Application number: CN201922374976.6U
Authority: CN
Inventors: 尹全义; 邢煊; 翟立强; 孙孟勇
Original assignee: Hebei Xingtai Metallurgical Magnesium Industry Co ltd; Hebei Meishen Technology Co ltd
Current assignee: Hebei Xingtai Metallurgical Magnesium Industry Co ltd; Hebei Meishen Technology Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-10-02
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a high-efficiency energy-saving magnesium carbonate static drying device, relating to the technical field of chemical drying; the lower end of a heat source is connected with one end of a heat source circulator through a pipeline, the other end of the heat source circulator is respectively connected with regulating valves on a plurality of drying chambers through pipelines, the upper end of each drying chamber is provided with a moisture exhaust port, the moisture exhaust port is connected with an axial flow fan/induced draft fan through a pipeline, the axial flow fan/induced draft fan is connected with a No. 1 port of a heat recoverer through a pipeline, a No. 4 port of the heat recoverer is connected with the heat source through a pipeline, a No. 2 port of the heat recoverer is provided with a condensed water collecting device, a pipeline switching valve is respectively connected with a No. 2 port, a No. 3 port and an evacuation port of the heat recoverer through pipelines; the utility model can realize the collection and the cyclic utilization of heat, improve the heat utilization rate, effectively reduce the energy consumption, shorten the drying time and improve the drying efficiency; can realize accurate control and has good process repeatability.

Description

Energy-efficient magnesium carbonate static drying device

Technical Field

The utility model belongs to the technical field of the chemical industry is dry, concretely relates to energy-efficient magnesium carbonate static drying device.

Background

In chemical production, a lot of products relate to drying procedures, wherein the used static drying equipment has high energy consumption and low efficiency and is not adopted gradually, and static drying is needed for drying products in a specific shape, so that the problem is solved, and the invention provides the efficient and energy-saving static drying device.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that in the existing chemical production, a plurality of products relate to a drying procedure, and the used static drying equipment has large energy consumption and low efficiency; an object of the utility model is to provide an energy-efficient magnesium carbonate static drying device.

The utility model discloses a high-efficiency energy-saving magnesium carbonate static drying device, which comprises a heat recoverer, a drying chamber, a forced convection fan, a moisture discharging port, a regulating valve, a heat source circulator, an axial flow fan/draught fan, a filter, a pipeline change-over valve and a condensed water collecting device; the lower end of a heat source is connected with one end of a heat source circulator through a pipeline, the other end of the heat source circulator is connected with regulating valves on a plurality of drying chambers through pipelines respectively, a moisture exhaust port is arranged at the upper end of each drying chamber and is connected with an axial flow fan/induced draft fan through a pipeline, the axial flow fan/induced draft fan is connected with a No. 1 port of a heat recoverer through a pipeline, a No. 4 port of the heat recoverer is connected with the heat source through a pipeline, a No. 2 port of the heat recoverer is provided with a condensed water collecting device, a pipeline switching valve is connected with a No. 2 port, a No. 3 port and an evacuation port of the heat recoverer through pipelines respectively, and the No.

Preferably, the number of the forced convection fans on the drying chamber is 2-6.

Preferably, 2-4 moisture-discharging openings are uniformly distributed on the drying part.

Preferably, the heat recoverer is a tube heat exchanger/a plate heat exchanger.

Preferably, a pipeline switching valve is installed on the heat recoverer.

Compared with the prior art, the beneficial effects of the utility model are that:

the heat can be collected and recycled, the utilization rate of the heat is improved, and the energy consumption is effectively reduced;

secondly, the drying time is shortened and the drying efficiency is improved through the collection and the cyclic utilization of heat;

and thirdly, automatic and accurate control can be realized, the process repeatability is good, and the production stability is high.

Drawings

For ease of illustration, the invention is described in detail by the following detailed description and accompanying drawings.

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

In the figure: 1-a heat recovery device; 2-a drying chamber; 3-forced convection fan; 4-a moisture removal port; 5-adjusting the valve; 6-a heat source; 7-a heat source circulator; 8-axial flow fan/draught fan; 9-a filter; 10-pipe changeover valve; 11-a condensate water collecting device; 12-control system.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and/or process steps that are closely related to the solution according to the invention are shown in the drawings, while other details that are not relevant to the invention are omitted.

As shown in fig. 1, the following technical solutions are adopted in the present embodiment: the device comprises a heat recoverer 1, a drying chamber 2, a forced convection fan 3, a moisture exhaust port 4, a regulating valve 5, a heat source 6, a heat source circulator 7, an axial flow fan/draught fan 8, a filter 9, a pipeline switching valve 10, a condensed water collecting device 11 and a control system 12; the lower end of a heat source 6 is connected with one end of a heat source circulator 7 through a pipeline, the other end of the heat source circulator 7 is respectively connected with a regulating valve 5 on a plurality of drying chambers 2 through a pipeline, a moisture exhaust port 4 is arranged at the upper end of each drying chamber 2, the moisture exhaust port 4 is connected with an axial flow fan/induced draft fan 8 through a pipeline, the axial flow fan/induced draft fan 8 is connected with a port 1 of a heat recoverer 1 through a pipeline, a port 4 of the heat recoverer 1 is connected with the heat source 6 through a pipeline, a port 2 of the heat recoverer 1 is provided with a condensate water collecting device 11, a pipeline switching valve 10 is respectively connected with the port 2, the port 3 and an exhaust port of the heat recoverer 1 through pipelines, the other end of a filter 9 and the port 3 of the pipeline switching valve 10 are both connected with pipelines.

Furthermore, the number of the forced convection fans 3 on the drying chamber 2 is 2-6.

Furthermore, 2-4 moisture exhaust openings are uniformly distributed on the drying chamber 2.

Further, the heat recoverer 1 is a tubular heat exchanger/a plate heat exchanger.

Further, a pipeline switching valve is installed on the heat recoverer.

The working principle of the specific embodiment is as follows: when the drying device is used, the heat circulating body and the convection fan are started, the heat source is started, and under the action of the convection fan on the drying chamber, heat used for drying enters the drying chamber at a certain pressure to heat materials. The other end of the convection fan sucks air with steam from the other side of the drying box at a certain negative pressure, one part of the air is discharged through a moisture discharging port on the drying chamber and enters a heat recovery system, and the other part of the air returns to the drying chamber to continue heating the materials, and the air is circulated and reciprocated until the materials are dried; the hot air containing water vapor entering the heat recovery system through the moisture exhaust port enters the port 1 of the tubular heat exchanger under the driving of the fan on the circulating system. In the early stage and the later stage of drying, after heat transfer and moisture condensation, the air enters the port No. 3 from the port No. 2 and the filtered air as a heat transfer medium, enters the boiler from the port No. 4, returns to the boiler again, is heated again and enters the heat circulation system; in the middle stage of drying, a valve between the 3# port and the 2# port is closed, so that water vapor and hot air entering the circulating system are exhausted after passing through the heat exchanger, and only the filtered air is allowed to enter the heat exchanger from the 3# port to finish heat transfer and then enters the heat source from the 4# port.

The advantages of this embodiment are:

1. the drying chambers use one heat source, the heat of the moisture discharging port can be recovered and used for drying again, the drying energy consumption is greatly reduced, the energy consumption can be reduced by 15-35% compared with the prior art, the drying time is shortened, and the drying efficiency is improved.

2. Through the use of pipeline conversion valve, in earlier stage and later stage, carry out the utilization for the third time to the hot-air after the heat transfer dehumidification, improved heat source utilization rate, further reduced the stoving energy consumption.

3. The heat source related by the invention is hot air or heated steam and heat conducting oil, so that the pollution of impurities generated by flame combustion to the product is avoided;

4. 2-6 forced convection fans are uniformly distributed on each drying chamber, so that the temperature in the drying chambers is uniform and the drying is consistent;

5. 2-4 moisture discharging openings are uniformly distributed on each drying chamber, and the moisture discharging speed is regulated and controlled and the drying consistency of each drying box is adjusted by adjusting the size of each moisture discharging opening;

6. the heat circulation system is provided with an adjusting valve on each drying chamber, so that on one hand, the heat in the drying chambers can be uniformly distributed, and on the other hand, the heat distribution among the drying chambers can be adjusted through the adjusting valves, and further, the drying consistency of materials in the drying chambers is adjusted;

7. after passing through the heat exchanger, a part of water vapor is condensed and discharged, and the collected water vapor can be reused in the production process, so that the water is recycled and saved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a static drying device of energy-efficient magnesium carbonate which characterized in that: the device comprises a heat recoverer, a drying chamber, a forced convection fan, a moisture discharge port, a regulating valve, a heat source circulator, an axial flow fan/induced draft fan, a filter, a pipeline conversion valve and a condensed water collecting device; the lower end of a heat source is connected with one end of a heat source circulator through a pipeline, the other end of the heat source circulator is connected with regulating valves on a plurality of drying chambers through pipelines respectively, a moisture exhaust port is arranged at the upper end of each drying chamber and is connected with an axial flow fan/induced draft fan through a pipeline, the axial flow fan/induced draft fan is connected with a No. 1 port of a heat recoverer through a pipeline, a No. 4 port of the heat recoverer is connected with the heat source through a pipeline, a No. 2 port of the heat recoverer is provided with a condensed water collecting device, a pipeline switching valve is connected with a No. 2 port, a No. 3 port and an evacuation port of the heat recoverer through pipelines respectively, and the No.

2. The high-efficiency energy-saving magnesium carbonate static drying device according to claim 1, characterized in that: the forced convection fans on the drying chamber are 2-6.

3. The high-efficiency energy-saving magnesium carbonate static drying device according to claim 1, characterized in that: 2-4 moisture-discharging openings are uniformly distributed on the drying chamber.

4. The high-efficiency energy-saving magnesium carbonate static drying device according to claim 1, characterized in that: the heat recoverer is a tubular heat exchanger/a plate heat exchanger.

5. The efficient and energy-saving magnesium carbonate static drying device as claimed in claim 1, is characterized in that: and a pipeline switching valve is arranged on the heat recoverer.