CN213803471U - Steam type lithium bromide heat pump low-temperature belt type drier - Google Patents

Abstract

The utility model relates to a steam type lithium bromide heat pump low-temperature belt type drier, which comprises a drier main body, a precooler, a condenser and a preheater; a hot water outlet of the heat pump sequentially comprises a heater, a preheater, a hot water buffer tank and a hot water inlet of the heat pump through pipelines to jointly form a hot water loop of the heat pump; a cold water outlet of the heat pump sequentially comprises a condenser, a cold water buffer tank and a cold water inlet of the heat pump through pipelines to jointly form a cold water loop of the heat pump; the precooler is respectively connected with a cooling circulation water supply pipeline and a cooling circulation water return pipeline; the heat pump is a steam type lithium bromide heat pump and is also provided with a steam inlet and a steam condensate outlet; the steam inlet of the heat pump is connected with a steam pipeline; the steam condensate outlet of the heat pump is connected with the hot water outlet of the heat pump through a pipeline to form a heat circulation loop; the cooling circulation water return pipeline is connected with a cold water inlet of the heat pump through a pipeline to form a cold circulation loop.

Description

Steam type lithium bromide heat pump low-temperature belt type drier

Technical Field

The utility model relates to a mummification machine, concretely relates to steam type lithium bromide heat pump low temperature belt mummification machine.

Background

Along with the acceleration of the urbanization process, the rapid development of industrial production, the increase of urban population, the increasing of discharge amount of urban industrial wastewater and domestic sewage, the annual improvement of the treatment rate of urban sewage, the rapid increase of sludge output of urban sewage treatment plants, the discharge of a large amount of excess sludge by the sewage treatment plants, the further treatment of sludge with huge amount, if the sludge can not be reasonably treated, the secondary pollution is caused, in the sludge treatment process, the sludge drying treatment is the primary task in the sludge treatment, the sludge drying is the process of removing most of water content from the sludge through the functions of percolation or evaporation and the like, the sludge drying is needed, firstly, the sludge output of the sewage treatment plants is large, the sludge volume is required to be reduced, the subsequent transportation and the treatment are convenient, secondly, the domestic treatment of the sludge is carried to the landfill, the volume can be reduced, the space can be saved for landfill, and the sludge can be dried to be used as fertilizer and building materials after being treated.

The sludge drying in the prior art has the following problems: in the prior art, the sludge drying treatment mostly adopts thermal evaporation drying treatment, and dry hot air is adopted to carry out hot air circulation drying on sludge, but wet air after drying sludge contains a large amount of waste heat, and the waste heat is directly discharged outdoors and is not reused, so that the resource waste is caused, and the cost of the sludge drying treatment is increased.

Disclosure of Invention

The utility model provides a steam type lithium bromide heat pump low temperature belt drier:

a low-temperature belt type drier of a steam type lithium bromide heat pump comprises a drier main body, a precooler, a condenser and a preheater, wherein a heater is arranged in the drier main body, and the drier main body, the precooler, the condenser and the preheater are connected in sequence through air pipes to form a circulating air loop; a hot water outlet of the heat pump is connected with a heater through a pipeline, the heater is connected with a preheater through a pipeline, the preheater is connected with a hot water cache tank through a pipeline, and the hot water cache tank is connected with a hot water inlet of the heat pump through a pipeline to jointly form a heat supply loop of the heat pump; a cold water outlet of the heat pump is connected with a condenser through a pipeline, the condenser is connected with a cold water cache tank through a pipeline, and the cold water cache tank is connected with a cold water inlet of the heat pump through a pipeline to jointly form a cold water loop of the heat pump; the precooler is respectively connected with a cooling circulation water supply pipeline and a cooling circulation water return pipeline; the heat pump is a steam type lithium bromide heat pump and is also provided with a steam inlet and a steam condensate outlet; and a steam inlet of the heat pump is connected with a steam pipeline.

And a steam condensate outlet of the heat pump is connected with a hot water outlet of the heat pump through a pipeline to form a heat circulation loop.

The cooling circulation water return pipeline is connected with a cold water inlet of the heat pump through a pipeline to form a cold circulation loop.

The precooler, the condenser, the preheater and the heater are all plate heat exchangers.

The utility model has the advantages that the design is reasonable, the structure is simple, the lithium bromide heat pump is applied to the drier, the steam is used as the drive to generate cold water and hot water, and the heat source and the cooling are provided for each heat exchanger; the steam condensate water generated by the lithium bromide heat pump is directly discharged in the past, has higher temperature of about 90 ℃, and can be completely used as a heat source, so that a heat circulation loop is constructed, and the heat is fully utilized; in addition, the temperature of the cooling water after passing through the precooler is about 40 ℃, and the cooling water completely meets the condition of cold water sent into the lithium bromide heat pump, so that a cold circulation loop is constructed; the heat at each position in the full drying system is higher in heat utilization rate, and compared with the method of simply adopting a lithium bromide heat pump to replace the existing electric heat pump, the consumption of steam is greatly reduced.

Drawings

Fig. 1 is a connection schematic diagram of a low-temperature belt type drying machine of a steam type lithium bromide heat pump.

In the figure, a drying machine main body 1, a precooler 2, a condenser 3, a preheater 4, a heater 5, a heat pump 6, a hot water buffer tank 7, a cold water buffer tank 8, a cooling circulation water feeding pipeline 9, a cooling circulation water return pipeline 10, a steam pipeline 11, a heat circulation loop 12 and a cold circulation loop 13.

Detailed Description

2. As shown in the figure, the low-temperature belt type drier of the steam type lithium bromide heat pump comprises a drier main body 1, a precooler 2, a condenser 3 and a preheater 4, wherein a heater 5 is installed in the drier main body 1, and the drier main body 1, the precooler 2, the condenser 3 and the preheater 4 are connected in sequence through air pipes to form a circulating air loop; a hot water outlet of the heat pump 6 is connected with a heater 5 through a pipeline, the heater 5 is connected with a preheater 4 through a pipeline, the preheater 4 is connected with a hot water buffer tank 7 through a pipeline, and the hot water buffer tank 7 is connected with a hot water inlet of the heat pump 6 through a pipeline to jointly form a heat pump heat supply loop; a cold water outlet of the heat pump 6 is connected with the condenser 3 through a pipeline, the condenser 3 is connected with a cold water cache tank 8 through a pipeline, and the cold water cache tank 8 is connected with a cold water inlet of the heat pump 6 through a pipeline to jointly form a cold water loop of the heat pump; the precooler 2 is respectively connected with a cooling circulating water supply pipeline 9 and a cooling circulating water return pipeline 10; the heat pump 6 is a steam type lithium bromide heat pump, and is also provided with a steam inlet and a steam condensate outlet; the steam inlet of the heat pump 6 is connected with a steam pipeline 11; the steam condensate outlet of the heat pump 6 is connected with the hot water outlet of the heat pump 6 through a pipeline to form a heat circulation loop 12; the cooling circulation water return pipeline 10 is connected with a cold water inlet of the heat pump 6 through a pipeline to form a cooling circulation loop 13, and the precooler 2, the condenser 3, the preheater 4 and the heater 5 are plate heat exchangers.

Because of the limited character expression, there exists an infinite concrete structure objectively, for those skilled in the art, without departing from the principle of the present invention, a plurality of improvements, decorations or changes can be made, and the above technical features can be combined in a proper way; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims (2)

1. A low-temperature belt type drier of a steam type lithium bromide heat pump comprises a drier main body, a precooler, a condenser and a preheater, wherein a heater is arranged in the drier main body, and the drier main body, the precooler, the condenser and the preheater are connected in sequence through air pipes to form a circulating air loop; a hot water outlet of the heat pump is connected with a heater through a pipeline, the heater is connected with a preheater through a pipeline, the preheater is connected with a hot water cache tank through a pipeline, and the hot water cache tank is connected with a hot water inlet of the heat pump through a pipeline to jointly form a heat supply loop of the heat pump; a cold water outlet of the heat pump is connected with a condenser through a pipeline, the condenser is connected with a cold water cache tank through a pipeline, and the cold water cache tank is connected with a cold water inlet of the heat pump through a pipeline to jointly form a cold water loop of the heat pump; the precooler is respectively connected with a cooling circulation water supply pipeline and a cooling circulation water return pipeline; the heat pump is characterized in that the heat pump is a steam type lithium bromide heat pump, and is also provided with a steam inlet and a steam condensate outlet; the steam inlet of the heat pump is connected with a steam pipeline;

the steam condensate outlet of the heat pump is connected with the hot water outlet of the heat pump through a pipeline to form a heat circulation loop;

the cooling circulation water return pipeline is connected with a cold water inlet of the heat pump through a pipeline to form a cold circulation loop.

2. The steam type lithium bromide heat pump low-temperature belt drier according to claim 1, wherein the precooler, the condenser, the preheater and the heater are plate heat exchangers.

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