CN202221163U

CN202221163U - Preheating device of boiler water

Info

Publication number: CN202221163U
Application number: CN2011203063856U
Authority: CN
Inventors: 邱丁坤; 章黎军; 姚方
Original assignee: SUZHOU CHANGLE BUBBLE AND PLASTICS CO Ltd
Current assignee: SUZHOU CHANGLE BUBBLE AND PLASTICS CO Ltd
Priority date: 2011-08-22
Filing date: 2011-08-22
Publication date: 2012-05-16
Anticipated expiration: 2021-08-22

Abstract

The utility model relates to a preheating device of boiler water. The preheating device of the boiler water includes a water tank, and a water inlet pipe and a water outlet pipe correspondingly arranged on two sides of the water tank. The two sides of the water tank are also provided with a smoke inlet pipe and a smoke outlet pipe correspondingly. The smoke inlet pipe communicates with the smoke outlet pipe through a plurality of shunt pipes penetrating through the water tank. The preheating device of the boiler water in the utility model utilizes heat of smoke for pre-heating water, thereby reducing load of waste heat processing. The smoke exchanges heat with water in the water tank through the shunt pipes. The heat exchange area is large, and the waste heat escape volume of the smoke is small. The heat utilization rate is high. The water temperature can achieve to 70 DEG C and above through pre-heating, thereby saving energy substantially.

Description

The boiler feed water preheating device

Technical field

The utility model relates to a kind of boiler feed water preheating device.

Background technology

Expandable polystyrene (EPS) is produced and to be adopted intermittently operated usually, with styrene, pure water and auxiliary material in the agitated reactor that has the jacket steam coil pipe after operations such as low temperature polymerization, aeration, high temperature polymerization, make EPS.Required hot water need burn heat with cold water in advance by boiler in the preparation process, and the cold water initial temperature is low, so that this operation power consumption is bigger; And the boiler flue gas that produces in the process of heating up water contains more dust, need under air-introduced machine drives, deliver to chimney, after the water curtain dedusting, can discharge.

Problem is, flue gas has higher temperature, and this part used heat is directly handled discharge, has not only increased the processing burden, has also wasted the heat of being with.Also have the people that economizer is set in flue at present, like cast iron gilled tube economizer, cold water flows in the economizer tube; Flue gas is outer at pipe, when flowing in the flue and the cold water heat exchange, yet, owing to considerable part heat in the flue gas can directly shed through flue; Flue gas flow velocity outside pipe is often very fast, and flue gas and cold water heat exchange area are limited, and water only can be heated to 30-40 degree centigrade; Water temperature is not high enough, in boiler, still need absorb more heat transfer.

Summary of the invention

The technical problem that the utility model solves is, a kind of boiler feed water preheating device is provided, and flue gas heat is used for preheating water, and heat exchange area is big, and heat utilization ratio is high, has also alleviated used heat and has handled load.

The technical scheme that the utility model adopts is:

A kind of boiler feed water preheating device comprises water tank and corresponding water inlet pipe, the outlet pipe that is arranged on the water tank both sides, and said water tank both sides also correspondence are provided with flue gas and go into pipe and go out pipe with flue gas, and flue gas is gone into pipe and gone out to manage with flue gas through the some isocons that run through water tank and be communicated with.

Further, said water tank also is provided with heat-insulation layer outward.

Further, said flue gas is gone into the opposite side that pipe is arranged on water inlet pipe on the water tank.

The beneficial effect of the utility model is:

The utility model has alleviated used heat and has handled load through flue gas heat is used for preheating water; Flue gas through isocon in water tank with the water heat exchange, heat exchange area is big, fume waste heat is overflowed few, heat utilization ratio is high, through preheating, water temperature can reach more than 70 degrees centigrade, has practiced thrift the energy greatly.

Description of drawings

Fig. 1 is the structural representation of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Embodiment:

Shown in accompanying drawing; The boiler feed water preheating device; Comprise water tank 4 and corresponding water inlet pipe 22, the outlet pipe 21 that is arranged on the water tank both sides; Said water tank 4 both sides also correspondence are provided with flue gas and go into pipe 11 and go out pipe 12 with flue gas, and the isocon 5 that flue gas is gone into the some parallel connections of pipe 11 through running through water tank 4 goes out to manage 12 with flue gas and is communicated with.

Further, also be provided with heat-insulation layer 3 outside the said water tank 4, like the rock wool heat-preservation layer.

Further, said flue gas is gone into the opposite side that pipe 11 is arranged on water inlet pipe 22 on the water tank 4.

During use, water gets into the water tank 4 from water inlet pipe 22 in advance, is full of water tank 4, and then, flue gas is gone into pipe 11 opposite sides from water inlet pipe 22, fed fume waste heat against water (flow) direction, then through flowing out after cellular densely covered isocon 5 and the water heat exchange.

Because the flue gas water tank inside of flowing through, flue gas can be fully and the water heat exchange, and used heat is seldom overflowed from heat-exchange system, heat-insulation layer is set outside water tank further reduced heat and from whole heat-exchange system, overflow; Isocon is cellular to gather, and has increased the heat exchange area with water, and heat utilization ratio is high; The counterflow exchange of flue gas and water is with the efficient and the effect that have further guaranteed heat exchange.After heat exchange, water temperature can reach more than 70 degrees centigrade, has practiced thrift the energy greatly.

Claims

1. boiler feed water preheating device comprises water tank and corresponding water inlet pipe, the outlet pipe that is arranged on the water tank both sides, and said water tank both sides also correspondence are provided with flue gas and go into pipe and go out pipe with flue gas, and flue gas is gone into pipe and gone out to manage with flue gas through the some isocons that run through water tank and be communicated with.

2. boiler feed water preheating device as claimed in claim 1 is characterized in that said water tank also is provided with heat-insulation layer outward.

3. boiler feed water preheating device as claimed in claim 1 is characterized in that said flue gas goes into the opposite side that pipe is arranged on water inlet pipe on the water tank.