CN204372879U - A kind of two medium waste heat boiler - Google Patents

Abstract

The utility model provides a dual-medium waste heat boiler, which not only provides superheated steam for industrial production but also hot water for heating at the same time, thereby effectively reducing boiler purchase and operating costs, and greatly reducing energy consumption and pollution discharge . It includes waste heat boiler flue and steam drum. The waste heat boiler flue is installed horizontally on the bracket. One end of the waste heat boiler flue is provided with a waste heat high-temperature flue gas inlet, and the other end is equipped with a flue gas outlet. The flue gas outlet is connected to the chimney. A superheater, an evaporator, and an economizer are installed in the duct in sequence along the flow direction of the flue gas. The high-temperature flue gas enters the flue of the waste heat boiler from the waste heat high-temperature flue gas inlet, and flushes the vertical tube bundles of the superheater, evaporator, and economizer in sequence. Then it is discharged into the atmosphere from the flue gas outlet through the chimney. It is characterized in that: the convection section of the organic heat carrier boiler is also arranged in the flue of the waste heat boiler, and the convection section of the organic heat carrier boiler is arranged behind the economizer along the flow direction of the flue gas. department.

Description

A dual-medium waste heat boiler

technical field

The utility model relates to the technical field of waste heat boilers, in particular to a double-medium waste heat boiler.

Background technique

　　The waste heat boiler is a boiler that uses the waste heat in waste gas, waste materials or waste liquid in various industrial processes and the heat generated by the combustion of combustible substances to heat water to a certain working medium, because it can greatly improve the use of heat released by fuel combustion It has a good energy-saving effect. Conventional waste heat boilers mostly use a single heat transfer medium, such as waste heat steam boilers and waste heat organic heat carrier boilers. The boiler provides hot water for heating. In this case, if two boilers are installed, not only the equipment cost is high, but also the energy consumption is large, which cannot meet the current energy saving and emission reduction requirements.

Contents of the invention

In view of the above problems, the utility model provides a dual-medium waste heat boiler, which can provide superheated steam for industrial production and hot water for heating at the same time, thus effectively reducing boiler purchase and operating costs, and greatly reducing energy consumption. consumption and pollution.

The technical solution is as follows: it includes a waste heat boiler flue and a steam drum. The waste heat boiler flue is installed horizontally on a bracket. Outlet, the flue gas outlet is connected to the chimney, and the waste heat boiler flue is provided with a superheater, an evaporator, and an economizer in sequence along the flue gas flow direction, and high-temperature flue gas enters the waste heat boiler from the waste heat high-temperature flue gas inlet The flue, which flushes the vertical tube bundles of the superheater, evaporator, and economizer in sequence, is discharged into the atmosphere from the flue gas outlet through the chimney, and is characterized in that an organic heat carrier boiler is also arranged in the flue of the waste heat boiler The convection section of the organic heat carrier boiler is arranged at the rear of the economizer along the flue gas flow direction.

It is further characterized by:

One end of the convection section of the organic heat carrier boiler is an oil outlet, and the other end is an oil return port;

The water outlet of the economizer is connected to the steam drum through a pipeline, and the steam drum is connected to the evaporator through a downcomer and an upcomer to form a circulation loop, and the steam drum is connected to the superheater through an upper steam pipeline. The steam outlet of the superheater is externally connected to the superheated steam main pipe.

The beneficial effect of the dual-medium waste heat boiler of the present utility model lies in that its structure is simple, and there are two kinds of heating surfaces in the flue, so that the high-temperature flue gas generated in the previous link is heated by two media of water and heat-conducting oil at the same time, so as to achieve the same The purpose of providing superheated steam for production and hot water for domestic heating can effectively reduce boiler purchase and operation costs, and can greatly reduce energy consumption and pollution emissions.

Description of drawings

Fig. 1 is a schematic diagram of the dual-media waste heat boiler of the present invention.

Detailed ways

As shown in Figure 1, the dual-media waste heat boiler of the present invention includes a waste heat boiler flue 1 and a steam drum 2. The waste heat boiler flue 2 is horizontally installed on a support 3. One end of the waste heat boiler flue 1 is provided with a waste heat high-temperature flue gas inlet 4 and the other One end is provided with a flue gas outlet 5, and the flue gas outlet 5 is connected to the chimney 6. The waste heat boiler flue 1 is provided with a superheater 7, an evaporator 8, and an economizer 9 in sequence along the flow direction of the flue gas. The gas inlet 4 enters the waste heat boiler flue 2, flushes the vertical tube bundles of the superheater 7, evaporator 8, and economizer 9 in sequence, and then is discharged into the atmosphere from the flue gas outlet 5 through the chimney 6. The convection section 10 of the heat carrier boiler, the convection section 10 of the organic heat carrier boiler is arranged at the rear of the economizer 9 along the flue gas flow direction; one end of the convection section 10 of the organic heat carrier boiler is the oil outlet 11, and the other end is the oil return port 12; the water outlet of the economizer 9 is connected to the steam drum 2 through the pipe 13, the steam drum 2 is connected to the evaporator 8 through the downcomer 14 and the upcomer 15 to form a circulation loop, and the steam drum 2 is connected to the superheater through the upper steam pipe 16 7, the superheated steam outlet of the superheater 7 is externally connected to the superheated steam main pipe.

The following specifically describes the operation process of the utility model dual-medium waste heat boiler:

On the flue gas side, the high-temperature flue gas generated in the previous link enters the waste heat boiler flue 2 through the waste heat high-temperature flue gas inlet 4, and flushes the vertical tube bundles of the superheater 7, evaporator 8, economizer 9 and the convection flow of the organic heat carrier boiler in sequence. After the section 10, it is discharged into the chimney 6 through the flue gas outlet 5, and finally discharged into the atmosphere;

On the soda water side, deoxygenated water first enters the economizer 9 and absorbs heat in the economizer 9 to raise the temperature to slightly lower than the saturation temperature under the pressure of the steam drum, then enters the steam drum 2, and enters the water in the steam drum 2 and the steam drum 2 After the saturated water is mixed, it enters the evaporator 8 along the downcomer 14 below the steam drum 2 to absorb heat and start to produce steam. Usually, only part of the saturated water entering the evaporator 8 directly turns into steam, so the amount of water flowing in the evaporator 8 It is a mixture of steam and water, which leaves the evaporator 8 through the riser pipe 15 and enters the steam drum 2 and is separated by the steam-water separation device on the upper part of the steam drum 2, where the separated water falls into the water space in the steam drum 2 and enters again through the downcomer 14 The evaporator 8 absorbs heat to generate a mixture of steam and water, and the separated saturated steam enters the superheater 7 through the upper steam pipe 14 and absorbs heat to make the saturated steam become superheated steam, and then flows into the superheated steam main pipe from the superheated steam outlet for production;

Mineral heat transfer oil circulates in a closed circuit in the convection section of the organic heat carrier boiler. The mineral oil enters the convection section from the oil return port and then flows out from the oil outlet. After passing through the superheater 7, evaporator 8, and economizer 9, the flue gas passes through the organic After the convection section of the heat carrier boiler, the temperature drops to about 150°C. At the same time, the mineral heat transfer oil in the convection section of the organic heat carrier boiler is heated to heat the corresponding medium or provide hot water for domestic heating.

Claims (3)

1. a two medium waste heat boiler, it comprises waste heat boiler flue and drum, described waste heat boiler flue level is installed on support, described waste heat boiler flue one end is provided with residual heat high-temperature gas approach, the other end is provided with exhanst gas outlet, described exhanst gas outlet connects chimney, superheater is disposed with along flow of flue gas direction in described waste heat boiler flue, evaporimeter, economizer, high-temperature flue gas enters described waste heat boiler flue from described residual heat high-temperature gas approach, wash away described superheater successively, evaporimeter, air is entered from described exhanst gas outlet through described chimney after the vertical tube bundle of economizer, it is characterized in that: the convection section that boiler of organic heat carrier is also set in described waste heat boiler flue, described boiler of organic heat carrier convection section is arranged at the rear portion of the described economizer along flow of flue gas direction.

2. the two medium waste heat boiler of one according to claim 1, is characterized in that: one end of described boiler of organic heat carrier convection section is oil-out, the other end is oil return opening.

3. the two medium waste heat boiler of one according to claim 1, it is characterized in that: the delivery port of described economizer is connected by pipeline with described drum, described drum is connected to form closed circuit by down-comer, tedge and described evaporimeter, described drum is connected with described superheater by top jet chimney, the steam (vapor) outlet external superheated steam mother pipe of described superheater.