CN210689200U

CN210689200U - Heating device for high temperature anaerobic cracking experiment

Info

Publication number: CN210689200U
Application number: CN201921045883.2U
Authority: CN
Inventors: 孙东; 王越; 齐光峰; 程汉东; 袁胜; 董伟佳; 刘聪; 赵雷; 徐丹; 马坤; 胡晓峰; 范路
Original assignee: China Petroleum and Chemical Corp; Technology Inspection Center of Sinopec Shengli Oilfield Co
Current assignee: China Petroleum and Chemical Corp; Technology Inspection Center of Sinopec Shengli Oilfield Co
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-06-05
Anticipated expiration: 2029-07-05

Abstract

The utility model relates to a heating device of high temperature anaerobic cracking experiment. The technical scheme is as follows: a first regenerative chamber and a second regenerative chamber are respectively arranged on two sides of the hearth, a right regenerative burner is installed in the first regenerative chamber, a left regenerative burner is installed in the second regenerative chamber, a ceramic test tube hole is formed in the middle of the hearth, and a gas system of the hearth is provided with a first valve and a second valve and is connected with a temperature control system to control the on-off of gas; the lower parts of the first heat storage chamber and the second heat storage chamber are connected with a reversing valve, an air blower and an induced draft fan through pipelines and are connected with a flue. The beneficial effects are that: the temperature of heat accumulation and combustion can reach more than 1000 ℃, and the experimental condition with particularly high heat demand is met; the heat accumulator adopts honeycomb ceramics with large specific surface area, thereby improving the heat transfer efficiency and reducing the volume of the combustor; the reversing valve is made of heat-resistant alloy materials, so that the reversing valve can meet the requirements of working in a high-temperature environment and sealing performance.

Description

Heating device for high temperature anaerobic cracking experiment

Technical Field

The utility model relates to a heat accumulation burner, in particular to heating device of high temperature anaerobic schizolysis experiment.

Background

The heat accumulation combustion technology integrates a heat accumulation system, a smoke exhaust system, a combustion system and a furnace body structure, and the temperature of combustion air is increased to be more than 800 ℃ by fully recovering the waste heat of smoke gasThe exhaust gas temperature is reduced to below 200 ℃, and the effects of energy conservation and high-efficiency combustion are achieved. The heat accumulation burning realizes waste heat recovery and preheats combustion air through the regenerator, and the regenerator is utility model in 1858 years, but the regenerator of early regenerator is checker brick, and unit heat transfer area is little, cost is with high costs, bulky, therefore its development has received the restriction. In the later stage, with the development of smelting and ceramic industries, alloy steel or ceramic is used for manufacturing heat exchangers, and the heat exchangers are widely applied. However, the heat exchanger has a long-term development trouble because its efficiency is limited by its inherent structure and its maintenance cost is high. In the 70 s of the 19 th century, heat exchange type self waste heat burners were developed for the first time in the UK to preheat combustion air with flue gas. In 1971, Weinberg first proposed the concept of "super enthalpy combustion". In 1982, British gas and Hot Work Development company in England jointly develop a heat storage recovery system taking ceramic balls as heat carriers, and a first set of heat storage type ceramic burner system is built on a 1370 ℃ glass melting furnace, so that combustion air can be preheated to more than 1000 ℃, and the energy-saving effect is obvious, which marks the real maturity of a small-sized high-efficiency heat storage combustion system. In the 90 s of the 20 th century, japan steel pipe corporation and japan industrial furnace corporation jointly developed a new burner using honeycomb ceramics as a heat storage body, and a new combustion technology, high temperature air combustion technology (HTAC), was proposed to realize mass popularization of the heat storage combustion technology. The high-temperature air combustion technology is called as a second generation heat accumulating type combustion technology, and the principle of the high-temperature air combustion technology is that preheated air is sucked when being sprayed into a hearth to form a low-oxygen environment with the oxygen content of 21% -2%, and then fuel is combusted in airflow. Compared with the traditional combustion mode, the method has CO₂With NO_XLow discharge, low noise, high efficiency, etc., and thus can be rapidly popularized in the heating industry.

Because of the combustion in a low oxygen environment, HTAC flames exhibit some characteristic properties, and researchers at home and abroad have made some studies in this regard. China also starts to research regenerative combustion technology from the end of the 80 s of the 20 th century, and starts to own related patents after the 90 s, so that an industrial furnace using a regenerative burner is developed into a regenerative industrial furnace, namely, a burner, a regenerative chamber and a furnace body are organically combined. Since 1993, the use of HTAC for manufacturing a regenerative heating furnace has been gradually popularized in the industrial field of our country. In recent decades, the research on HTAC has achieved good results, and our country mainly studies in this field on heat-accumulating high-temperature air combustion, and has been widely popularized and applied in a plurality of high-energy-consumption industry fields such as steel heating furnaces, aluminum melting furnaces, copper melting furnaces, glass kilns, refractory sintering furnaces, and the like.

Besides the matching of the heat accumulator, another key matching component, namely a reversing valve, has the defects of high working temperature, frequent action, reverse passing of flue gas and combustion air in the same valve body and high switching speed, stability and reliability.

The anaerobic cracking needs a large amount of electric energy to reach the required heating temperature through the heating of the tubular electric furnace, the temperature can reach over 1000 ℃, the consumption of the electric energy is large, and the resource is not favorably saved.

Disclosure of Invention

The utility model discloses an aim at is exactly the above-mentioned defect to prior art existence, provides a heating device of high temperature anaerobic schizolysis experiment, and the heat energy that emits through the heat accumulation burning replaces among the tubular electric furnace to carry out the anaerobic schizolysis through the heat transfer mode of electric energy conversion into heat energy, has improved heat exchange efficiency, has practiced thrift the electric energy.

The utility model provides a heating device of high temperature anaerobic cracking experiment, its technical scheme is: comprises a temperature control system (1), a fuel inlet end (2), a first valve (3), a second valve (4), a hearth (5), a first regenerative chamber (6), a second regenerative chamber (7), a left regenerative burner (A), a right regenerative burner (B), a ceramic test tube hole (8), a blower (9), a reversing valve (10), an induced draft fan (11), a flue (12) and a pipeline (13), a first heat storage chamber (6) and a second heat storage chamber (7) are respectively arranged at two sides of the hearth (5), a right heat accumulating type burner (B) is arranged in the first heat accumulating chamber (6), a left heat accumulating type burner (A) is arranged in the second heat accumulating chamber (7), a ceramic test tube hole (8) is arranged in the middle of the hearth (5), a ceramic test tube is arranged in the ceramic test tube hole (8), and an object to be heated is placed in the ceramic test tube; the middle of the ceramic test tube hole (8) is provided with a temperature sensor with uniform position, and the temperature sensor is connected with a temperature control system (1) and used for measuring and controlling the temperature of the ceramic test tube hole (8); a first valve (3) and a second valve (4) are installed on a gas system of the hearth (5), and the first valve (3) and the second valve (4) are connected with a temperature control system (1) to control the on-off of gas; the lower parts of the first heat storage chamber (6) and the second heat storage chamber (7) are connected with a reversing valve (10), an air blower (9) and an induced draft fan (11) through a pipeline (13) and are connected with a flue (12).

Preferably, the lower parts of the first heat storage chamber (6) and the second heat storage chamber (7) are connected with a reversing valve (10) through a pipeline (13), a third interface of the reversing valve (10) is connected with an air blower (9), a fourth interface is connected with an inlet of an induced draft fan (11) through a pipeline, and an outlet of the induced draft fan (11) is connected to a flue (12).

Preferably, heat insulation layers are paved around the hearth (5), the first heat storage chamber (6) and the second heat storage chamber (7).

Preferably, the reversing valve (10) adopts a four-port reversing valve and is made of a heat-resistant alloy material.

Preferably, the left heat accumulating type burner (a) and the right heat accumulating type burner (B) are respectively made of honeycomb ceramics with large specific surface area, and the honeycomb ceramics are designed by straight holes.

The utility model has the advantages that: 1. the utility model arranges ceramic test tube holes on the heat accumulator furnace, and puts the ceramic test tubes into the holes for high-temperature heating; 2. the temperature sensor in the ceramic test tube hole and the valve of the fuel pipeline are connected with a temperature control system, and the temperature of the hearth hole is controlled by controlling the amount of fuel; 3. the heating mode of anaerobic cracking replaces heat energy converted from electric energy in a tubular electric furnace by heat energy released by regenerative combustion, the regenerative combustion can generate a large amount of heat, the temperature can reach more than 1000 ℃, and the anaerobic cracking furnace can be used for experimental conditions with high temperature demand on heat; 4. the heat accumulator adopts honeycomb ceramics with large specific surface area, which improves the heat transfer efficiency and effectively reduces the volume of the burner due to the effect of the large specific surface area. In addition, the straight hole design of the honeycomb ceramics effectively reduces the ventilation resistance, reduces the burden of combustion-supporting and smoke exhaust fans, reduces air leakage, is convenient to control, is also beneficial to the discharge of smoke dust, has the soot blowing effect and reduces the soot deposition and hole blockage; 5. the gas switching valve is made of heat-resistant alloy materials, can meet the requirements of high-temperature environment work and precision machining so as to meet sealing performance, can realize instantaneous action, and avoids the distribution and transmission of electricity by the valve so as to avoid unreliability of an electric appliance at high temperature.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

in the upper diagram: the device comprises a temperature control system 1, a fuel inlet end 2, a first valve 3, a second valve 4, a hearth 5, a first regenerator 6, a second regenerator 7, a left regenerative burner A, a right regenerative burner B, a ceramic test tube hole 8, an air blower 9, a reversing valve 10, an induced draft fan 11, a flue 12 and a pipeline 13.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Embodiment 1, refer to fig. 1, the utility model provides a heating device of high temperature anaerobic cracking experiment, including temperature control system 1, fuel inlet end 2, first valve 3, second valve 4, furnace 5, first regenerator 6, second regenerator 7, left side heat accumulation formula combustor a, right side heat accumulation formula combustor B, ceramic test tube hole 8, air-blower 9, switching-over valve 10, draught fan 11, flue 12, pipeline 13, the both sides of furnace 5 are equipped with first regenerator 6 and second regenerator 7 respectively, install right side heat accumulation formula combustor B in the first regenerator 6, install left side heat accumulation formula combustor a in the second regenerator 7, be equipped with ceramic test tube hole 8 in the middle of furnace 5, and install the ceramic test tube in ceramic test tube hole 8, put into the object that needs to be heated in the ceramic test tube; the middle of the ceramic test tube hole 8 is provided with a temperature sensor with uniform position, and the temperature sensor is connected with the temperature control system 1 and used for measuring and controlling the temperature of the ceramic test tube hole 8; a first valve 3 and a second valve 4 are installed on a gas system of the hearth 5, and the first valve 3 and the second valve 4 are connected with the temperature control system 1 to control the on-off of gas; the lower parts of the first heat storage chamber 6 and the second heat storage chamber 7 are connected with a reversing valve 10, an air blower 9 and an induced draft fan 11 through a pipeline 13 and are connected with a flue 12.

The lower parts of the first heat storage chamber 6 and the second heat storage chamber 7 are connected with a reversing valve 10 through a pipeline 13, a third interface of the reversing valve 10 is connected with an air blower 9, a fourth interface of the reversing valve is connected with an inlet of an induced draft fan 11 through a pipeline, and an outlet of the induced draft fan 11 is connected to a flue 12.

In addition, heat insulation layers are laid around the hearth 5, the first heat storage chamber 6 and the second heat storage chamber 7, so that the heat insulation effect is improved; moreover, the reversing valve 10 is a pneumatic reversing valve with four interfaces and is made of a heat-resistant alloy material; the left heat accumulating type combustor A and the right heat accumulating type combustor B are respectively made of honeycomb ceramics with large specific surface areas, and the honeycomb ceramics adopt a straight hole design.

The utility model provides a heating device's of high temperature anaerobic cracking experiment application method, its technical scheme is including following process:

when the heat accumulating type combustor B is in operation, the blower 9 sends combustion-supporting air into the pipeline 13, the combustion-supporting air firstly flows to the first heat accumulating chamber 6 under the action of the reversing valve 10, the combustion-supporting air at room temperature is heated by the high-temperature heat accumulator which has accumulated heat in the previous period in the heat accumulating type combustor B at the right side, and then the combustion-supporting air is mixed with fuel gas to participate in combustion; the heat generated by combustion can heat the ceramic test tube in the ceramic test tube hole 8 in the hearth 5, the temperature required by heating is reached through the temperature control system 1, high-temperature flue gas generated by combustion flows to the second regenerative chamber 7, the left regenerative burner A in the second regenerative chamber 7 is heated, the temperature of the left regenerative burner A is reduced, and the high-temperature flue gas is discharged along the flue 12 under the action of the induced draft fan 11; in the process, the right heat accumulating type combustor B plays the role of a combustor, and the left heat accumulating type combustor A plays the role of a smoke exhaust channel; after the operation is carried out for a proper time, the reversing valve is reversed, the roles of the two sides are exchanged, combustion air is supplied by the left heat accumulating type burner A, and smoke is discharged by the right heat accumulating type burner B.

Preferably, when anaerobic cracking is carried out in the ceramic test tube, sealing flanges are arranged at two ends of the ceramic test tube, nitrogen is introduced into the ceramic test tube through the flanges, the anaerobic condition in the ceramic test tube is kept, and heating is carried out.

1. The utility model arranges ceramic test tube holes on the heat accumulator furnace, and puts the ceramic test tubes into the holes for high-temperature heating; 2. the temperature sensor in the ceramic test tube hole and the valve of the fuel pipeline are connected with a temperature control system, and the temperature of the hearth hole is controlled by controlling the amount of fuel; 3. the heating mode of anaerobic cracking replaces heat energy converted from electric energy in a tubular electric furnace by heat energy released by regenerative combustion, the regenerative combustion can generate a large amount of heat, the temperature can reach more than 1000 ℃, and the anaerobic cracking furnace can be used for experimental conditions with high temperature demand on heat; 4. the heat accumulator adopts honeycomb ceramics with large specific surface area, which improves the heat transfer efficiency and effectively reduces the volume of the burner due to the effect of the large specific surface area. In addition, the straight hole design of the honeycomb ceramics effectively reduces the ventilation resistance, reduces the burden of combustion-supporting and smoke exhaust fans, reduces air leakage, is convenient to control, is also beneficial to the discharge of smoke dust, has the soot blowing effect and reduces the soot deposition and hole blockage; 5. the gas switching valve is made of heat-resistant alloy materials, can meet the requirements of high-temperature environment work and precision machining so as to meet sealing performance, can realize instantaneous action, and avoids the distribution and transmission of electricity by the valve so as to avoid unreliability of an electric appliance at high temperature.

The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.

Claims

1. The utility model provides a heating device of high temperature anaerobic cracking experiment which characterized in that: comprises a temperature control system (1), a fuel inlet end (2), a first valve (3), a second valve (4), a hearth (5), a first regenerative chamber (6), a second regenerative chamber (7), a left regenerative burner (A), a right regenerative burner (B), a ceramic test tube hole (8), a blower (9), a reversing valve (10), an induced draft fan (11), a flue (12) and a pipeline (13), a first heat storage chamber (6) and a second heat storage chamber (7) are respectively arranged at two sides of the hearth (5), a right heat accumulating type burner (B) is arranged in the first heat accumulating chamber (6), a left heat accumulating type burner (A) is arranged in the second heat accumulating chamber (7), a ceramic test tube hole (8) is arranged in the middle of the hearth (5), a ceramic test tube is arranged in the ceramic test tube hole (8), and an object to be heated is placed in the ceramic test tube; the middle of the ceramic test tube hole (8) is provided with a temperature sensor with uniform position, and the temperature sensor is connected with a temperature control system (1) and used for measuring and controlling the temperature of the ceramic test tube hole (8); a first valve (3) and a second valve (4) are installed on a gas system of the hearth (5), and the first valve (3) and the second valve (4) are connected with a temperature control system (1) to control the on-off of gas; the lower parts of the first heat storage chamber (6) and the second heat storage chamber (7) are connected with a reversing valve (10), an air blower (9) and an induced draft fan (11) through a pipeline (13) and are connected with a flue (12).

2. The heating device for high-temperature anaerobic cracking experiment as claimed in claim 1, which is characterized in that: the lower parts of the first heat storage chamber (6) and the second heat storage chamber (7) are connected with a reversing valve (10) through a pipeline (13), a third interface of the reversing valve (10) is connected with an air blower (9), a fourth interface is connected with an inlet of an induced draft fan (11) through a pipeline, and an outlet of the induced draft fan (11) is connected to a flue (12).

3. The heating device for high-temperature anaerobic cracking experiment as claimed in claim 1, which is characterized in that: and heat insulation layers are paved around the hearth (5), the first heat storage chamber (6) and the second heat storage chamber (7).

4. The heating device for high-temperature anaerobic cracking experiment as claimed in claim 1, which is characterized in that: the reversing valve (10) is a four-port reversing valve and is made of a heat-resistant alloy material.

5. The heating device for high-temperature anaerobic cracking experiment as claimed in claim 1, which is characterized in that: the left heat accumulating type combustor (A) and the right heat accumulating type combustor (B) are respectively made of honeycomb ceramics with large specific surface area, and the honeycomb ceramics are designed by straight holes.