Pneumatic spiral transverse jet flow quench cooler

Abstract

The pneumatic spiral transverse jet quench cooler is characterized in that the pneumatic spiral transverse jet quench cooler comprises a reaction cylinder, the two ends of the reaction cylinder are provided with an air inlet and an air outlet respectively, the air inlet is communicated with the air outlet, jet holes are formed in the side wall of the reaction cylinder, a liquid inlet pipe filled with cooling liquid is installed on the side wall of the reaction cylinder, and the jet holes are communicated with the liquid inlet pipe. The jet flow hole is connected with a jet device which is communicated with the liquid inlet pipe and is used for jetting the cooling liquid, and a plurality of baffle plates are horizontally mounted in the reaction cylinder, so that the extremely cold effect of the gas can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of quench coolers, and in particular to a pneumatic spiral transverse jet quench cooler. Background Art

[0002] Many industries need to adopt incineration technology, and the high-temperature flue gas generated by the incinerator needs to be cooled quickly to avoid dioxin pollution. The composition of the gas coming out of the incinerator varies greatly from industry to industry, and some industries contain corrosive gases such as hydrogen chloride and hydrogen fluoride. Due to the considerable differences in the incineration process, the temperature of the flue gas generated by the incinerator ranges from 300℃ to 1500℃. The most traditional process for flue gas quenching is to use a quenching spray tower, in which the flue gas and the coolant are directly mixed and contacted to complete the heat transfer process. However, the defects of the traditional quenching spray tower are very obvious. For example, the allowable flue gas flow rate is usually not higher than 5m / s, which means that under the condition of large flue gas treatment volume, either the equipment diameter is increased or multiple sets of flue gas quenching towers are used, and the investment cost is huge. In recent years, various quenchers have been developed, mainly focusing on improving quenching efficiency and reducing investment costs. Although certain results have been achieved, there are still many problems compared with traditional quenching spray towers, such as unstable gas cooling performance, narrow allowable gas load fluctuation and temperature fluctuation range, long cooling time, large fluctuations in absorption liquid concentration and temperature, high corrosion rate and damage rate when exposed to high temperature environment on the inlet side, and short service life. Summary of the invention

[0003] The object of the present invention is to provide a pneumatic spiral transverse jet quencher which can greatly improve the extreme cooling effect of gas.

[0004] According to the present invention, a pneumatic spiral transverse jet quencher is provided, comprising a reaction tube, wherein an air inlet and an air outlet are respectively provided at both ends of the reaction tube, the air inlet and the air outlet are connected, a jet hole is opened on the side wall of the reaction tube, a liquid inlet pipe for injecting coolant is installed on the side wall of the reaction tube, the jet hole is connected to an injection device connected to the liquid inlet pipe for injecting the coolant, and a plurality of baffles are horizontally installed in the reaction tube.

[0005] In actual use, the gas first enters the reaction cylinder through the air inlet, the coolant enters the injection device through the liquid inlet, and then the injection device transports the coolant to the reaction cylinder through the jet hole. During the downward flow of the airflow, it comes into contact with the coolant liquid of the lateral jet. The liquid jet causes the liquid phase to separate into mist droplets, which greatly increases the gas-liquid contact surface area and greatly improves the cooling effect.

[0006] At the same time, before the gas-liquid mixture leaves the reaction tube, a plurality of baffles are provided, which increase the residence time of the gas. The extension of the residence time provides sufficient guarantee for the gas-liquid balance.

[0007] Furthermore, a cavity is circumferentially provided in the reaction cylinder, the liquid inlet pipe is installed on the outer wall of the cavity, and a chamber for containing the cooling liquid is provided in the cavity.

[0008] Furthermore, the gas inlet of the reaction cylinder is equipped with a pneumatic spiral distributor for changing the flow direction of the original gas.

[0009] Furthermore, the pneumatic spiral distributor includes: a disk body horizontally fixed to the air inlet and a plurality of blades circumferentially mounted on the disk body, the blades are arranged in a spiral, and the blades can rotate circumferentially around the disk body.

[0010] Before the high-temperature flue gas enters the reaction tube, it passes through the pneumatic spiral distributor and is forced to change the original axial flow direction, so that the flue gas enters the reaction tube along a spiral cutting path.

[0011] Furthermore, an atomizing impact plate is installed in the reaction cylinder, the atomizing impact plate is located on a side close to the air inlet, and the baffle is located on a side close to the air outlet.

[0012] Furthermore, the reaction tube is made of graphite. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the pneumatic spiral transverse jet quench cooler described in an embodiment of the present invention.

[0014] In the figure, 1-reaction cylinder; 2-air inlet; 3-air outlet; 4-jet hole; 5-liquid inlet pipe; 6-baffle; 7-cavity; 8-pneumatic spiral distributor; 81-disc; 82-fan blades; 9-atomizing impact plate. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0016] Combination Figure 1, shows a pneumatic spiral transverse jet quench cooler of the present invention, including a reaction tube 1, an air inlet 2 and an air outlet 3 are respectively provided at both ends of the reaction tube 1, the air inlet 2 and the air outlet 3 are connected, a jet hole 4 is opened on the side wall of the reaction tube 1, a liquid inlet pipe 5 for injecting coolant is installed on the side wall of the reaction tube 1, the jet hole 4 is connected to an injection device for injecting coolant which is connected to the liquid inlet pipe 5, and a plurality of baffles 6 are horizontally installed in the reaction tube 1.

[0017] In actual use, the gas first enters the reaction tube 1 through the air inlet 2, the coolant enters the injection device through the liquid inlet, and then the injection device transports the coolant to the reaction tube 1 through the jet hole 4. During the downward flow of the gas flow, it contacts the coolant liquid phase of the horizontal jet. The liquid phase jet causes the liquid phase to separate into mist droplets, which greatly increases the gas-liquid contact surface area and greatly improves the cooling effect.

[0018] At the same time, before the gas-liquid mixture leaves the reaction tube 1, a plurality of baffles 6 are provided, which increase the residence time of the gas. The extension of the residence time provides a sufficient guarantee for the gas-liquid balance.

[0019] A cavity 7 is circumferentially arranged on the reaction cylinder 1 , a liquid inlet pipe 5 is installed on the outer wall of the cavity 7 , and a chamber for receiving cooling liquid is arranged inside the cavity 7 .

[0020] The gas inlet 2 of the reaction cylinder 1 is equipped with a pneumatic spiral distributor 8 for changing the flow direction of the original gas.

[0021] The pneumatic spiral distributor 8 includes: a disk body 81 horizontally fixed to the air inlet 2 and a plurality of blades 82 circumferentially mounted on the disk body 81 . The blades 82 are arranged in a spiral and can rotate circumferentially around the disk body 81 .

[0022] Before the high-temperature flue gas enters the reaction tube 1 , it passes through the pneumatic spiral distributor 8 and is forced to change the original axial flow direction, so that the flue gas enters the reaction tube 1 along a spiral cutting path.

[0023] It is worth noting that there are many ways for the multiple blades 82 to rotate circumferentially around the disk body 81. For example, the disk body 81 can be equipped with a rotatable shaft on the side facing the reaction tube 1. The shaft is driven by a motor, and the blades 82 are fixed on the shaft in sequence.

[0024] An atomizing impact plate 9 is installed in the reaction tube 1 . The atomizing impact plate 9 is located on a side close to the air inlet 2 . The baffle plate 6 is located on a side close to the air outlet 3 .

[0025] In order to reduce air flow short-circuiting and avoid re-aggregation of some droplets, an atomizing impact plate is set after the gas-liquid mixed contact to impact and crush the larger droplets entrained by the air flow into smaller particles.

[0026] The reaction tube 1 is made of graphite.

[0027] Graphite has the advantages of efficient cooling performance and strong corrosion resistance.

[0028] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A pneumatic spiral transverse jet quench cooler, characterized in that: It includes a reaction cylinder, wherein an air inlet and an air outlet are respectively provided at both ends of the reaction cylinder, the air inlet and the air outlet are connected, a jet hole is opened on the side wall of the reaction cylinder, a liquid inlet pipe for injecting coolant is installed on the side wall of the reaction cylinder, the jet hole is connected to an injection device connected to the liquid inlet pipe for injecting the coolant, and a plurality of baffles are horizontally installed in the reaction cylinder.

2. The pneumatic spiral transverse jet quencher according to claim 1, characterized in that: The reaction cylinder is provided with a cavity layer in the circumference thereof, the liquid inlet pipe is installed on the outer wall of the cavity, and a chamber for containing the cooling liquid is provided in the cavity.

3. The pneumatic spiral transverse jet quencher according to claim 2, characterized in that: The air inlet of the reaction cylinder is equipped with a pneumatic spiral distributor for changing the flow direction of the original gas.

4. The pneumatic spiral transverse jet quencher according to claim 3, characterized in that: The pneumatic spiral distributor comprises: a disc body horizontally fixed to the air inlet and a plurality of blades circumferentially mounted on the disc body, wherein the blades are arranged in a spiral and can rotate circumferentially around the disc body.

5. The pneumatic spiral transverse jet quencher according to claim 4, characterized in that: An atomizing impact plate is installed in the reaction cylinder, and the atomizing impact plate is located on a side close to the air inlet, and the baffle is located on a side close to the air outlet.

6. The pneumatic spiral transverse jet quencher according to claim 5, characterized in that: The reaction tube is made of graphite.

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