A high temperature steam recovery device
The high-temperature steam recovery device with a vertical tank structure utilizes a three-stage absorption structure of spray, water film, and packing to solve the problem of direct emission of secondary flash steam from the high-temperature steam and condensate recovery tank in cigarette manufacturing, achieving efficient heat recovery and energy saving and emission reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA TOBACCO ANHUI IND CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-09
AI Technical Summary
In the cigarette manufacturing process, high-temperature steam and secondary flash steam and excess steam in the condensate recovery tank are directly emitted, resulting in energy waste. Efficient recycling and utilization are needed to achieve energy conservation and emission reduction.
The high-temperature steam recovery device adopts a vertical tank structure and utilizes a three-stage absorption structure of spray, water film and packing. The cooling water is atomized and mixed with high-temperature steam through atomizing nozzles and a shower plate to form a water film to increase the heat exchange area. The packing section is set in the recovery tank to increase the contact time and achieve efficient heat recovery.
It improves heat recovery efficiency, reduces equipment energy consumption and waste emissions, reduces energy consumption, improves resource utilization efficiency, reduces production costs, and enhances the company's environmental image.
Smart Images
Figure CN224340741U_ABST
Abstract
Claims
1. A high-temperature steam recovery device, characterized in that: An atmospheric pressure vessel with a vertical tank structure, used for recovering high-temperature steam; The tank is divided into an upper mixing and exchange zone and a lower liquid storage zone, with the height of the high-temperature steam inlet as the boundary. Within the mixing and exchange zone, atomizing nozzles, a spray plate, and a packing section are spaced from top to bottom. The atomizing nozzles are centrally located at the top of the tank and are used to atomize the cooling water pumped into the tank. The spray plate is located between the atomizing nozzles and the packing section, and is used to collect the falling atomized droplets and evenly spray them onto the packing section below. The packing section has at least one layer of packing. The liquid storage zone is used to store the mixture formed by the condensation of the high-temperature steam and cooling water. The mixture can be discharged outwards through the outlet at the bottom of the tank.
2. The high-temperature steam recovery device according to claim 1, characterized in that: The atomizing nozzle includes a fixed cylinder and a movable cylinder coaxially mounted. It receives externally supplied cooling water through the water inlet side shaft end. The fixed cylinder is axially continuous, and the movable cylinder is slidably fitted inside the fixed cylinder along the axial direction, with a radial gap between them to form an annular cavity. A spring is built into the annular cavity, and the spring is coaxially fitted on the movable cylinder and tensioned axially between the movable cylinder and the fixed cylinder. The water inlet side shaft end of the movable cylinder is open, and the water outlet side shaft end is sealed by a blind plate. The cylinder body is divided into an inlet section and an outlet section along the axial direction from the water inlet side to the water outlet side. The length of the inlet section is greater than that of the outlet section. The outer peripheral wall of the inlet section is closed, and a number of atomizing holes are evenly distributed on the outer peripheral wall of the outlet section. When the spring is in its natural state, the two shaft ends of the movable cylinder and the fixed cylinder are flush. After cooling water is introduced into the movable cylinder from the water inlet side, the movable cylinder can slide towards the water outlet side by the pressure of the cooling water until part or all of the atomizing holes of the outlet section are exposed outside the fixed cylinder.
3. The high-temperature steam recovery device according to claim 2, characterized in that: Cooling water pumped into the tank is supplied by a cooling water delivery pipeline connected to the outside of the recovery tank. The cooling water delivery pipeline includes a main cooling water pipe and a cooling water bypass connected in parallel with the main cooling water pipe. The main cooling water pipe is connected to the spray inlet at the middle of the top of the recovery tank. Cooling water is supplied to the inlet side shaft end of the atomizing nozzle through the spray inlet. A cooling water regulating valve and two butterfly valves located on both sides of the cooling water regulating valve are provided on the pipe section connected in parallel with the cooling water bypass. The flow rate of the cooling water to be introduced into the recovery tank is regulated by the cooling water regulating valve. A butterfly valve is also provided on the cooling water bypass.
4. The high-temperature steam recovery device according to claim 1, characterized in that, The packing section is equipped with multiple layers of packing. The structure of each layer of packing is as follows: circular stainless steel mesh sheets are set in a circular support ring plate to form packing sheets. The packing sheets are then set on the inner peripheral wall of the tank through the support ring plate and are horizontally spaced in the tank. Multiple layers of packing sheets are distributed at intervals along the height direction of the tank to form a layer of packing.
5. The high-temperature steam recovery device according to claim 1 or 4, characterized in that: Each layer of filler is 100mm thick.
6. The high-temperature steam recovery device according to claim 1, characterized in that: The cooling plate is a plate-shaped structure that is horizontally separated inside the tank. Several short channels are formed on the plate, which are regularly distributed around the center line of the tank and vertically connected. The cooling water is atomized by the atomizing nozzle and falls evenly into the packing section through each short channel.
7. The high-temperature steam recovery device according to claim 1, characterized in that: The upper part of the recycling tank is equipped with a pressure gauge; the tank body is equipped with a level gauge and a temperature detection element corresponding to the liquid storage area. The level gauge detects the real-time liquid level of the mixture in the tank, and the temperature detection element detects and displays the real-time temperature of the mixture in the tank.
8. The high-temperature steam recovery device according to claim 1, characterized in that: High-temperature steam is introduced into the recovery tank through the steam inlet in the middle of the tank body.
9. The high-temperature steam recovery device according to claim 1, characterized in that: The outlet at the bottom of the tank is connected to a mixed liquid output pipeline with a pressurized water pump, through which the mixed liquid is output.