Gas-fired boiler flue gas waste heat deep recovery system for salt manufacturing
By employing a deep waste heat recovery system for flue gas from a gas-fired boiler during the salt production process, and utilizing condensation and conveying mechanisms to cool the steam, the problem of the lack of condensation devices in the boiler is solved, and efficient collection and utilization of condensate are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-04-10
AI Technical Summary
Existing boilers lack effective steam cooling and condensation devices, requiring external condensation devices to cool the steam, which is inconvenient to use.
Design a deep waste heat recovery system for flue gas from a gas-fired boiler used in salt production, comprising a condensation mechanism and a conveying mechanism. The system utilizes spiral condenser tubes and condenser tube assemblies to cool the steam and collects the condensate through the conveying mechanism.
This technology enables efficient cooling of steam during the evaporation process, forming condensate that is easy to collect and utilize, thus improving operational convenience and efficiency.
Smart Images
Figure CN224105596U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to salt making equipment technical field especially relates to a kind of gas-fired boiler flue gas waste heat depth recovery system for salt making. BACKGROUND
[0002] In the traditional evaporation salt making process, seawater or salt lake water is introduced into an evaporation pond and concentrated by natural evaporation. When the salt concentration reaches a certain level, the brine is sent to a crystallization pond, and the brine is heated by steam generated by a boiler to accelerate water evaporation and make salt crystallize and precipitate.
[0003] Currently, in the process of evaporating brine using a steam-type boiler, the steam used for heating the brine is usually supplied continuously. However, when the supply of steam in the boiler increases, the steam may liquefy and form condensate water. However, there is no corresponding condensing device on the current boiler to cool the steam, which requires an external condensing device to cool the steam, making it inconvenient to use in practice. Therefore, we propose a gas-fired boiler flue gas waste heat depth recovery system for salt making to solve the above problems. SUMMARY
[0004] The utility model aims at solving the problem of the lack of a condensing device on the current boiler to cool the steam, which requires an external condensing device to cool the steam, making it inconvenient to use in practice, and proposes a gas-fired boiler flue gas waste heat depth recovery system for salt making.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A gas-fired boiler flue gas waste heat depth recovery system for salt making includes an evaporation tank, an evaporation pot is welded inside the evaporation tank, an air inlet pipe is welded through the bottom inner wall on one side of the evaporation tank, the air inlet pipe is used to connect with an external steam conveying pipe, a valve is installed in the air inlet pipe, the handle of the valve extends above the air inlet pipe, and the recovery system further includes:
[0007] A condensing mechanism is installed on the evaporation tank, the top of the condensing mechanism extends into the evaporation tank, and the condensing mechanism is used to cool the steam discharged from the evaporation tank.
[0008] A conveying mechanism is installed on the condensing mechanism, which is used to convey the cooled condensate water.
[0009] In one possible design, a docking ring is welded at the top opening of the evaporation tank, a cover plate is tightly clamped in the docking ring, and the cover plate is used to cover the evaporation pot.
[0010] In a possible design, the condensing mechanism comprises a first annular pipe sleeved on the evaporation box and welded with the evaporation box, a plurality of condensing pipe assemblies are installed on the top inner wall of the first annular pipe at equal intervals, the top of the condensing pipe assembly extends into the evaporation box and is fixedly connected with the top inner wall of one side of the evaporation box, and the first annular pipe is connected with the conveying mechanism.
[0011] In a possible design, the condensing pipe assembly comprises a first air outlet pipe penetrating through the top inner wall of one side of the evaporation box and welded with the top inner wall of one side of the evaporation box, the bottom end of the first air outlet pipe is welded with a first connecting box, the bottom inner wall of the first connecting box is welded with a spiral condensing pipe, the bottom end of the spiral condensing pipe is welded with a second connecting box, the spiral condensing pipe is communicated with the second connecting box, the bottom inner wall of the second connecting box is penetrated and welded with a mounting pipe, the bottom end of the mounting pipe extends into the first annular pipe and is welded with the top inner wall of the first annular pipe.
[0012] In a possible design, the inner wall of the first air outlet pipe is penetrated and welded with a second air outlet pipe, the top end of the second air outlet pipe extends into the butt ring and is fixedly connected with the inner wall of one side of the butt ring.
[0013] In a possible design, the conveying mechanism comprises a plurality of drainage pipes welded on the inner wall of one side of the first annular pipe at equal intervals, the bottom end of each of the plurality of drainage pipes extends below the first annular pipe and is welded with a second annular pipe, the inner wall of one side of the second annular pipe is penetrated and welded with a water outlet pipe, and the water outlet pipe is used to be connected with an external conveying pipe for conveying condensed water.
[0014] In a possible design, the inner wall of the drainage pipe is penetrated and welded with an air exhaust elbow, and the top end of the air exhaust elbow is fixedly installed with a one-way valve.
[0015] In the application, when in use, first, the air inlet pipe is connected with the pipeline for conveying high-temperature steam, then the salt-containing brine to be evaporated is poured into the evaporation pot, then the cover plate is clamped with the butt joint ring, and the valve is opened, so that the high-temperature steam flows into the evaporation box, thereby the evaporation pot can be heated, at this time, the brine can be heated by using the heat exchange principle until the brine is heated to boiling state to form steam, and in the process of evaporating the brine, steam needs to be continuously supplied into the evaporation box, so that the original steam in the evaporation box flows into the first air outlet pipe, and then flows into the spiral condensing pipe, since the spiral condensing pipe is spiral, the conveying area of the steam can be prolonged in the process of conveying the steam, so that the steam can be cooled to condensate water, and the condensate water and the gas flow into the first annular pipe, and in the process of heating and evaporating the brine, the steam formed in the evaporation pot can be conveyed to the first air outlet pipe through the second air outlet pipe, and then can be cooled by the spiral condensing pipe, after the condensate water flows into the first annular pipe, the condensate water can be conveyed into the second annular pipe through the plurality of drain pipes, and after the drain pipe is connected with the pipeline for conveying the condensate water, the condensate water can be conveyed, so that the condensate water can be conveniently collected and used, and after the steam is cooled, the gas part in the steam also flows into the first annular pipe and then flows into the drain pipe, at this time, the valve core in the one-way valve moves under the action of the gas pressure, so that the one-way valve is in the flow-through state, so that the cooled gas can be discharged.
[0016] Beneficial effects: in the utility model, a kind of for salt making's gas-fired boiler flue gas waste heat depth recovery system, by condensing mechanism, when steam that enters evaporation box is conveyed by condensing pipe assembly, condensing pipe assembly can realize the cooling of steam, so that the water in steam forms condensate water, then condensate water can flow into first annular pipe;
[0017] In the utility model, a kind of for salt making's gas-fired boiler flue gas waste heat depth recovery system, by conveying mechanism, after condensate water flows into first annular pipe, condensate water can be conveyed to second annular pipe by multiple drain pipes, then drain pipe is connected with the pipeline for conveying condensate water, condensate water can be conveyed at this time, so that condensate water can be conveniently collected and used;
[0018] In the process of evaporating brine by steam, the cooled steam can be cooled, and the steam formed by brine can be cooled to form condensate water, so that condensate water can be conveniently conveyed for recycling, so it has good practicability. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The utility model provides a kind of for the overall structure three-dimensional schematic view of depth recovery system of flue gas waste heat of gas-fired boiler for salt making;
[0020] Figure 2 The utility model provides a kind of for the evaporation tank and evaporation pot connecting structure three-dimensional schematic view of depth recovery system of flue gas waste heat of gas-fired boiler for salt making;
[0021] Figure 3 The utility model provides a kind of for the first gas pipe, second gas pipe, spiral condensing pipe and installation pipe connecting structure three-dimensional schematic view of depth recovery system of flue gas waste heat of gas-fired boiler for salt making;
[0022] Figure 4 The utility model provides a kind of for the drain pipe, exhaust elbow and one-way valve connecting structure three-dimensional schematic view of depth recovery system of flue gas waste heat of gas-fired boiler for salt making.
[0023] In the drawing: 1, evaporation tank;2, evaporation pot;3, butt joint ring;4, cover plate;5, first gas pipe;6, second gas pipe;7, first connecting box;8, spiral condensing pipe;9, second connecting box;10, installation pipe;11, first annular pipe;12, drain pipe;13, second annular pipe;14, water outlet pipe;15, exhaust elbow;16, one-way valve;17, gas inlet pipe;18, valve. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0025] Embodiment 1: refer to Figures 1-4 A recovery system includes evaporation tank 1, evaporation tank 1 as the main structure of the whole recovery system, to ensure that it has good sealing and high temperature resistance, evaporation pot 2 is welded in evaporation tank 1, evaporation pot 2 is used to hold the brine to be evaporated, gas inlet pipe 17 is welded on the inner wall of the bottom of one side of evaporation tank 1, gas inlet pipe 17 is used to be connected with external steam conveying pipeline, so as to introduce external steam into evaporation tank 1, valve 18 is installed in gas inlet pipe 17, the handle of valve 18 extends above gas inlet pipe 17, to facilitate the operator to control the flow of steam.
[0026] Butt joint ring 3 is welded on the top opening of evaporation tank 1, cover plate 4 is tightly clamped in butt joint ring 3, cover plate 4 is used to cover evaporation pot 2, and cover plate 4 is clamped with butt joint ring 3, so that the evaporated steam can be prevented from drifting randomly during the evaporation of brine, so that the evaporated steam can be conveniently collected.
[0027] Next, a condensing mechanism is installed, which includes a first annular pipe 11 sleeved on the evaporation box 1 and welded with the evaporation box 1, a plurality of condensing pipe assemblies are installed on the inner wall of the top of the first annular pipe 11 at equal intervals, the top of the condensing pipe assembly extends into the evaporation box 1 and is fixedly connected with the inner wall of the top of the evaporation box 1, the condensing pipe assembly includes a first gas outlet pipe 5 penetrating through the inner wall of the top of the evaporation box 1 and welded with the inner wall of the top of the evaporation box 1, the bottom end of the first gas outlet pipe 5 is welded with a first connecting box 7, the inner wall of the bottom of the first connecting box 7 is welded with a spiral condensing pipe 8, the bottom end of the spiral condensing pipe 8 is welded with a second connecting box 9, the spiral condensing pipe 8 is communicated with the second connecting box 9, the bottom end of the second connecting box 9 is welded with a mounting pipe 10, the bottom end of the mounting pipe 10 extends into the first annular pipe 11 and is welded with the inner wall of the top of the first annular pipe 11, after the steam in the evaporation box 1 flows into the first gas outlet pipe 5, it will flow into the spiral condensing pipe 8, since the spiral condensing pipe 8 is spiral, it can prolong the conveying area of the steam during conveying the steam, so that the steam can be cooled to condensate water, and the condensate water and the gas will flow into the first annular pipe 11, and the first annular pipe 11 is connected with a conveying mechanism to convey the cooled condensate water.
[0028] The second gas outlet pipe 6 is welded through the inner wall of the first gas outlet pipe 5, the top end of the second gas outlet pipe 6 extends into the butt joint ring 3 and is fixedly connected with the inner wall of one side of the butt joint ring 3, during the process of heating and evaporating the brine, the steam formed in the evaporation pot 2 can be conveyed into the first gas outlet pipe 5 through the second gas outlet pipe 6, and then can be cooled through the spiral condensing pipe 8, so that the steam formed by the brine can be cooled.
[0029] Then, a conveying mechanism is installed, which includes a plurality of drain pipes 12 welded at equal intervals on the inner wall of one side of the first annular pipe 11, the bottom end of each of the plurality of drain pipes 12 extends below the first annular pipe 11 and is welded with a same second annular pipe 13, the inner wall of one side of the second annular pipe 13 is welded through with a water outlet pipe 14, the water outlet pipe 14 is used to be connected with an external conveying pipe for conveying condensate water, after the condensate water flows into the first annular pipe 11, it can be conveyed into the second annular pipe 13 through the plurality of drain pipes 12, and after the drain pipe 12 is connected with the pipe for conveying the condensate water, the condensate water can be conveyed, so that the condensate water can be conveniently collected and used.
[0030] The present application can be used in the technical field of salt making equipment, and can also be used in other fields applicable to the present application.
[0031] Example 2: Reference Figure 4The improved example one is a deep recovery system of waste heat of flue gas of a gas boiler for salt making, which is applied to the technical field of salt making equipment, a one-way valve 16 is fixedly installed at the top end of an exhaust elbow 15 which is welded through the inner wall of a drain pipe 12, after steam is cooled, the gas part in the steam also enters the first annular pipe 11 and then enters the drain pipe 12, then the gas flows into the exhaust elbow 15, at this time, the valve core in the one-way valve 16 moves under the action of the gas pressure, so that the one-way valve 16 is in the flow-through state, so that the cooled gas can be discharged.
[0032] The drawings in the specification of the present application are only of a schematic nature, the size and shape of each component shown are not actual limits, but only a schematic representation. In the actual implementation process, each component can be reasonably configured and adjusted according to specific needs and actual conditions.
[0033] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A system for deep recovery of flue gas waste heat of a gas-fired boiler for salt production, comprising an evaporation tank (1) in which an evaporation kettle (2) is welded, characterized in that, A gas inlet pipe (17) is welded through the bottom inner wall of one side of the evaporation box (1), the gas inlet pipe (17) is used for connecting with an external steam conveying pipeline, a valve (18) is installed in the gas inlet pipe (17), the handle of the valve (18) extends above the gas inlet pipe (17), and the recycling system further comprises: A condensing mechanism is installed on the evaporation box (1), the top of the condensing mechanism extends into the evaporation box (1), and the condensing mechanism is used for cooling the steam discharged from the evaporation box (1); A conveying mechanism is installed on the condensing mechanism, and the conveying mechanism is used for conveying the cooled condensed water.
2. A system for deep recovery of flue gas waste heat from a gas-fired boiler for salt production according to claim 1, characterized in that, A butt joint ring (3) is welded at the top opening of the evaporation box (1), and a cover plate (4) is tightly clamped in the butt joint ring (3), and the cover plate (4) is used for covering the evaporation pot (2).
3. A system for deep recovery of flue gas waste heat from a gas-fired boiler for salt production according to claim 1, characterized in that, The condensing mechanism comprises a first annular pipe (11) sleeved on the evaporation box (1) and welded with the evaporation box (1), a plurality of condensing pipe assemblies are installed at equal intervals on the top inner wall of the first annular pipe (11), the top of the condensing pipe assembly extends into the evaporation box (1) and is fixedly connected with the top inner wall of one side of the evaporation box (1), and the first annular pipe (11) is connected with the conveying mechanism.
4. A system for deep recovery of flue gas waste heat from a gas-fired boiler for salt production according to claim 3, characterized in that, The condensing pipe assembly comprises a first gas outlet pipe (5) penetrating through the top inner wall of one side of the evaporation box (1) and welded with the top inner wall of one side of the evaporation box (1), a first connecting box (7) is welded at the bottom end of the first gas outlet pipe (5), a spiral condensing pipe (8) is welded on the bottom inner wall of the first connecting box (7), a second connecting box (9) is welded at the bottom end of the spiral condensing pipe (8), the spiral condensing pipe (8) is communicated with the second connecting box (9), and a mounting pipe (10) is welded through the bottom inner wall of the second connecting box (9). The bottom end of the mounting pipe (10) extends into the first annular pipe (11) and is welded with the top inner wall of the first annular pipe (11).
5. A system for deep recovery of flue gas waste heat from a gas-fired boiler for salt production according to claim 4, characterized in that, A second gas outlet pipe (6) is welded through the inner wall of the first gas outlet pipe (5), the top end of the second gas outlet pipe (6) extends into the butt joint ring (3) and is fixedly connected with the inner wall of one side of the butt joint ring (3).
6. A system for deep recovery of flue gas waste heat from a gas-fired boiler for salt production according to claim 1, characterized in that, The conveying mechanism comprises a plurality of drain pipes (12) welded at equal intervals on the inner wall of one side of the first annular pipe (11), the bottom ends of the drain pipes (12) extend below the first annular pipe (11) and are welded with a same second annular pipe (13), a water outlet pipe (14) is welded through the inner wall of one side of the second annular pipe (13), and the water outlet pipe (14) is used for connecting with an external conveying pipeline for conveying condensed water.
7. A system for deep recovery of flue gas waste heat from a gas-fired boiler for salt production according to claim 6, characterized in that, A gas exhaust elbow (15) is welded through the inner wall of the drain pipe (12), and a one-way valve (16) is fixedly installed at the top end of the gas exhaust elbow (15).