CN110849192A - Method for recycling byproduct steam of hydrogen chloride synthesis furnace - Google Patents
Method for recycling byproduct steam of hydrogen chloride synthesis furnace Download PDFInfo
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- CN110849192A CN110849192A CN201911157808.XA CN201911157808A CN110849192A CN 110849192 A CN110849192 A CN 110849192A CN 201911157808 A CN201911157808 A CN 201911157808A CN 110849192 A CN110849192 A CN 110849192A
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- Prior art keywords
- steam
- water
- hydrogen chloride
- heated
- pressure
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/01—Chlorine; Hydrogen chloride
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/003—Feed-water heater systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a method for recycling byproduct steam of a hydrogen chloride synthesis furnace, which specifically comprises the following steps: step 1, generating steam by a hydrogen chloride synthesis furnace, and conveying the steam to a steam distribution platform by decompressing equipment; step 2, stabilizing the pressure of the steam by the steam distribution platform, and distributing and conveying the stabilized steam to the steam-water type heat exchange equipment to heat the steam-water type heat exchange equipment; and 3, conveying water to be heated into the steam-water type heat exchange equipment, heating the water to be heated by the steam-water type heat exchange equipment, conveying the heated water to a boiler water replenishing system for utilization through a pipeline after the heated water is heated, cooling and condensing the steam into condensed water through the steam-water type heat exchange equipment, discharging the condensed water into a drain tank, and conveying the condensed water to the boiler water replenishing system for reuse through the drain tank through a pipeline. The method for recycling the byproduct steam of the hydrogen chloride synthesis furnace can recycle the steam generated in the hydrogen chloride synthesis process.
Description
Technical Field
The invention belongs to the technical field of energy conservation and consumption reduction, and relates to a method for recycling byproduct steam of a hydrogen chloride synthesis furnace.
Background
The synthesis of hydrogen chloride in the polyvinyl chloride production process can release a large amount of chemical heat, the part of heat needs to be removed in time, the hydrogen chloride synthesis equipment can be damaged if the part of heat is not removed in time, pure water is used as a heat exchange medium in the hydrogen chloride synthesis process of the hydrogen chloride synthesis equipment, the heat generated in the chemical reaction process is taken away, the temperature of the pure water is increased after the pure water absorbs heat in the hydrogen chloride synthesis equipment, the boiling point temperature can be reached, a large amount of saturated steam is generated, superheated steam is generated after the pure water further absorbs heat, the degree of superheat is about 10 ℃, the part of steam carries a large amount of water resources and heat, and a large amount of steam and water loss can be caused if.
Disclosure of Invention
The invention aims to provide a method for recycling byproduct steam of a hydrogen chloride synthesis furnace, which can recycle the steam generated in the hydrogen chloride synthesis process.
The invention adopts the technical scheme that a method for recycling byproduct steam of a hydrogen chloride synthesis furnace specifically comprises the following steps:
step 1, generating steam by a hydrogen chloride synthesis furnace, and conveying the steam to a steam distribution platform by decompressing equipment;
step 2, stabilizing the pressure of the steam by the steam distribution platform, and distributing and conveying the stabilized steam to the steam-water type heat exchange equipment to heat the steam-water type heat exchange equipment;
and 3, conveying water to be heated into the steam-water type heat exchange equipment, heating the water to be heated by the steam-water type heat exchange equipment, conveying the heated water to a boiler water replenishing system for utilization through a pipeline after the heated water is heated, cooling and condensing the steam into condensed water through the steam-water type heat exchange equipment, discharging the condensed water into a drain tank, and conveying the condensed water to the boiler water replenishing system for reuse through the drain tank through a pipeline.
The present invention is also characterized in that,
the pressure reducing equipment in the step 1 is a pressure regulating valve, and the pressure regulating valve is arranged at a steam discharge port of the hydrogen chloride synthesis furnace.
The pressure of the pressure regulating valve is set to 0.2 to 0.25 MPa.
And 2, specifically, the pressure stabilization is realized by arranging a pressure stabilization valve on the steam distribution table, and regulating and stabilizing the pressure of the steam by the steam distribution table through the pressure stabilization valve.
And 3, the water to be heated in the step 3 is desalted water to be heated, and the steam-water type heat exchange equipment is a desalted water heater.
The invention has the following beneficial effects: the invention provides a method for recycling byproduct steam of a hydrogen chloride synthesis furnace, which is characterized in that the byproduct steam of the hydrogen chloride synthesis furnace is conveyed into a steam-water type heat exchange device to heat water to be heated instead of a heat source of the original steam-water type heat exchange device, so that a boiler is supplemented with water, cold water after steam liquefaction is recycled by a drain tank and reused in a boiler water supplementing system, the cyclic utilization of the steam is realized, the waste of water resources and heat caused by the evacuation of the byproduct steam of the hydrogen chloride synthesis furnace is avoided, the effective utilization rate of the water resources and the heat is improved, and the coal consumption of the boiler and the steam-water type heat exchange device for power generation is saved.
Drawings
FIG. 1 is a flow chart of a method for recycling byproduct steam of a hydrogen chloride synthesis furnace.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a method for recycling byproduct steam of a hydrogen chloride synthesis furnace, which is shown by referring to figure 1 and specifically comprises the following steps:
step 1, generating steam by a hydrogen chloride synthesis furnace, and conveying the steam to a steam distribution platform by decompressing equipment;
step 2, stabilizing the pressure of the steam by the steam distribution platform, and distributing and conveying the stabilized steam to the steam-water type heat exchange equipment to heat the steam-water type heat exchange equipment;
and 3, conveying water to be heated into the steam-water type heat exchange equipment, heating the water to be heated by the steam-water type heat exchange equipment, conveying the heated water to a boiler water replenishing system for utilization through a pipeline after the heated water is heated, cooling and condensing the steam into condensed water through the steam-water type heat exchange equipment, discharging the condensed water into a drain tank, and conveying the condensed water to the boiler water replenishing system for reuse through the drain tank through a pipeline.
Further, the pressure reduction device in the step 1 is a pressure regulating valve, and the pressure regulating valve is arranged at a steam discharge port of the hydrogen chloride synthesis furnace.
Further, the pressure of the pressure regulating valve is set to 0.2 to 0.25 MPa.
Further, the pressure stabilization in the step 2 is specifically that a pressure stabilization valve is arranged on the steam distribution table, and the steam distribution table adjusts and stabilizes the pressure of the steam through the pressure stabilization valve.
Further, the water to be heated in the step 3 is desalted water to be heated, and the steam-water type heat exchange equipment is a desalted water heater.
Example 1
A method for recycling byproduct steam of a hydrogen chloride synthesis furnace specifically comprises the following steps: 15000m synthesized by hydrogen chloride synthesis furnace3Generating 15t of 135 ℃ low-pressure byproduct steam by hydrogen chloride gas, reducing the pressure of the low-pressure byproduct steam to 0.25MPa through a pressure regulating valve, and conveying the low-pressure byproduct steam to a steam distribution table; the steam distribution table stabilizes the pressure of the low-pressure byproduct steam through a pressure stabilizing valve, conveys the pressure-stabilized low-pressure byproduct steam to a demineralized water heater, heats 100t/h demineralized water entering the demineralized water heater from 15 ℃ to 30 ℃, and conveys the heated demineralized water to a pot through a pipelineThe boiler water replenishing system is internally utilized, meanwhile, the condensed water with the steam condensation temperature of 50 ℃ and 15t/h is drained into the drain box, and the drain box conveys the condensed water to the boiler water replenishing system for reutilization through a pipeline.
Example 2
A method for recycling byproduct steam of a hydrogen chloride synthesis furnace specifically comprises the following steps: 10000m synthesized by hydrogen chloride synthetic furnace3Generating 10t of 135 ℃ low-pressure byproduct steam by hydrogen chloride gas, reducing the pressure of the low-pressure byproduct steam to 0.2MPa through a pressure regulating valve, and conveying the low-pressure byproduct steam to a steam distribution table; the steam distribution platform stabilizes the pressure of low-pressure byproduct steam through a pressure stabilizing valve, conveys the stabilized low-pressure byproduct steam to a demineralized water heater, heats 100t/h demineralized water entering the demineralized water heater from 15 ℃ to 25 ℃, conveys the heated demineralized water to a boiler water replenishing system through a pipeline for utilization, simultaneously discharges condensate water with the steam condensation temperature of 45 ℃ and 10t/h into a drain tank, and conveys the condensate water to the boiler water replenishing system through the pipeline for reuse.
Example 3
A method for recycling byproduct steam of a hydrogen chloride synthesis furnace specifically comprises the following steps: synthesis of 25000m in hydrogen chloride synthesis furnace3Generating 25t of 135 ℃ low-pressure byproduct steam by hydrogen chloride gas, reducing the pressure of the low-pressure byproduct steam to 0.25MPa through a pressure regulating valve, and conveying the low-pressure byproduct steam to a steam distribution table; the steam distribution platform stabilizes the pressure of low-pressure byproduct steam through a pressure stabilizing valve, conveys the stabilized low-pressure byproduct steam to a demineralized water heater, heats 100t/h demineralized water entering the demineralized water heater from 15 ℃ to 40 ℃, conveys the heated demineralized water to a boiler water replenishing system through a pipeline for utilization, simultaneously discharges condensate water with the steam condensation temperature of 45 ℃ and 25t/h into a drain tank, and conveys the condensate water to the boiler water replenishing system through the pipeline for reuse.
After the hydrogen chloride synthesis furnace byproduct steam recycling method of the embodiments 1 to 3 is used, it can be seen that the low-pressure steam emptying amount of the hydrogen chloride synthesis furnace byproduct is fully utilized, the cyclic utilization of the steam is realized, and the coal consumption of a boiler and a desalted water heater for power generation is saved.
Claims (5)
1. A method for recycling byproduct steam of a hydrogen chloride synthesis furnace is characterized by comprising the following steps: the method specifically comprises the following steps:
step 1, generating steam by a hydrogen chloride synthesis furnace, and conveying the steam to a steam distribution platform by decompressing equipment;
step 2, stabilizing the pressure of the steam by the steam distribution platform, and distributing and conveying the stabilized steam to the steam-water type heat exchange equipment to heat the steam-water type heat exchange equipment;
and 3, conveying water to be heated into the steam-water type heat exchange equipment, heating the water to be heated by the steam-water type heat exchange equipment, conveying the heated water to a boiler water replenishing system for utilization through a pipeline after the water to be heated is heated, cooling and condensing the steam into condensed water through the steam-water type heat exchange equipment, discharging the condensed water into a drain tank, and conveying the condensed water to the boiler water replenishing system for reuse through the drain tank.
2. The method for recycling the byproduct steam of the hydrogen chloride synthesis furnace according to claim 1, characterized in that: the pressure reducing device in the step 1 is a pressure regulating valve, and the pressure regulating valve is arranged at a steam discharge port of the hydrogen chloride synthesis furnace.
3. The method for recycling the byproduct steam of the hydrogen chloride synthesis furnace according to claim 2, characterized in that: the pressure of the pressure regulating valve is set to be 0.2-0.25 MPa.
4. The method for recycling the byproduct steam of the hydrogen chloride synthesis furnace according to claim 1, characterized in that: the pressure stabilization in the step 2 is specifically that a pressure stabilization valve is arranged on the steam distribution table, and the steam distribution table adjusts and stabilizes the pressure of the steam through the pressure stabilization valve.
5. The method for recycling the byproduct steam of the hydrogen chloride synthesis furnace according to claim 1, characterized in that: the water to be heated in the step 3 is desalted water to be heated, and the steam-water type heat exchange equipment is a desalted water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157808.XA CN110849192A (en) | 2019-11-22 | 2019-11-22 | Method for recycling byproduct steam of hydrogen chloride synthesis furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157808.XA CN110849192A (en) | 2019-11-22 | 2019-11-22 | Method for recycling byproduct steam of hydrogen chloride synthesis furnace |
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| Publication Number | Publication Date |
|---|---|
| CN110849192A true CN110849192A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911157808.XA Pending CN110849192A (en) | 2019-11-22 | 2019-11-22 | Method for recycling byproduct steam of hydrogen chloride synthesis furnace |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120255303A1 (en) * | 2010-12-20 | 2012-10-11 | Invensys Systems, Inc. | Feedwater Heater Control System for Improved Rankine Cycle Power Plant Efficiency |
| CN204756453U (en) * | 2015-06-23 | 2015-11-11 | 杭州天跃气体设备制造有限公司 | Multi -functional couple of return circuit pressure relief device |
| CN205744025U (en) * | 2016-06-15 | 2016-11-30 | 陆斌 | Power plant's unboiled water and demineralized water utilize exhaust steam heating system |
-
2019
- 2019-11-22 CN CN201911157808.XA patent/CN110849192A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120255303A1 (en) * | 2010-12-20 | 2012-10-11 | Invensys Systems, Inc. | Feedwater Heater Control System for Improved Rankine Cycle Power Plant Efficiency |
| CN204756453U (en) * | 2015-06-23 | 2015-11-11 | 杭州天跃气体设备制造有限公司 | Multi -functional couple of return circuit pressure relief device |
| CN205744025U (en) * | 2016-06-15 | 2016-11-30 | 陆斌 | Power plant's unboiled water and demineralized water utilize exhaust steam heating system |
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Application publication date: 20200228 |