CN110980629A - Liquid chlorine unloading crane pipe tail gas recycling process - Google Patents
Liquid chlorine unloading crane pipe tail gas recycling process Download PDFInfo
- Publication number
- CN110980629A CN110980629A CN201911424910.1A CN201911424910A CN110980629A CN 110980629 A CN110980629 A CN 110980629A CN 201911424910 A CN201911424910 A CN 201911424910A CN 110980629 A CN110980629 A CN 110980629A
- Authority
- CN
- China
- Prior art keywords
- chlorine
- tail gas
- crane pipe
- liquid
- unloading crane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
- B67D7/54—Filling nozzles with means for preventing escape of liquid or vapour or for recovering escaped liquid or vapour
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/108—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/202—Single element halogens
- B01D2257/2025—Chlorine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a liquid chlorine unloading crane pipe tail gas recycling process, which comprises the following steps: s1, introducing a liquid chlorine unloading crane pipe exhaust tail gas pipeline into a sulfur monochloride cooling tank; s2, after the vehicle is unloaded, starting a vacuum pump to pump the tail gas chlorine pipeline to be negative pressure, and exhausting the gas to a vacuum circulation buffer tank through a cooling tank; s3, starting a circulating pump to circulate so that the sulfur monochloride and the chlorine react to prepare the sulfur dichloride. The temperature in the vacuum circulation buffer tank is controlled to be 75-85 ℃. The liquid level height of the liquid chlorine in the vacuum circulation buffer tank is 0.8-1.2 m. According to the invention, the raw material sulfur dichloride for preparing the thionyl chloride is generated by reacting chlorine and sulfur monochloride, so that the chlorine in the recovered waste gas can be effectively reduced, the aim of safe production is fulfilled, the chlorine is recycled, the raw material is saved to the maximum extent, and the production cost is reduced.
Description
Technical Field
The invention relates to a process for recycling tail gas of a liquid chlorine unloading crane pipe.
Background
The loading arm is a special device in the process of loading and unloading fluid in the petrochemical industry, and is also called a fluid loading and unloading arm. The rotary joint is connected with the rigid pipeline and the elbow to realize the movable equipment for transmitting liquid media between trains, automobile tank cars and trestle storage and transportation pipelines, so as to replace the old hose connection, and the rotary joint has the characteristics of high safety, flexibility, long service life and the like. The product meets the GB 50074-2002 oil depot design Specification standard, is ideal special equipment in an oil receiving and dispatching process, and can be widely used for receiving and dispatching various liquid raw materials in the chemical industry and other industries.
A large amount of chlorine generated in the chemical preparation process is discharged through an unloading crane pipe, most of the chlorine in the existing process is absorbed and treated through a tail gas alkali liquor absorption tower, and if the chlorine can be effectively recycled, the production cost of enterprises is reduced, the pollution to the environment is reduced, and green and friendly chemistry is established.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a process for recycling tail gas of a liquid chlorine unloading crane pipe.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention discloses a liquid chlorine unloading crane pipe tail gas recycling process, which comprises the following steps:
s1, introducing a liquid chlorine unloading crane pipe exhaust tail gas pipeline into a sulfur monochloride cooling tank;
s2, after the vehicle is unloaded, starting a vacuum pump to pump the tail gas chlorine pipeline to be negative pressure, and exhausting the gas to a vacuum circulation buffer tank through a cooling tank;
s3, starting a circulating pump to circulate so that the sulfur monochloride and the chlorine react to prepare the sulfur dichloride.
Preferably, the temperature in the vacuum circulation buffer tank is controlled to be 75-85 ℃.
Preferably, the liquid level height of the liquid chlorine in the vacuum circulation buffer tank is 0.8-1.2 m.
The invention has the following beneficial effects:
according to the invention, the raw material sulfur dichloride for preparing the thionyl chloride is generated by reacting chlorine and sulfur monochloride, so that the chlorine in the recovered waste gas can be effectively reduced, the aim of safe production is fulfilled, the chlorine is recycled, the raw material is saved to the maximum extent, and the production cost is reduced.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
A process for recycling tail gas of a liquid chlorine unloading crane pipe comprises the following steps:
s1, introducing a liquid chlorine unloading crane pipe exhaust tail gas pipeline into a sulfur monochloride cooling tank;
s2, after the vehicle is unloaded, starting a vacuum pump to pump the tail gas chlorine pipeline to be negative pressure, and exhausting the gas to a vacuum circulation buffer tank through a cooling tank;
s3, starting a circulating pump to circulate so that the sulfur monochloride and the chlorine react to prepare the sulfur dichloride.
The reaction principle is as follows: s2Cl2+ Cl2 → 2SCl 2SCl 2+ Cl2+ SO2 → 2SOCl2
The reaction temperature is a very important index, and if the temperature is too low, the reaction amount of the sulfur monochloride and the chlorine is small or the chlorine does not react, so that the chlorine enters a reactor, and the synthetic reaction is influenced by the distorted ratio; if the temperature is too high, the sulfur dichloride is excessive, and the chlorine is less, so that the quality of a crude product is poor. Therefore, the temperature in the vacuum circulation buffer tank is controlled to be 75-85 ℃.
The height of the liquid level is also an important indicator. The liquid level is too low, the chlorine and the sulfur monochloride react less, the synthetic reaction is influenced, the liquid level is too high, the reaction speed of the chlorine and the sulfur monochloride is slow, and the synthetic reaction is also influenced. Therefore, the liquid level of the liquid chlorine in the vacuum circulation buffer tank is 0.8-1.2 m.
According to the invention, the raw material sulfur dichloride for preparing the thionyl chloride is generated by reacting chlorine and sulfur monochloride, so that the chlorine in the recovered waste gas can be effectively reduced, the aim of safe production is fulfilled, the chlorine is recycled, the raw material is saved to the maximum extent, and the production cost is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The process for recycling tail gas of the liquid chlorine unloading crane pipe is characterized by comprising the following steps:
s1, introducing a liquid chlorine unloading crane pipe exhaust tail gas pipeline into a sulfur monochloride cooling tank;
s2, after the vehicle is unloaded, starting a vacuum pump to pump the tail gas chlorine pipeline to be negative pressure, and exhausting the gas to a vacuum circulation buffer tank through a cooling tank;
s3, starting a circulating pump to circulate so that the sulfur monochloride and the chlorine react to prepare the sulfur dichloride.
2. The liquid chlorine unloading crane pipe tail gas recycling process as claimed in claim 1, wherein the temperature in the vacuum circulation buffer tank is controlled to be 75-85 ℃.
3. The process for recycling tail gas of a liquid chlorine unloading crane pipe as claimed in claim 1, wherein the liquid level of the liquid chlorine in the vacuum circulating buffer tank is 0.8-1.2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424910.1A CN110980629A (en) | 2019-12-31 | 2019-12-31 | Liquid chlorine unloading crane pipe tail gas recycling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424910.1A CN110980629A (en) | 2019-12-31 | 2019-12-31 | Liquid chlorine unloading crane pipe tail gas recycling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110980629A true CN110980629A (en) | 2020-04-10 |
Family
ID=70080442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911424910.1A Pending CN110980629A (en) | 2019-12-31 | 2019-12-31 | Liquid chlorine unloading crane pipe tail gas recycling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110980629A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101099915A (en) * | 2006-07-05 | 2008-01-09 | 山东凯盛生物化工有限公司 | Technology for treating thionyl chloride tail gas |
| CN103043620A (en) * | 2012-12-31 | 2013-04-17 | 山东凯盛新材料股份有限公司 | Method for recycling tail gas during thionyl chloride preparation |
| CN203810036U (en) * | 2014-04-28 | 2014-09-03 | 中国成达工程有限公司 | Automatic loading system of leakage-free loading arms of liquefied chlorine tank truck |
| CN104108686A (en) * | 2014-07-31 | 2014-10-22 | 江西世龙实业股份有限公司 | Pressure-relief discharge, absorption, treatment and recycling method in production process of thionyl chloride |
| CN106185809A (en) * | 2016-07-04 | 2016-12-07 | 汇智工程科技有限公司 | The method and device that in the production of a kind of thionyl chloride, chlorine efficiently utilizes |
-
2019
- 2019-12-31 CN CN201911424910.1A patent/CN110980629A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101099915A (en) * | 2006-07-05 | 2008-01-09 | 山东凯盛生物化工有限公司 | Technology for treating thionyl chloride tail gas |
| CN103043620A (en) * | 2012-12-31 | 2013-04-17 | 山东凯盛新材料股份有限公司 | Method for recycling tail gas during thionyl chloride preparation |
| CN203810036U (en) * | 2014-04-28 | 2014-09-03 | 中国成达工程有限公司 | Automatic loading system of leakage-free loading arms of liquefied chlorine tank truck |
| CN104108686A (en) * | 2014-07-31 | 2014-10-22 | 江西世龙实业股份有限公司 | Pressure-relief discharge, absorption, treatment and recycling method in production process of thionyl chloride |
| CN106185809A (en) * | 2016-07-04 | 2016-12-07 | 汇智工程科技有限公司 | The method and device that in the production of a kind of thionyl chloride, chlorine efficiently utilizes |
Non-Patent Citations (1)
| Title |
|---|
| 苗红振等: "氯化亚砜生产中影响二氧化硫消耗的因素 ", 《氯碱工业》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |