2020 is approaching. In 2019, the chemical industry experienced an extremely extraordinary year. Safety accidents in the chemical industry occurred one after another, which set off a heavy alarm for the entire industry. 2019 was even jokingly called the “birth year” of the chemical industry. “. Regardless of the industry’s economic operation or safety and environmental protection situation, it faces severe challenges and is also under tremendous pressure from public opinion.
The top ten safety accidents in the chemical industry in 2019 resulted in a total of 112 deaths and 717 injuries. These bloody figures are a wake-up call for the chemical industry.
1. “3.3” Dazhou, Sichuan Hydrogen sulfide poisoning accident
At around 5:10 on March 3, a hydrogen sulfide gas poisoning accident occurred in the phosphoric acid filling area of the logistics department of Wengfu Dazhou Chemical Co., Ltd., causing 3 One person died and three were injured.
The direct cause of the accident was that the transport truck of Navigation Company (the transportation service provider of Wengfu Dazhou Chemical Co., Ltd.) still had residual liquid after unloading the liquid sodium sulfide. When the transport truck escort used low-pressure steam to purge and clean the steam tank inside the transport truck tank, the sodium sulfide remaining in the vehicle flowed into the ditch along with the steam tank sewage, and chemically reacted with the phosphoric acid remaining in the ditch to produce hydrogen sulfide gas. , causing inhalation poisoning to nearby people.
2. “3.21” extremely large explosion accident in Xiangshui Tianjiayi, Yancheng, Jiangsu Province
At about 14:48 on March 21, a particularly large explosion occurred at Tianjiayi Chemical Co., Ltd. in the Xiangshui County Ecological Chemical Park in Yancheng City, Jiangsu Province, causing 78 deaths, 76 serious injuries, and 640 people being hospitalized. The direct economic loss was 1.986 billion yuan. On November 15, the Ministry of Emergency Management issued an accident investigation report, opening cases for investigation and taking criminal coercive measures against 44 people involved, and severely holding 61 public officials suspected of violations of disciplines and laws to account.
After the accident, Xiangshui Chemical Industry Park was completely closed, and a rectification and improvement plan for the chemical industry in Jiangsu Province was introduced. The General Office of the Jiangsu Provincial Party Committee issued the “Jiangsu Province Chemical Industry Safety and Environmental Protection Improvement Plan”, proposing that the province should significantly reduce the number of chemical enterprises in the areas along the river, cancel the positioning of some chemical industry parks, and reduce the number of chemical industry parks.
Later on, Shandong, Zhejiang and other places also introduced rectification and improvement plans for the chemical industry, setting detailed requirements for the number of chemical companies in the region and park specifications.
3. “3.25” explosion and fire accident in Zhaoyuan, Yantai, Shandong Province
On March 25, an explosion and fire occurred at Zhaoyuan Jinheng Chemical Co., Ltd. located in Xinzhuang Town, Zhaoyuan City, Yantai, resulting in one death and four injuries.
Preliminary investigation and analysis showed that the direct cause of the accident was: water leakage from the jacket of the tetraphenyltin reactor or the raw material tin tetrachloride or solvent The water content of xylene exceeds the standard, and when it encounters incompletely reacted metallic sodium, it reacts violently to produce hydrogen, which forms an explosive mixed gas with air. When it encounters ignition sources such as static electricity, it deflagrates and catches fire.
4. “4·24” Inner Mongolia Dongxing Chemical Explosion Accident
At 2:34 on April 24, the vinyl chloride gas cabinet of Inner Mongolia Yidong Group Dongxing Chemical Co., Ltd. located in the industrial park of Zhuozi County, Ulanqab City leaked and spread to the calcium carbide cooling workshop, and exploded when encountering a fire source. , causing 4 deaths, 3 serious injuries, 33 minor injuries, and direct economic losses of 41.54 million yuan.
The direct cause is that the local wind reached level 7 on the night of the accident. Due to the strong wind and the failure to conduct a comprehensive overhaul in accordance with regulations, the operator did not discover it in time. The gas tank is stuck. If you still increase the return flow of the compressor according to the conventional operation method, the amount of air entering the gas tank will increase. In addition, if the gas tank is adjusted too fast, the vinyl chloride will break through the annular water seal and leak, spread to low-lying areas, and explode when encountering a fire source.
5. “5.25” oil tank fire accident in Beilun District, Ningbo
At around 15:10 on May 25, an oil tank explosion accident occurred at Ningbo Beihai Fuel Chemical Co., Ltd. located at No. 276, Xinfeng Village, Baifeng Street, Beilun District, Ningbo City, killing two people.
The direct cause is that there is a small amount of light cycle oil remaining in the storage tank, and an explosive mixed gas has formed in the tank and the exhaust gas recovery pipeline. Space, when Lei Yinbin and Ma Zhenglong were reinforcing the exhaust gas recovery pipeline on the top of the tank, they started welding and caused the tank to explode.
6. “6·28” suffocation and explosion accident in Bengbu, Anhui Province
At about 18:00 on June 28, a suffocation and deflagration accident occurred at the Huaishang Branch of Anhui Maiqi Chemical Co., Ltd. in Mohekou Industrial Park, Huaishang District, Bengbu City. The accident resulted in 2 deaths and 9 injuries.
When the accident occurred, the company violated regulations and organized workers to implement restricted spaces operation, causing the operator to suffocate and become trapped, and a deflagration occurred during the rescue process. The detailed cause of the accident is under further investigation.
7. “7.13” explosion accident in Bengbu, Anhui Province
At about 10:20 on July 13, Anhui Bayi Chemical Co., Ltd. is located in Yuhui District, Bengbu City, Anhui Province. A blast accident occurred during production shutdown for inspection and maintenance. The accident resulted in one death and one serious injury.
After preliminary analysis by experts, the accident occurred The possible reasons are: There is hydrogen in the No. 3 raw material kettle. When the external construction workers opened the manhole cover, the hydrogen mixed with air and was hit by iron tools to produce sparks or the static electricity of the human body caused an explosion. The shock wave caused a person to die. The person died on the working platform at the hole, and one person fell to the lower platform with a height difference of about 2 meters and was injured.
8. ” 7·19″ serious accident in Sanmenxia, Henan Province
At around 17:45 on July 19, 2019, the air separation in the C set of Yima Gasification Plant of Henan Gas Group in Sanmenxia City, Henan Province The device exploded, causing 15 deaths and 16 serious injuries.
The direct cause of the accident was the leakage of the cold box of the air separation unit If it is not handled in time, a “sand explosion” occurs (the air separation cold box leaks, and a large amount of low-temperature liquid will be stored in the pearlescent sand in the insulation layer. When the low-temperature liquid evaporates rapidly, the outer shell of the cold box will be cracked, and the gas will entrain a large amount of pearlescent sand and spray out. phenomenon), which in turn caused the collapse of the cold box, causing the nearby 500m3 liquid oxygen storage tank to rupture, causing a large amount of liquid oxygen to leak rapidly, and the surrounding combustibles to explode and burn under liquid oxygen or oxygen-enriched conditions, causing a large number of casualties to surrounding personnel. Accident The specific reasons are under further investigation.
9. “7.24” Huludao fire accident in Liaoning Province
7 At around 11:00 on March 24, a fire accident occurred in the second workshop of Huludao Tianqi Shengye Chemical Co., Ltd. The accident caused a total of 2 people to be seriously injured. They were sent to the hospital for treatment, but died after the rescue failed.
It is understood that Huludao Tianqi Shengye Chemical Co., Ltd. was registered and established in 2010 and is a company that produces fine chemical intermediates comprehensive private enterprise. It covers an area of 240,000 square meters and has 190 employees. It mainly produces p-chloroaniline, p-chloroaniline hydrochloride and other products.
10. “10.15” Guangxi Lanke New Materials Accident
At 11:15 on October 15, a reactor explosion occurred at Guangxi Lanke New Materials Co., Ltd. at No. 3, Eastern Section of the Northern Industrial Park, Luchuan County, Yulin City, Guangxi. The accident resulted in 4 deaths and 8 injuries.
After investigation, around 8:30 a.m. that day, the company went into trial production. The main raw materials were phenol and formaldehyde. When phenolic resin products were generated through chemical reactions, the production At about 11:10, the reactor exploded, causing casualties and property losses.
It is understood that the explosion occurred in the reactor in the resin synthesis reaction workshop. The reactor is mainly used to synthesize phenolic resin from formaldehyde and phenol. The reserves of raw materials and semi-finished products in the reactor are about About 5 tons.
A total of 112 people were killed and 717 injured in the above-mentioned ten major chemical industry accidents. Other accidents that have not been counted have also caused varying degrees of casualties. The number of casualties in the chemical industry in 2019 was nearly a thousand!
2019 is destined to be extraordinary for the chemical industry In the past year, frequent accidents have not only brought devastating economic losses and even suspension of production and operations to enterprises, but also brought irreparable personal injuries and psychological shadow to the casualties and their families, and caused extremely negative consequences to society. Influence.
According to statistics, the cause of accidents is rarely force majeure, but mostly controllable reasons such as aging equipment, inadequate inspections, improper operation of personnel, etc. In addition, the failure to implement key tasks of regulatory authorities in some regions, weak awareness of safety red lines, and lax control of source access also indirectly contributed to the occurrence of accidents. Relaxed thinking, taking chances, thinking that everyone is like this and there will be no accidents, and that there must be no problem if it happens like this every time, being perfunctory, being careless, and not paying enough attention to accidents and safety. These are all common problems. It’s undesirable.
At the end of the year and the beginning of the year, chemical and hazardous chemical accidents are more likely to occur. The accident exposed that the company had a weak safety awareness, failed to seriously learn lessons from similar accidents, and lost control of its management. , serious shortage of emergency response capabilities and other prominent problems. We would like to remind all major enterprises that safety is not just a slogan, but should be implemented in action. To nip risks in the bud, to nip risks in the cradle, and to do a good job in safety work is to be responsible for oneself, the enterprise, and society. </p
