CN213678279U - Reservoir is used in formaldehyde production - Google Patents

Abstract

The utility model belongs to the technical field of chemical production equipment, in particular to a liquid storage tank for formaldehyde production, which comprises a tank, wherein the top of the tank is provided with a ventilation transmission system, and the transmission system comprises a booster fan, 2 flame arresters connected in parallel, a breather valve, an external transmission buffer tank and an air buffer tank; two ends of each of the 2 flame arresters are respectively connected with an L-shaped guide pipe, the two L-shaped guide pipes on the same side are welded with a tee joint, and a control valve is arranged on each L-shaped guide pipe; the tee joint at the air outlet end of the flame arrester is communicated with an air inlet pipe of a fan, the tee joint at the air inlet end of the flame arrester is communicated with an external transmission buffer tank, an air inlet pipe of the external transmission buffer tank is communicated with an air outlet pipe of a breather valve, the air inlet pipe of the breather valve is communicated with an air buffer tank, and a ventilation pipe of the breather valve is communicated with a tank; the upper part of the air buffer tank is provided with an air inlet pipe, and the bottom of the air buffer tank is provided with a liquid discharge pipe. This methyl alcohol stock solution tank can carry the volatile methyl alcohol in the jar to production system in through the transmission system that takes a breath, reduces environmental pollution, has improved resource utilization, and is safe environmental protection.

Description

Reservoir is used in formaldehyde production

The technical field is as follows:

the utility model belongs to the technical field of chemical production equipment, concretely relates to reservoir is used in formaldehyde production.

Background art:

in the process of producing formaldehyde by chemical enterprises, the production raw material methanol of the formaldehyde is stored in a methanol tank for standby production, and the methanol in the methanol tank can volatilize a little. The methanol gas volatilized by the tank is discharged into the atmosphere through the breather valve, thereby not only polluting the environment, but also wasting resources. Especially, the large methanol tank with large volume has large methanol volatilization amount. If retrieve the production system with formaldehyde tank top exhaust methyl alcohol gas, then can improve resource utilization and rate, also avoided environmental pollution, safety ring protects. This requires a ventilation system on the top of the methanol tank for the delivery of the volatile gases. Therefore, it is necessary to design a formaldehyde material storage tank with a ventilation and transmission system.

The utility model has the following contents:

the methanol storage tank can convey methanol volatilized in the tank into a production system through the ventilation conveying system, so that the environmental pollution is reduced, the resource utilization rate is improved, the methanol storage tank is safe and environment-friendly, the structural design is reasonable, the methanol storage tank is economical and applicable, and the methanol storage tank is easy to popularize and use on a large scale.

The technical scheme adopted by the novel method is as follows: a liquid storage tank for formaldehyde production comprises a tank for storing methanol, wherein the top of the tank is provided with a ventilation transmission system, and the ventilation transmission system comprises a booster fan, 2 flame arresters, a breather valve, an external transmission buffer tank and an air buffer tank which are connected in parallel; two ends of the 2 flame arresters are respectively connected with the L-shaped guide pipes through flanges, the two L-shaped guide pipes on the same side are welded with the tee joint, and the 4L-shaped guide pipes are respectively provided with a control valve; the tee joint at the air outlet end of the flame arrester is communicated with an air inlet pipe of the booster fan through a flange, the tee joint at the air inlet end of the flame arrester is communicated with an air outlet pipe of an external transportation buffer tank through a flange, an air inlet pipe of the external transportation buffer tank is communicated with an air outlet pipe of a breather valve, the air inlet pipe of the breather valve is communicated with an air guide pipe at the lower part of the air buffer tank, and a ventilation pipe of the breather valve is communicated with the tank; the upper part of the air buffer tank is provided with an air inlet pipe, and the bottom of the air buffer tank is provided with a liquid discharge pipe for installing a ball valve.

Further, a bag type air filter is mounted on the air inlet pipe.

This neotype beneficial effect: the utility model provides a formaldehyde raw materials liquid storage tank jar that is equipped with transmission system of taking a breath, this methyl alcohol liquid storage tank jar can be with jar interior volatile methyl alcohol pass through transmission system of taking a breath and carry to production system in, reduce environmental pollution, improved resource utilization, safety ring protects, structural design is reasonable, and economy is suitable for, easily promotes on a large scale and uses.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the first embodiment;

FIG. 2 is a schematic view of a ventilation delivery system according to an embodiment;

FIG. 3 is a schematic structural view of the second embodiment;

FIG. 4 is a schematic structural view of the third embodiment;

FIG. 5 is a schematic structural diagram of the fourth embodiment.

The specific implementation mode is as follows:

example one

Referring to fig. 1 and 2, a liquid storage tank for formaldehyde production comprises a tank for storing methanol, wherein a ventilation and transmission system 1 is installed at the top of the tank, and the ventilation and transmission system 1 comprises a booster fan 11, 2 flame arresters 13 connected in parallel, a breather valve 18, an external transportation buffer tank 17 and an air buffer tank 19; two ends of the 2 flame arresters 13 are respectively connected with the L-shaped guide pipes 12 through flanges, the two L-shaped guide pipes 12 on the same side are welded with a tee 15, and control valves 16 are respectively arranged on the 4L-shaped guide pipes 12; a tee joint 15 at the air outlet end of a flame arrester 13 is communicated with an air inlet pipe of a booster fan 11 through a flange, the tee joint 15 at the air inlet end of the flame arrester 13 is communicated with an air outlet pipe 14 of an external delivery buffer tank 17 through a flange, an air inlet pipe of the external delivery buffer tank 17 is communicated with an air outlet pipe of a breather valve 18, an air inlet pipe of the breather valve 18 is communicated with an air guide pipe at the lower part of an air buffer tank 19, and a ventilation pipe of the breather valve 18 is communicated with a tank; an air inlet pipe 21 is arranged at the upper part of the air buffer tank 19, and a liquid discharge pipe for mounting a ball valve is arranged at the bottom of the air buffer tank.

After methanol in the methanol tank volatilizes, the volatile methanol gas takes a breath through the breather valve, the air enters the air buffer tank by the air inlet pipe and then takes a breath through the breather valve after being buffered, the moist air enters the buffer tank and then can be condensed into water drops, and accumulated water after long-term condensation and buffering can be discharged through the liquid discharge pipe at the bottom of the buffer tank. The volatilized methanol gas enters the outward transportation buffer tank through the air outlet pipe of the breather valve, and is conveyed out to a production system by a booster fan after passing through one flame arrester in the 2 flame arresters connected in parallel. The outward transportation buffer tank has a buffering effect, and when equipment such as a booster fan breaks down and cannot transmit methanol gas, methanol gas discharged by the breather valve is temporarily stored in the buffer tank. When equipment such as fan circuit trouble appeared, the spark arrester can avoid the emergence of tempering, safe and reliable, and the design of two spark arresters is convenient for overhaul and is changed one of them combiner. When one of the flame arrestors is serviced or replaced, the valves at both ends of the combiner are closed and only the other combiner is used to retard the flame.

The breather valve is preferably a breather valve with an air inlet and an air outlet connecting port produced by Zhejiang san jing valves, Sichuan Ringda mechanical equipment, Zhejiang Taiou valves, Yongjia three-department valves, Shanghai Biang valves and Zhejiang Xuan valves. The booster fan is preferably a booster fan or a high-pressure fan produced by Shanghai full-wind environmental protection science and technology, Inc., Wilma electromechanical, Inc., Guangzhou, and Wankang environmental protection science and technology, Inc., Shanghai. The flame arrestors are preferably flame arrestors produced by Stannumless Tianou petrochemical plant manufacturing, Shanghai Zhenghe Pump valve manufacturing, Shanghai Gaohanshi petrochemical plant manufacturing, Nanjing Zhuozi petrochemical plant manufacturing, and Shanghai Nanhai Stone storage tank facility technology, Inc. The methanol tank is preferably a tank or a liquid storage tank produced by Shandong province Soviet installation Limited, Jining City Xingheng mechanical equipment Limited, Hebeihuiwei environmental protection equipment Limited, Beijing Zhishengweisan chemical industry Limited, and Jining geodetic engineering installation Limited.

Example two

Referring to fig. 3, on the basis of the first embodiment, a bag type air filter 22 is installed on an air inlet pipe 21 for filtering and dedusting air entering an air buffer tank. The bag type air dust removing filter is preferably an air dust removing filter produced by Ming blue industry Co., Ltd, Guan county Tai Tae filter manufacturing Co., Ltd, future filter system Co., Ltd, Haxing purification equipment Co., Ltd, Kunshan and Zike purification equipment Co., Ltd, Tex.

EXAMPLE III

Referring to fig. 4, on the basis of the technical solution of the first embodiment, the liquid storage tank for formaldehyde production further includes a gas pressure sensor 23 and an electric controller 24, the gas pressure sensor 23 is installed in the output buffer tank, and the gas pressure sensor 23 and the booster fan 11 are electrically connected to the electric controller 24 through a wire. The embodiment is suitable for the methanol tank with small volume, the methanol tank with small volume contains less methanol, and the amount of the volatilized methanol is less, so that the booster fan is not required to work all the time to continuously supply gas; on the one hand, the booster fan can be controlled to start and stop through the controller according to the air pressure in the tank detected by the air pressure sensor, intermittent gas conveying is achieved, on the other hand, the booster fan can be started and stopped at regular time, intermittent gas supply is achieved, and electric energy is saved. The gas pressure sensors are preferably gas pressure sensors produced by Ann electronic detection technology Limited in Henan, fibrate automated equipment Limited in Dongguan, Yijiajie electronic technology Limited in Shenzhen, Guanzhou compass sensor Limited and Nanli measurement and control equipment Limited in Dongguan. The electric appliance controller is preferably a controller produced by Yangzhou people's electric technology Co., Ltd, Tongyi electric technology Co., Ltd, Zhejiang arbor electric technology Co., Ltd, Tongling ze Mei electric technology Co., Ltd, Zhengzhou Wantai electric Co., Ltd, Anhui Beichen electric technology Co., Ltd, Zhejiang Shunjing electrified gas Co., Ltd, Wenzhou Kanjin electric Co., Ltd, Wanlang electric Co., Ltd, Henan province, and Huagui electric company Ltd.

Example two

Referring to fig. 5, on the basis of the technical scheme of the first embodiment, an air inlet pipe 21 of the air buffer tank is arranged below the tank body, an air outlet pipe 25 of the air buffer tank is arranged above the tank body opposite to the air inlet pipe, two air dust removing filter screens 26 are arranged in the tank body, the air dust removing filter screens 26 are fixed on the annular plate 27, air enters from the air inlet pipe and then enters the breather valve through the air outlet pipe after being filtered and dedusted by the two layers of dust removing filter screens, and dust removing and filtering of the air are realized. The air dust removing filter screen is preferably an air dust removing filter screen produced by Naematoloma Kaishiki, Yongan county Taike filter equipment manufacturing company, Jining future filter system company, Kunshan Haixing purification equipment company and Texas Zike purification equipment company.

Claims (2)

1. The utility model provides a reservoir is used in formaldehyde production, includes the tank that is used for storing methyl alcohol, its characterized in that: the top of the tank is provided with a ventilation transmission system (1), and the ventilation transmission system (1) comprises a booster fan (11), 2 flame arresters (13) connected in parallel, a breather valve (18), an output buffer tank (17) and an air buffer tank (19); two ends of the 2 flame arresters (13) are respectively connected with the L-shaped guide pipes (12) through flanges, the two L-shaped guide pipes (12) on the same side are welded with the tee joint (15), and the 4L-shaped guide pipes (12) are respectively provided with a control valve (16); a tee joint (15) at the air outlet end of a flame arrester (13) is communicated with an air inlet pipe of a booster fan (11) through a flange, the tee joint (15) at the air inlet end of the flame arrester (13) is communicated with an air outlet pipe (14) of an external transportation buffer tank (17) through a flange, an air inlet pipe of the external transportation buffer tank (17) is communicated with an air outlet pipe of a breather valve (18), an air inlet pipe of the breather valve (18) is communicated with an air guide pipe at the lower part of an air buffer tank (19), and a scavenging pipe of the breather valve (18) is communicated with a tank; an air inlet pipe (21) is arranged at the upper part of the air buffer tank (19), and a liquid discharge pipe for mounting a ball valve is arranged at the bottom of the air buffer tank.

2. A reservoir for use in the production of formaldehyde according to claim 1, wherein: and a bag type air filter (22) is arranged on the air inlet pipe (21).

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