CN112938207A

CN112938207A - Methanol storage tank for preventing methanol gas from being discharged

Info

Publication number: CN112938207A
Application number: CN202110257667.XA
Authority: CN
Inventors: 李美茹; 褚卓栋; 李秋玲
Original assignee: Langfang Normal University
Current assignee: Langfang Normal University
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-06-11

Abstract

The invention discloses a methanol storage tank for preventing methanol gas from being discharged, which comprises a methanol tank, wherein the top end of the methanol tank is provided with a gas outlet, the gas outlet is sequentially connected with a gas outlet pipe and an adsorption tank, and an adsorption medium is filled in the adsorption tank; the top end of the methanol tank is also provided with an air inlet and a feed inlet, and the bottom end of the methanol tank is provided with a discharge outlet; a one-way valve is arranged at the air inlet; the feeding hole is connected with a first quick connector through a feeding pipe, and a one-way valve is arranged in the first quick connector; the discharge port is connected with the material using end through a discharge pipe, and a discharge valve is arranged on the discharge pipe. The technical scheme of the invention adopts the adsorption device which has small volume, high efficiency and low cost to be connected with the storage tank, so as to effectively adsorb the overflowing gas in the methanol storage tank, and the one-way valves are arranged on the communicating pipes, so that the gas in the methanol storage tank is prevented from overflowing, and the environmental protection effect and the safety performance are ensured.

Description

Methanol storage tank for preventing methanol gas from being discharged

Technical Field

The invention relates to the technical field of chemical production, in particular to a methanol storage tank for preventing methanol gas from being discharged.

Background

Methanol is a basic organic chemical raw material and a high-quality fuel, and along with the further enhancement of economic development and environmental awareness, the methanol fuel is widely used as a clean energy source. In industrial production, methanol is mainly applied to the fields of fine chemical engineering, plastics and the like, is used for manufacturing various organic products such as methanol, acetic acid, methyl chloride, methyl amine, dimethyl sulfate and the like, and is also one of important raw materials of pesticides and medicines.

Methanol needs to be injected into the tank body in the processes of storage, transportation and use, the injection port is not too large in order to prevent the methanol from volatilizing, but in order to accelerate the injection speed, a single opening is also needed on the top of the tank so as to keep the pressure inside the tank body consistent with the external pressure, but because the methanol is a volatile substance and is also volatile in a normal temperature environment, the top opening can cause the methanol gas to overflow in the injection process, and the two effects are generated: firstly, methanol has certain toxicity, influences the biggest to human nervous system and blood system, and it all can produce the toxic reaction through alimentary canal, respiratory tract or skin ingestion, and methanol gas can harm people's respiratory mucosa and eyesight, and acute poisoning symptom has: headache, nausea, stomach ache, tiredness, blurred vision to blindness, and then dyspnea, which finally leads to paralysis of the respiratory center and death; secondly, the direct discharge causes environmental pollution. Thirdly, the accumulation of a large amount of methanol gas can cause fire, explosion and other potential safety accidents, so that the national relevant regulations clearly stipulate that: the mass concentration of methanol in the discharged gas should be lower than 50mg/m³。

However, only two methods are available in the market for treating the rest mixed waste gas containing methanol discharged in chemical production by taking methanol as a raw material, wherein one method is oxygen removal water washing, and the other method is process water washing. In the first method, a deoxygenated water absorption tower, a deoxygenated water cooler and a draught fan are required; the second method uses a draught fan and a process water absorption tower. The methods are all that methanol is dissolved in deoxygenated water or water, a large-sized tank body is needed, the equipment occupies large space for storing and transporting methanol fuel, the storage and the transportation are not facilitated, and the manufacturing cost and the cost are not suitable for a small-sized storage tank.

Therefore, it is an urgent need to solve the problem of providing a methanol storage tank with a simple structure and low cost that can prevent the discharge of methanol gas.

Disclosure of Invention

In view of the above, the present invention provides a methanol storage tank for preventing methanol gas from being discharged, which uses a simple device combination to achieve the purpose of preventing methanol gas from being discharged well.

In order to achieve the purpose, the invention adopts the following technical scheme:

a methanol storage tank for preventing methanol gas emission comprises a methanol tank, wherein an air outlet is formed in the top end of the methanol tank, an air outlet pipe and an adsorption tank are sequentially connected to the air outlet, and an adsorption medium is filled in the adsorption tank;

the top end of the methanol tank is also provided with an air inlet and a feed inlet, and the bottom end of the methanol tank is provided with a discharge outlet;

a one-way valve is arranged at the air inlet;

the feeding hole is connected with a first quick connector through a feeding pipe, and a one-way valve is arranged in the first quick connector;

the discharge port is connected with the material using end through a discharge pipe, and a discharge valve is arranged on the discharge pipe.

Furthermore, the top end of the adsorption tank is connected with a flame arrester through an exhaust pipe.

The beneficial effects of the further technical scheme are as follows: the flame arrester is arranged at the top end to prevent the methanol gas from overflowing and burning and then the flame is transmitted into the tank body.

Furthermore, a methanol sensor is connected to the exhaust pipe in parallel, and the sensor can be connected with an alarm device.

The beneficial effects of the further technical scheme are as follows: after the medium in the adsorption box is adsorbed and saturated, the overflowed gas enters the pipeline to give an alarm in time, and the internal medium is replaced in time.

Further, the adsorption medium is small molecular inorganic salt, specifically calcium chloride.

The beneficial effects of the further technical scheme are as follows: the calcium chloride has good adsorption function, is cheap and easy to obtain, and importantly, the solid adsorption medium is convenient to replace and operate.

Further, the exhaust pipe and the flame arrester are connected through a second quick connection.

Furthermore, a third quick connector is arranged on the air outlet pipe.

The beneficial effects of the further technical scheme are as follows: the quick connector can be conveniently replaced or disassembled, and is convenient to install and maintain.

According to the technical scheme, compared with the prior art, the invention discloses the methanol storage tank for preventing the emission of methanol gas, and the methanol storage tank has the following beneficial effects:

the technical scheme of the invention adopts the adsorption device which has small volume, high efficiency and low cost to be connected with the storage tank, so as to effectively adsorb the overflowing gas in the methanol storage tank, and the one-way valves are arranged on the communicating pipes, so that the gas in the methanol storage tank is prevented from overflowing, and the environmental protection effect and the safety performance are ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is an overall structural diagram of a methanol storage tank for preventing methanol gas from being discharged according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in the attached figure 1, the methanol storage tank for preventing the emission of methanol gas comprises a methanol tank 1, wherein a gas outlet 2 is arranged at the top end of the methanol tank 1, the gas outlet 2 is sequentially connected with a gas outlet pipe 3 and an adsorption tank 4, and an adsorption medium calcium chloride is filled in the adsorption tank 4;

the top end of the methanol tank 1 is also provided with an air inlet 5 and a feed inlet 6, and the bottom end is provided with a discharge outlet 7;

a one-way valve 51 is arranged at the air inlet 5;

the feed inlet 6 is connected with a first quick connector 62 through a feed pipe 61, and a one-way valve 63 is arranged in the first quick connector 62;

the discharge port 7 is connected with a material using end through a discharge pipe 71, and a discharge valve 72 is arranged on the discharge pipe 71;

the top end of the adsorption box 4 is connected with a flame arrester 8 through an exhaust pipe 41 and a second quick connector 42, and the exhaust pipe 41 is connected with a methanol sensor 9 in parallel;

and a third quick connector 31 is arranged on the air outlet pipe 3.

The principle of the technical scheme is as follows: when methanol is filled, the filling pipe is connected through the first quick connector 62, the one-way valve 63 is arranged in the first quick connector 62, so that the methanol cannot flow backwards during the methanol filling process, in order to keep the air pressure balance in the tank body, the air in the tank can be discharged from the air outlet 2, the air enters the adsorption tank 4 through the air outlet 2 and the air outlet pipe 3 and is absorbed by the adsorption medium, and the clean air passing through the adsorption medium is discharged to the atmosphere from 41, 42 and 8. After the adsorption medium reaches saturation, methanol overflows from the exhaust pipe 41 through the adsorption tank, and the methanol sensor 9 connected with the exhaust pipe 41 in parallel gives an alarm in time to remind a worker to replace the adsorption medium. When using the internal methanol of jar, methanol is discharged through discharging pipe 71 by discharge gate 7, and in order to keep jar internal atmospheric pressure balanced, the external air is internal by air inlet 5 entering jar, and the check valve 51 of air inlet 5 department has also avoided the methanol gas excessive, and the spark arrester 8 that shows of the figure prevents that the external open fire from arousing the safety device of methanol burning in the storage tank when methanol steam has the seepage.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. a methanol storage tank preventing methanol gas discharge, comprising a methanol tank, the top of the methanol tank is provided with an air outlet, it is characterized in that, the air outlet is connected with an air outlet pipe and an adsorption box successively, and the adsorption box is filled with With adsorption medium;

The top of the methanol tank is also provided with an air inlet and a feed port, and the bottom end is provided with a discharge port;

A one-way valve is provided at the air inlet;

The feed port is connected with a first quick connection through a feed pipe, and a check valve is arranged in the first quick connection;

The discharge port is connected to the material end through a discharge pipe, and a discharge valve is arranged on the discharge pipe.

2 . The methanol storage tank for preventing methanol gas discharge according to claim 1 , wherein the top of the adsorption box is connected with a flame arrester through an exhaust pipe. 3 .

3 . The methanol storage tank for preventing methanol gas discharge according to claim 2 , wherein a methanol sensor is connected in parallel on the exhaust pipe. 4 .

4 . The methanol storage tank for preventing methanol gas discharge according to claim 1 , wherein the adsorption medium is a small molecule inorganic salt, specifically calcium chloride. 5 .

5 . The methanol storage tank for preventing methanol gas discharge according to claim 2 , wherein a second quick connection is used between the exhaust pipe and the flame arrester. 6 .

6 . The methanol storage tank for preventing methanol gas discharge according to claim 1 , wherein the gas outlet pipe is provided with a third quick connection. 7 .