According to the demand of ethylene product present situation, the use of methanol to olefins technology can produce ethylene; On the other hand, methanol to olefins higher technical maturity, in domestic has also have successful experience in industrial production, so choose methanol to olefins as processing plan。 At present, most of methanol to olefins reactor in the form of fluidized bed and regenerator。 Catalyst adopts the SAPO-34 series, molecular sieve catalyst。 Methanol to olefins device consists of feeding methanol evaporation section, MTO reaction regeneration system, product condensation and dehydration, oxide and impurity removal unit。

Ethylene market in China is quite promising, the current domestic self supply rate is only about 50%, which means we have to import a lot of oil to meet our daily needs。 In response to oil price shocks, we find that methanol can replace the oil well。 At the same time using methanol to produce ethylene is of great help to alleviate the oil crisis, so it is becoming a new method of ethylene。

1。Duty origin

Its goal is carries on a time of chemical design attempt using the chemical engineering correlation knowledge, and is the methanol industrialization production; the production installment design provides the reference。 As the simulation design, this article has abbreviated the chemical design partial contents, like craft pipeline design, explosion-proof electricity design, powerdesign and factory whole arrangement and so on。

2。Design standard

This design has referred to below the national standard and the stipulation。

3。Principle of design and main design standard

Principle:

a Safe: In the chemical production the massive matter are flammable, explosiveor are virulent。 Therefore, the design must fully consider each kind is obvious and the latent danger, the guarantee production personnel'shealth and the security。

b Ease of operation: While determines each production process and equipment, but also must reasonably determine the operating condition。 Because of it to the production process and the equipment establishment and it’s the function display and the control plan determination, all has the direct relations。

c Investment province: Namely the request economically uses the equipment investment, the construction invests, the public project investment and the manpower cost。

d Is advantageous for the installment: The factory arrangement should satisfy the construction and the installment work request。 Specially should consider the large-scale equipment the hoisting, in the factory the path pavement structure and the load standard and so on should satisfy the work the request。

e。 environmental protection: chemical production will produce a large amount of waste gas waste gas and other damage to the environment。 Therefore, chemical design must fully take into account all kinds of environmental factors, make good treatment of the three wastes and ensure the health safety and environment of the workers。

(1) Stable feed temperature at 200 ºC。

(2) the operating temperature is 450 ºC。

(3) the operating pressure range is 0。1 MPa to 0。3 MPa。

(4) the dense-phase area operating gas velocity of 1。0 m/s, the separation of the operating gas velocity of 0。6 m/s。

(5) the quality of the methanol airspeed WHSV for 2h -1。

(6) SAPO - 34 molecular sieve catalyst

(7) and angry at the top of the pressure of 1。22 MPa, regeneration temperature is 650 ºC。

(8) Type of reactor: fluidized bed reactor

(9) Tower type: plate tower

(10) Feed water alcohol mass ratio: 0。2: 1

目录

1 概述 1

1。1 乙烯 1

1。1。1 乙烯简介