PRO II 计算混合物潜热 [复制链接]

hswang2 · 发表于 1970-1-1 08:00:00

请教各位hysys/PRO II的牛人
可否帮忙将这个hysys计算混合物潜热的图,转换成 PRO\II?

昨天 23:22 上传
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以下用hysys计算潜热步骤是我从某网站载下来的,不太了解,请大大帮忙:

STEP 1 : Define fluid in the vessel is at maximum Operating pressure (P0) & operating temperature (T0) prior to fire start.

HYSYS : Stream 1 is at P0 & T0. Flash stream 1 in VESSEL V-100 and associate vapor and liquid outlet are stream 2 & 3.

STEP 2a : Determine liquid volume (Vl0) and vapor volume (Vv0) which will be defined by the physical vessel dimension and piping volume. Calculate liquid volume (Vl0) and vapor volume (Vv0) consider liquid level in the vessel is at maximum liquid level (L0) and piping vapor & liquid volume.

STEP 2b : Adjust the inventory (vapor mass and liquid mass) in the vessel until you achieve the vapor volume (Vv0) and liquid volume (Vl0). 请问这个ADJ-1,ADJ-2在apsen plus要用甚么表示?

HYSYS : Copy stream 2 to stream 4. Copy stream 3 to stream 5. Mix stream 4 & 5 into stream 6. ADJUST stream 4 Mass Flow to obtain Stream 6 Vapor Actual Volumetric Flow to Vv0. ADJUST stream 5 Mass Flow to obtain Stream 6 Liquid Actual
Volumetric Flow to Vl0.请问为何要将stream 4 的 mass flow 弄得跟 stream 6的 Vv0 一样?

STEP 3 : Bring the the system to Relieving pressure (Pr0=121% of Pset). By maintaining system volume at V0 (=Vv0+Vl0). The system is at relieving condition. The temperature at this point is Tr0.

HYSYS : Define a new stream 7 with a BALANCE unit (mole balance only). Set Stream 7 pressure at Pr0. ADJUST stream 7 temperature until Overall Actual Volumetric Flow to V0 (=Vv0+Vl0).

STEP 4 : Next step is further input heat (Q1) to achieve 1-2 deg C above Tr0 but maintain pressure at Pr0. Normally the total volume (V1) at this point potentially higher than V0.

HYSYS : Flash stream 7 in VESSEL V-101 into Vapor outlet, stream 6 and Liquid Outlet stream 11. Attach a heat stream (Q-100) into V-101. SET stream 8 temperature 1-2 degC above stream 7.
请高人指点stream 7 跟stream 6与stream 11混合的理由是甚麽?

STEP 5 : Part of the vapor (m1) from the system shall be removed in order to bring the system volume (V1) back to V0 as the physical volume maintain.

HYSYS : SPLIT stream 8 into stream 9 and 10. Mix stream 9 & stream 11 form stream 12. ADJUST stream 9 Mass Flow (m1) to obtain Stream 12 Overall Actual Volumetric Flow to V0.
这边也看不太懂,stream 9 mass flow 为何要弄成 stream 12 mass flow V0 ?

STEP 6 : Above has shown that m1 (stream 9) will be removed with the heat input of Q1 (Q-100) and maintaining at set pressure. Heat input is used to heat the vapor and liquid from Tro to Tr1 (sensible heat) and vaporized m1 of liquid (Latent Heat of Vaporization).

Latent Heat of Vaporization,
Hvap = [Q1 - m8 x dT x (Cp7+Cp8)/2 - m11 x dT x (Cp7+Cp8)/2]/m9

where
m8 - Mass of stream 8 (Vapor)
m9 - Mass of stream 9 (Removed Vapor)
m11 - Mass of stream 11 (Liquid)
Cp7 - Stream 7 (Mixed) specific heat capacity
Cp8 - Stream 8 (Vapor) specific heat capacity
Cp11 - Stream 11 (Liquid) specific heat capacity
dT = Tr0 - Tr1
STEP 7 : Determine Fire heat load input (Qc1) from API equation (Q=43.2A^0.82).
STEP 8 : Determine PSV mass flow rate with M1= m1 x (Qc1/ Q1)
STEP 9 : Calculate the Relief area (A1) base on M1 and fluid properties from stream 9.
STEP 10 : Repeat (4) - (9) until you get the maximum Relief area (Amax).

感谢不尽

chenhaijunsjy · 发表于 1970-1-1 08:00:00

好问题等到高手朋友给出答应!{:1106_362:}

胡杨 · 发表于 1970-1-1 08:00:00

不懂啊，新手帮顶，期待高手。。{:1106_362:}

tuyuefr · 发表于 1970-1-1 08:00:00

我下不了你的附件，而且不是特别明白你的问题

loveryman · 发表于 1970-1-1 08:00:00

你到底是想把hysys搞成proii还是plus？

[求助] PRO II 计算混合物潜热 [复制链接]

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