Import Matplotlibpyplot As Plt Import Numpy As Np From Matplotlibpatches Import Rectangle Circle

import matplotlib.pyplot as plt import numpy as np from matplotlib.patches import Rectangle, Circle, FancyBbox import matplotlib.patches as mpatches def draw_demulsifier_diagram(): """Create a visualization of demulsifier separating water and salt from crude oil""" # Set up the figure fig, (ax1, ax2) = plt.subplots(1, 2, figsize=(14, 8)) fig.suptitle('Role of Demulsifiers in Crude Oil Separation Process', fontsize=16, fontweight='bold', y=0.98) # Colors oil_color = '#8B7355' # Brown for crude oil water_color = '#1E90FF' # Dodger blue for water salt_color = '#F0F0F0' # Light gray for salt demulsifier_color = '#FF6B6B' # Coral red for demulsifier # ========== LEFT PANEL: Before Demulsifier ========== ax1.set_title('Before Demulsifier Addition', fontsize=14, fontweight='bold', pad=20) ax1.set_xlim(0, 10) ax1.set_ylim(0, 10) ax1.set_aspect('equal') ax1.axis('off') # Draw the oil container container = Rectangle((1, 1), 8, 7, linewidth=2, edgecolor='black', facecolor='none') ax1.add_patch(container) # Draw emulsion mixture emulsion_height = 6 emulsion = Rectangle((1, 2), 8, emulsion_height, linewidth=0, edgecolor='none', facecolor=oil_color, alpha=0.3) ax1.add_patch(emulsion) # Draw water droplets (dispersed phase) np.random.seed(42) for _ in range(30): x = np.random.uniform(1.5, 8.5) y = np.random.uniform(2.5, 7.5) radius = np.random.uniform(0.1, 0.3) droplet = Circle((x, y), radius, facecolor=water_color, edgecolor='darkblue', alpha=0.7) ax1.add_patch(droplet) # Add salt crystals inside some water droplets if np.random.random() > 0.7: salt_size = radius * 0.5 salt = Rectangle((x - salt_size/2, y - salt_size/2), salt_size, salt_size, facecolor=salt_color, edgecolor='gray', linewidth=1) ax1.add_patch(salt) # Add labels ax1.text(5, 8.5, 'Emulsion: Water-in-Oil', ha='center', fontsize=12, fontweight='bold') ax1.text(2.5, 1.5, 'Stable mixture\nWater droplets dispersed in oil', ha='center', fontsize=10, style='italic') # Add legend for left panel left_legend_elements = [ mpatches.Patch(color=oil_color, alpha=0.3, label='Crude Oil'), mpatches.Patch(color=water_color, alpha=0.7, label='Water Droplets'), mpatches.Patch(color=salt_color, label='Salt Crystals'), ] ax1.legend(handles=left_legend_elements, loc='lower center', bbox_to_anchor=(0.5, -0.05)) # ========== RIGHT PANEL: After Demulsifier ========== ax2.set_title('After Demulsifier Addition', fontsize=14, fontweight='bold', pad=20) ax2.set_xlim(0, 10) ax2.set_ylim(0, 10) ax2.set_aspect('equal') ax2.axis('off') # Draw the oil container container2 = Rectangle((1, 1), 8, 7, linewidth=2, edgecolor='black', facecolor='none') ax2.add_patch(container2) # Draw separated layers water_layer = Rectangle((1, 1), 8, 2, linewidth=0, facecolor=water_color, alpha=0.8) oil_layer = Rectangle((1, 3), 8, 4, linewidth=0, facecolor=oil_color, alpha=0.6) interface = Rectangle((1, 3), 8, 0.1, linewidth=0, facecolor='black', alpha=0.3) ax2.add_patch(water_layer) ax2.add_patch(oil_layer) ax2.add_patch(interface) # Draw salt sediment at bottom salt_layer = Rectangle((1, 1), 8, 0.3, linewidth=0, facecolor=salt_color, edgecolor='gray') ax2.add_patch(salt_layer) # Draw demulsifier molecules at interface for i in range(8): x = 1.5 + i * 1 # Demulsifier molecule (simplified as small circles at interface) demuls = Circle((x, 3), 0.15, facecolor=demulsifier_color, edgecolor='darkred', linewidth=1) ax2.add_patch(demuls) # Add arrows showing demulsifier action ax2.arrow(5, 9, 0, -2, head_width=0.3, head_length=0.3, fc=demulsifier_color, ec=demulsifier_color, linewidth=2) ax2.text(5.5, 8.5, 'Demulsifier', color=demulsifier_color, fontsize=11, fontweight='bold') # Add labels for layers ax2.text(5, 5.5, 'Clean Crude Oil', ha='center', fontsize=11, fontweight='bold', color='white') ax2.text(5, 2.0, 'Separated Water', ha='center', fontsize=11, fontweight='bold', color='white') ax2.text(5, 1.15, 'Salt Sediment', ha='center', fontsize=10, fontweight='bold', color='black') # Add interface label ax2.text(5, 3.2, 'Interface with Demulsifiers', ha='center', fontsize=9, style='italic', color=demulsifier_color) # Add legend for right panel right_legend_elements = [ mpatches.Patch(color=oil_color, alpha=0.6, label='Separated Oil'), mpatches.Patch(color=water_color, alpha=0.8, label='Separated Water'), mpatches.Patch(color=salt_color, label='Salt Sediment'), mpatches.Patch(color=demulsifier_color, label='Demulsifier Molecules'), ] ax2.legend(handles=right_legend_elements, loc='lower center', bbox_to_anchor=(0.5, -0.05)) # ========== Add explanatory text ========== explanation_text = ( "Demulsifiers are surface-active chemicals that break water-in-oil emulsions by:\n" "1. Migrating to the oil-water interface\n" "2. Displacing natural emulsifiers\n" "3. Promoting droplet coalescence\n" "4. Allowing gravity separation of water and salt" ) fig.text(0.5, 0.02, explanation_text, ha='center', fontsize=11, bbox=dict(boxstyle="round,pad=0.5", facecolor='lightyellow', alpha=0.8)) plt.tight_layout() return fig, ax1, ax2 # Generate and display the diagram fig, ax1, ax2 = draw_demulsifier_diagram() # Save high-quality image plt.savefig('demulsifier_process.png', dpi=300, bbox_inches='tight', facecolor='white') plt.show() print("Diagram has been created and saved as 'demulsifier_process.png'") print("\nKey components shown:") print("1. Left panel: Water-in-oil emulsion with dispersed water droplets containing salt") print("2. Right panel: Separated layers after demulsifier addition") print("3. Demulsifier molecules at the interface facilitating separation")

21.12.2025 14:35