PATENT CLAIM ANALYSIS

Application Number: 15752841
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["562", "600000"]

Abstract:
A method of continuously recovering (meth)acrylic acid is provided. The method of continuously recovering (meth)acrylic acid according to the present disclosure enables use of a natural circulation type of reboiler which does not require an operating part in a destructive distillation process of recovering (meth)acrylic acid from a (meth)acrylic acid waste liquid, and therefore, stable operation of the continuous process may be achieved while simplifying equipment configuration.

Claim (Index 1):
A method of continuously recovering (meth)acrylic acid from a (meth)acrylic acid waste liquid including (meth)acrylic acid, (meth)acrylic acid dimers, and high-boiling-point by-products,\n wherein the recovering of (meth)acrylic acid is performed in a destructive distillation system  500  including a distillation column including a (meth)acrylic acid waste liquid-receiving section  510  and a distillation section  520  at the top portion thereof, and a natural circulation type of reboiler  550  which is connected to the distillation column and heats the liquid discharged from the lower portion of the distillation column by passing the liquid through a plurality of heat exchanger tubes to supply the liquid to the (meth)acrylic acid waste liquid-receiving section  510  of the distillation column, and the destructive distillation system  500  is operated such that the maximum height of the (meth)acrylic acid waste liquid in the (meth)acrylic acid waste liquid-receiving section  510  corresponds to 85% or more of the height of the top end of the heat exchanger tube of the natural circulation type of reboiler  550 .

Metadata:
- Claim Count in Document: 7.0
- Percentile: 88.0
- Lexical Diversity: 1.56604
- Patent Class: 562.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15752815', '15118126', '11399470', '13702533', '10817955']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7284212299203243
- 35 USC 102 Novelty (BERT): 0.5091787512200688
- Combined Prediction Score: 0.7064969820502988
- Mean Citation Score: 225.495844
- Max Citation Score: 269.3097
- Similarity Product: 202.3767395266414

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test