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  <xs:element id="wlkp_RelatedPartyTransactionsLongtermDebtTextBlock" abstract="false" name="RelatedPartyTransactionsLongtermDebtTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="wlkp_FeedstockPurchasedMember" abstract="true" name="FeedstockPurchasedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_SeniorUnsecuredRevolvingCreditFacilityMember" abstract="true" name="SeniorUnsecuredRevolvingCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_CommonUnitsMember" abstract="true" name="CommonUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_IncentiveDistributionRightsTargetDistributionPerUnitRequiringMarginalPercentageDistributiontoIDRHolders" abstract="false" name="IncentiveDistributionRightsTargetDistributionPerUnitRequiringMarginalPercentageDistributiontoIDRHolders" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="wlkp_LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersAdditionalOwnershipInterest" abstract="false" name="LimitedLiabilityCompanyLLCorLimitedPartnershipLPMembersorLimitedPartnersAdditionalOwnershipInterest" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="wlkp_Siteleaseagreementsterminyears" abstract="false" name="Siteleaseagreementsterminyears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="wlkp_UnitHoldersMember" abstract="true" name="UnitHoldersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_CommonAndSubordinatedUnitsMember" abstract="true" name="CommonAndSubordinatedUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_WestlakeChemicalOpCoGPLLCMember" abstract="true" name="WestlakeChemicalOpCoGPLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_IDRHoldersMember" abstract="true" name="IDRHoldersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_IncentiveDistributionSubsequentDistributionAmount" abstract="false" name="IncentiveDistributionSubsequentDistributionAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_RelatedPartyTransactionsLongtermDebtTableTextBlock" abstract="false" name="RelatedPartyTransactionsLongtermDebtTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="wlkp_EarningsPerUnitBasicAndDilutedOtherDisclosureAbstract" abstract="true" name="EarningsPerUnitBasicAndDilutedOtherDisclosureAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wlkp_InvestmentswithWestlakeundertheInvestmentManagementAgreement" abstract="false" name="InvestmentswithWestlakeundertheInvestmentManagementAgreement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_CashDistributionTrancheThreeMember" abstract="true" name="CashDistributionTrancheThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_CashDistributionTrancheOneMember" abstract="true" name="CashDistributionTrancheOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_IncentiveDistributionMarginalPercentageInterestinDistributions" abstract="false" name="IncentiveDistributionMarginalPercentageInterestinDistributions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="wlkp_PartnersUnitsMaximumAggregateOfferingAmountATM" abstract="false" name="PartnersUnitsMaximumAggregateOfferingAmountATM" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_PartnersCapitalAccountUnitsSoldtoRelatedParty" abstract="false" name="PartnersCapitalAccountUnitsSoldtoRelatedParty" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="wlkp_ReceivablesunderInvestmentManagementAgreementswithRelatedPartiesCurrent" abstract="false" name="ReceivablesunderInvestmentManagementAgreementswithRelatedPartiesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_AccruedMaintenanceCostsCurrent" abstract="false" name="AccruedMaintenanceCostsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_ScheduleofDistributionsTableTextBlock" abstract="false" name="ScheduleofDistributionsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="wlkp_SiteleaseagreementsOpCoannualobligationtoWLK" abstract="false" name="SiteleaseagreementsOpCoannualobligationtoWLK" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_RelatedPartyTransactionPurchasesFromRelatedPartyCapitalizedAsAssets" abstract="false" name="RelatedPartyTransactionPurchasesFromRelatedPartyCapitalizedAsAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_ScheduleOfOtherAssetsTable" abstract="true" name="ScheduleOfOtherAssetsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="wlkp_UnidentifiedThirdPartiesMember" abstract="true" name="UnidentifiedThirdPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_MLPRevolverMember" abstract="true" name="MLPRevolverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_InterestearnedrelatedtotheIMA" abstract="false" name="InterestearnedrelatedtotheIMA" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_Siteleaseagreementnumber" abstract="false" name="Siteleaseagreementnumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="wlkp_MaturitiesofinvestmentswithWestlakeundertheInvestmentManagementAgreement" abstract="false" name="MaturitiesofinvestmentswithWestlakeundertheInvestmentManagementAgreement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_BuyerDeficiencyFee" abstract="false" name="BuyerDeficiencyFee" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_IMAPartnershipEarnedAmountAddedToMarketRateBasisPoints" abstract="false" name="IMAPartnershipEarnedAmountAddedToMarketRateBasisPoints" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wlkp_NumberofProductionFacilities" abstract="false" name="NumberofProductionFacilities" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="wlkp_AccruedinterestincludedinreceivableunderIMA" abstract="false" name="AccruedinterestincludedinreceivableunderIMA" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_WestlakeChemicalOpCoLPMember" abstract="true" name="WestlakeChemicalOpCoLPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_ShortfallFees" abstract="false" name="ShortfallFees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wlkp_ParentCompanyAndSubsidiariesExcludingReportingEntityAndSubsidiariesMember" abstract="true" name="ParentCompanyAndSubsidiariesExcludingReportingEntityAndSubsidiariesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wlkp_OtherServiceChargesMember" abstract="true" name="OtherServiceChargesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
